Programs the V-source protection value, which sets the maximum voltage level the SourceMeter can output. Available settings depend on the model, and the power-on default is NONE.

:SOUR:VOLT:PROT 20

Sets the I-source amplitude. The value is specified in amps.

Sets the source output level for the voltage source. The manual describes it as the V-source amplitude, in volts.

:SOURce:VOLTage:LEVel <n>
:SOUR:VOLT:LEV 10

Selects the source function. The allowed values are voltage or current.

Sets the source delay for the selected source function. The command is listed among source memory saved configurations.

Sets or reports the source auto delay state for source channel 1. The manual lists it as a saved configuration command for sweep operation.

Selects the source function shape for the 2430 pulse function. The manual lists this command as a saved configuration item.

Sets the source pulse delay for the selected source. This command is listed as the remote command for 2430 pulse delay in the source memory saved configurations table.

Sets the 2430 pulse width.

Sets the sweep direction. UP sweeps from start to stop, and DOWn sweeps from stop to start.

Save setup in memory at the specified memory location.

:SOURce:SAVE <n>

Queries the auto clear mode for the selected source. The mode can be ALWays or TCOunt.

Queries the state of auto clear for the selected source. For Model 2430 Pulse Mode, auto clear is always enabled and the command is ignored.

Queries the I-Source mode. The mode selects fixed, sweep, or list current-source operation.

Queries whether autoranging is enabled for the I-Source current range. The command returns the current auto-ranging state.

Queries the selected I-Source range setting. The source range is part of the current-source configuration under :SOURce[:CURRent].

Queries the present current source level. The level is part of the I-Source immediate amplitude setting.

Queries the state of auto settling time for the source delay. For the Model 2430 Pulse Mode, source delay is not used and this command is ignored.

Queries the source settling time. For Model 2430 Pulse Mode, source delay is not used and the command is ignored.

Queries the output mode for the source function. Model 2430 only; the available modes are DC and PULSE.

Queries the selected source function mode.

Queries the center point for the current sweep configuration.

Queries the current sweep span. The span is a source current setting under the CURRent subsystem.

Specifies the start level for the I-sweep. The corresponding query returns the start level for current sweep.

Sets the current sweep step value. The query form returns the step value for the current sweep.

Queries the stop level for the current sweep.

Queries the current scaling factor for the triggered current level.

Sets the current level when triggered for the selected source path. The level value is specified as a numeric amplitude parameter.

Queries the triggered current level state in the current source path. The slice lists the associated setter as :STATe <b>, which enables or disables current scaling factor, and the query as :STATe? to query that state.

Queries the current level set for triggered operation in the current source path. The level is the triggered current amplitude.

Queries the V-source mode. The mode can be FIXed, SWEep, or LIST.

Queries whether voltage autoranging is enabled or disabled. This command is under the source voltage path and is active when the V source is active.

Queries the V-source range setting. The command is part of the :SOURce[1]:VOLTage path.

Queries the first sweep point soak time.

Queries the center point for the voltage sweep. The command is part of the :SOURce[1]:VOLTage sweep setup branch.

Returns whether the voltage protection limit has been detected. It yields 1 for yes and 0 for no.

Sets or queries the voltage protection level for the selected source. The command defines the output voltage limit path under :VOLTage:PROTection.

Queries the voltage span setting for the selected source voltage path. The span is used to define the sweep range.

Queries the start level for the voltage sweep.

Queries the voltage sweep step value.

Queries the stop level for the voltage sweep. The value is the present V-sweep stop point.

Queries the voltage scaling factor for the triggered voltage source level. The scaling factor applies to the triggered voltage level path under :SOURce[1]:VOLTage[:LEVel]:TRIGgered.

Sets the triggered voltage level for the source voltage function. This command is part of the voltage source level subsystem and uses the triggered level path.

Returns the voltage level set for the triggered source level.

Queries the triggered voltage amplitude for the selected source. The command is part of the voltage source level hierarchy and corresponds to the triggered amplitude setting.

Queries the specified voltage level for source 1. The command returns the present V-source level in volts.

Queries the start point for the current source list sweep. The command belongs to the :LIST:CURRent subtree and returns the configured list sweep start point.

Queries the I-Source list. The command is part of the LIST source mode under :SOURce[1]:LIST.

Queries the start point for the active LIST source voltage sequence.

Queries the V-Source list in LIST source mode.

Configure Source Memory Sweep.

Queries the number of sweep points in Source Memory sweep mode.

Recalls settings from a source memory location.

Configures the start location for Source Memory Sweep.

Configure the start location for Source Memory Sweep.

Queries the abort-on-compliance state for source sweep mode. The setting controls whether sweep aborts occur never, early, or late on compliance.

Queries the sweep direction for the source sweep mode. The sweep direction is from start to stop (UP) or from stop to start (DOWN).

Queries the number of sweep points in the source sweep setup. The count is documented in the source sweep command summary.

Queries the source ranging mode used for sweep source mode.

Queries the sweep spacing type for source sweep mode. The spacing can be linear or logarithmic.

Queries the pulse delay for Pulse Mode on Source 1. The delay is part of the :PULSe configuration and is measured in seconds.

Queries the configured pulse width for Pulse Mode on Source 1. The width is set with :SOURce[1]:PULSe:WIDTh <n> and is documented as 0.00015 to 0.005 seconds.

Turns the source output off. The output turns off after all programmed source-measure operations are completed and the instrument returns to the idle state; if auto output-off is enabled, it turns off automatically.

Controls auto output-off for the source. When enabled, an INITiate, READ?, or MEASure? starts source-measure operation and the output turns on at the beginning of each SDM cycle, then turns off after each measurement is completed.

Selects the auto mode for source auto output-off. The ALWAYS option turns the source off with each SDM cycle, and TCOunt turns it off after the trigger count expires.

Selects the DC sourcing mode for the specified source. The source can be set to fixed, list, or sweep mode.

Selects the source mode. VOLTage uses the V-Source, CURRent uses the I-Source, and MEMory enables memory sweep mode.

Selects the DC sourcing mode for the specified source. The source can be set to fixed, list, or sweep mode.

Selects the source current range for the I-Source. The range can be set numerically or with the keywords DEFault, MINimum, MAXimum, UP, or DOWN.

Manually selects the V-Source range by specifying an approximate source level; the instrument chooses the lowest range that can accommodate that level. The query form can be used to read the current, default, minimum, or maximum range.

Enables or disables auto range for the specified current source. When enabled, the instrument automatically selects the most sensitive range for the source level; when disabled, it uses the currently selected range.

Enables or disables auto range for the specified voltage source. When enabled, the instrument automatically selects the most sensitive range for the source level; when disabled, it uses the current range.

Sets the fixed source amplitude immediately. The allowable range depends on whether the source is current or voltage and on the instrument model.

Sets the fixed voltage source amplitude immediately. The accepted range depends on the instrument model; DEFault, MINimum, and MAXimum are also supported.

Sets the fixed source amplitude used when triggered. The value depends on the source type and model, and may also be specified with DEFault, MINimum, or MAXimum.

Sets the fixed source amplitude to be used when triggered. The command is not valid for list or sweep mode.

Sets the voltage limit for the V-Source.

Selects the source ranging mode for sweeps. BEST selects a single fixed source range for the entire sweep, AUTO selects the most sensitive range for each sweep level, and FIXed holds the present range when the sweep starts.

Selects the scale for the sweep.

Specifies the start current level for a current sweep.

Sets the stop current level for a current sweep. The allowed range depends on the instrument model; the value may also be specified with MINimum, MAXimum, or DEFault.

Specify the start voltage level for a voltage sweep.

Specifies the stop voltage level for a voltage sweep.

Specifies the center point of the current sweep. The value range depends on the instrument model and source mode.

Specifies the span of the current sweep.

Specifies the center point of the voltage sweep.

Specifies the span of the voltage sweep.

Specifies the step size for a current sweep. The manual also lists the corresponding voltage-sweep form of the command.

Specifies the step size for a voltage sweep.

Sets the total number of source-measure points in a sweep. For linear sweeps the points are equally spaced between start and stop levels; for logarithmic sweeps they are equally spaced on a logarithmic scale.

:SOURce[1]:SWEep:POINts <n>

Controls abort on compliance during a sweep. The sweep can be aborted never, at the start of the SDM cycle, or at the end of the SDM cycle.

Sets the direction of a sweep. UP runs the sweep from start to stop, and DOWn runs it from stop to start.

Defines the I-Source list for list sourcing mode. The list can contain up to 100 source values, and the instrument will sequentially source each current value when operation is started.

:SOURce[1]:LIST:CURRent 0.01, 0.13, 0.005

Defines the V-source list for list sourcing mode. The list can contain up to 100 source values and is sourced sequentially during operation, with a measurement performed at each level.

:SOURce[1]:LIST:CURRent 0.01, 0.13, 0.005

Adds one or more values to an existing current source list. Up to 100 values can be appended at a time, and multiple appended lists can be used to build a list of up to 2500 points.

Determines the length of the specified current source list. The response message indicates the number of source values in the list.

Adds one or more values to an existing voltage source list. Up to 100 values can be appended at a time, and appended lists are added to the end of the list.

Queries the length of the specified voltage source list. The response message indicates the number of source values in the list.

Sets the starting point in the current list sweep. The start point is 1-based and must be less than or equal to the number of points in the sweep; the starting point is restored when the sweep direction is changed back to up.

Sets the starting point of the voltage list sweep. The start point is 1-based and must be less than or equal to the number of points in the sweep; the default is 1.

Saves the present instrument setup in the specified memory location. Up to 100 setups can be saved.

:SOURce[1]:MEMory:SAVE <NRf>

Specifies the number of sweep points to execute. For example, if setups are saved in memory locations 1 through 12, a 12-point sweep can be specified with this command.

Returns the SourceMeter to the setup stored at the specified memory location.

Selects the starting location for a Source Memory Sweep. The starting location is specified as a memory location number.

Sets the triggered current scaling factor. The same command is also documented for triggered voltage scaling factor on the related voltage path.

Sets the triggered scaling factor for the source level. The same command is documented for both current and voltage source levels.

Enable or disable current scaling for source memory sweeps.

Sets the multiple mode soak time. With SYST:RCMode set to MULTiple, it specifies how long the unit will sit after the first sweep point while autoranging to let a multiple SourceMeter configuration settle.

Enables or disables voltage scaling for source memory sweeps. It works only with source memory sweeps.

Selects the measure function. The function can be voltage or current.

Sets the current compliance for manual ohms measurements.

Sets the voltage compliance for manual ohms measurements.

Selects the manual current measurement range. The range value is specified as n = range.

Enables or disables auto-ranging for the current measurement range. The state argument selects ON or OFF.

Selects the manual ohms measurement range.

Selects the manual volts measure range.

Enables or disables auto volts range selection.

Enable or disable the filter. The manual notes that for the Model 2430 Pulse Mode, the filter cannot be enabled.

Sets the filter count used by the measurement averaging filter.

Selects the filter type for measurement averaging.

Sets the current integration rate for the specified sense function. It is the source-memory-saved configuration for current integration rate.

Sets the concurrent functions for the selected sense subsystem. It is listed as a source-memory-saved configuration mode.

Selects manual or auto ohms mode for resistance measurements.

Sets the resistance measurement integration rate by specifying the number of power line cycles. This command is listed as the remote command for resistance integration rate.

Enables or disables offset-compensated ohms for the selected sense function.

Sets the voltage integration rate (NPLC) for the selected sense function. This command is listed in the source memory saved configurations table.

Enables or disables current range holdoff.

Sets the current range holdoff delay in seconds.

Returns only the most recent reading from SENSe[1] data.

Queries the state of the specified measurement function. The instrument returns 1 if the function is on and 0 if it is off.

Selects measurement function(s) for Sense 1. The command accepts a function list or the ALL keyword to enable all functions when concurrent mode is enabled, or only ohms when concurrent mode is disabled.

Returns the list of measurement functions that are enabled. The command belongs to the SENSe[1]:FUNCtion subsystem.

Queries the synchronization status of measure and compliance range synchronization for current protection. The command is part of the current protection subtree under :SENSe[1]:CURRent[:DC].

Sets the auto-ranging lower limit for current measurement. The limit applies to the current range under :SENSe[1]:CURRent[:DC]:RANGe.:AUTO.

Queries the auto-ranging lower limit for the current measurement range. Returns the lower limit used by the current auto range setting.

Returns the current compliance range.

Queries the present upper measurement range for current in the selected DC current sense path. The range is selected by specifying the expected current reading.

Sets the lower limit for auto ranging on the voltage measurement range. The command belongs under the voltage range path and applies to DC voltage measurement configuration.

Queries the lower limit used for auto-ranging on the voltage measurement range. The command is part of the voltage range configuration path.

Returns the V compliance range.

Queries the selected voltage measurement range. The range is selected by specifying the expected voltage reading.

Sets or queries the resistance range holdoff delay in seconds.

Queries the resistance range holdoff delay. The delay is set under the resistance range holdoff command and is expressed in seconds.

Enable or disable current range holdoff for source memory sweeps.

Queries the current resistance range holdoff state.

Sets the lower limit for resistance auto ranging. The command belongs to the resistance range configuration subtree.

Queries the lower limit of the resistance range. This is part of the resistance range configuration commands.

Sets the upper limit for auto range in resistance measurement. The detailed parameter values are referenced in the command reference notes.

Queries the upper limit used for resistance auto-ranging.

Queries the present resistance measurement range upper setting. The command is part of the resistance range configuration path under :SENSe[:1]:RESistance:RANGe[:UPPer].

Queries range synchronization for voltage protection. The command is part of the voltage compliance/protection subsystem and reports whether measure and compliance range synchronization is enabled.

Specifies the digital filter count for voltage DC average filtering. The count is adjustable from 1 to 100, with a default of 10.

Queries the digital filter count for the voltage DC average filter path. The count is documented as a value from 1 to 100, with a default of 10 for the setter.

Specifies the digital filter type for voltage DC averaging. The filter type can be MOVing or REPeat.

Queries the digital filter type for the voltage DC average path. The filter type can be MOVing or REPeat.

Enables or disables the digital filter state for the voltage DC averaging function. The filter path is under :SENSe[1]:VOLTage[:DC]:AVERage.

Queries the digital filter state for the voltage DC average function. For Model 2430 Pulse Mode, filtering is not used and this command is ignored.

Enables or disables concurrent measurements. When enabled, the instrument can measure more than one selected function simultaneously; when disabled, only one measurement function can be enabled.

Specifies one or more measurement functions to be enabled when concurrent measurements are enabled. Each function in the list must be quoted and separated by commas.

[:SENSe[1]]:FUNCtion[:ON] <function list>
[:FUNCtion] "VOLTage", "CURRent"

Query functions that are enabled when concurrent measurements are enabled. Each function in the list must be enclosed in quotes and separated by commas.

:FUNCtion “VOLTage”, “CURRent”
:FUNCtion:OFF ‘VOLTage’, ‘CURRent’

Disables all measurement functions. If concurrent measurements are disabled, only the ohms function will be enabled by the related enable-all command; this command turns all functions off.

Queries the number of measurement functions that are disabled. The response indicates how many functions are currently off.

Queries the state of the specified measurement function. A returned response of "0" indicates the function is disabled, and "1" indicates it is enabled.

Enables all measurement functions. If concurrent measurements are enabled, amps, volts, and ohms are performed simultaneously; if concurrent measurements are disabled, only the ohms function is enabled.

Queries the number of measurement functions that are enabled or disabled. When sent as :ON:COUNt?, the response indicates the number of enabled functions; when sent as :OFF:COUNt?, the response indicates the number of disabled functions.

Queries the selected ohms measurement mode. The manual describes the related setter as selecting MANual or AUTO ohms mode.

Controls offset-compensated ohms measurement. A value of 1/ON enables offset compensation and 0/OFF disables it.

Queries the present current measurement range in DC mode. The returned value may also be requested as MINimum, MAXimum, or DEFault on this command family if supported by the instrument.

Selects the upper measurement range for current in DC mode. The value can be a numeric expected reading or the keywords UP, DOWN, DEFault, MINimum, or MAXimum.

Selects the resistance measurement range. The command accepts a numeric range value or the keywords DEFault, MINimum, MAXimum, UP, and DOWN.

Selects the resistance measurement range. The range can be set to a numeric expected reading, or to DEFault, MINimum, MAXimum, UP, or DOWN.

Returns the present measurement range for DC voltage. The response can be a numeric value or a range qualifier such as UP or DOWN, depending on the instrument model and selected range.

Selects the measurement range for the specified voltage DC sense function. The range can be chosen by expected reading or by the UP/DOWN keywords; MINimum, MAXimum, and DEFault are also accepted.

Controls auto ranging for amps on the current measurement function. When enabled, the instrument automatically goes to the most sensitive range; when disabled, it remains at the automatically selected range.

Sets the auto-ranging lower limit for the current measurement range. The lower limit must be less than or equal to the upper limit, and if the lower and upper limits are equal, auto ranging is effectively disabled.

Queries the auto ranging lower limit for current measurement. The lower limit is programmable and must be less than or equal to the upper limit.

Controls auto ranging for current measurements. With auto ranging enabled, the instrument automatically selects the most sensitive range for the measurement.

Controls auto ranging for ohms. When auto ranging is enabled, the instrument automatically goes to the most sensitive range for the measurement; when disabled, it remains at the automatically selected range.

Sets the auto-ranging lower limit for resistance measurements. The lower limit must be less than or equal to the upper limit.

Queries the auto range lower limit for ohms. Auto range lower limits are intended primarily for SYST:RCM MULT support, and the lower limit must be less than or equal to the upper limit.

Controls auto ranging for ohms. When enabled, the instrument automatically goes to the most sensitive range to perform the measurement; when disabled, it remains at the automatically selected range.

Controls auto ranging for volts. When auto ranging is enabled, the instrument automatically goes to the most sensitive range to perform the measurement; when disabled, it remains at the automatically selected range.

Sets the auto ranging lower limit for volts. The lower limit must be less than or equal to the upper limit, and if the lower limit equals the upper limit auto ranging is effectively disabled.

Queries the auto-ranging lower limit for voltage ranges. The lower limit is programmable and must be less than or equal to the upper limit.

Controls auto ranging for volts. When enabled, the instrument automatically goes to the most sensitive range to perform the measurement; disabling it leaves the instrument at the automatically selected range.

Queries the auto ranging upper limit for current in amps. Auto range upper limits are intended primarily for SYST:RCM MULT support.

Enables or disables current range holdoff. This feature is available only by remote and is used to speed up low-current measurements when sourcing voltage and measuring current.

Sets the current range holdoff delay. This delay is used with current range holdoff, a feature available only for source memory sweeps and remote control.

Queries the current range holdoff delay. This feature is available only for current range holdoff in source memory sweeps.

Queries the current range holdoff state.

Sets the auto ranging upper limit for resistance. This limit is intended primarily for SYST:RCM MULT support; when autoranging is disabled, any range above the limit can be programmed manually (ohms only).

Queries the auto-ranging upper limit for resistance. The upper limits are intended primarily for SYST:RCM MULT support; for resistance, the limit is in ohms and depends on the instrument model.

Queries the auto-ranging upper limit for volts. For voltage and current, the upper limit is controlled by the compliance range and is available only as a query.

Sets the current compliance limit for the selected sense function. The manual also lists corresponding voltage-compliance commands nearby, but this command is for current protection only.

Sets the current compliance limit. The allowed range depends on the instrument model, and the limit can also be set to DEFault, MINimum, or MAXimum.

Sets the voltage compliance limit. The allowable range depends on the instrument model, and the value may also be set to DEFault, MINimum, or MAXimum.

Sets the voltage compliance limit for the selected sense function. The allowable range and default/min/max values depend on the instrument model.

Controls current measure and compliance range sync. Turning it on makes the measurement range follow the compliance range setting when autoranging is off, and changing one setting automatically changes the other.

Returns whether the current source is in compliance. A returned value of 1 means the source is in compliance, and 0 means it is not in compliance.

Controls voltage measure and compliance range sync. Turning it on makes the measurement range follow the compliance range setting when autoranging is off; changing one setting automatically changes the other.

Queries whether the source is in voltage compliance. A returned value of "1" indicates compliance, and "0" indicates the source is not in compliance.

Sets the integration period (measurement speed) for current measurements in power-line cycles (PLC). The setting is global, so changing the speed for voltage, current, or resistance affects all measurement functions.

Sets the integration period (speed) for current measurements in power-line cycles. It is a global command, so setting the speed for one measurement function affects voltage and resistance as well.

Queries the programmed NPLC value for resistance measurements. The query also supports the qualifiers DEFault, MINimum, and MAXimum to return the corresponding default or limit value.

Sets the integration period (measurement speed) in power-line cycles for measurements. This is a global command; setting the voltage speed also sets current and resistance to the same PLC value.

Sets the integration period (measurement speed) in power-line cycles for voltage measurements. This is a global command, so setting voltage speed also affects current and resistance measurements.

Queries the averaging filter count. The manual also documents qualifier forms to query the *RST default count, the minimum allowable count, or the maximum allowable count.

Selects the averaging filter type for the sense function. The filter type can be Repeat or Moving, and the filter count is set with :AVERage:COUNt; the command is ignored in Model 2430 Pulse Mode.

Enables or disables the digital averaging filter. When enabled, voltage, current, and resistance readings are filtered according to how the filter is configured.

Selects the measurement function. In the ohms programming example, it sets the function to resistance.

Selects the ohms measurement mode. The example sets it to auto mode.

Selects the ohms measurement range. The programming example shows setting the range to 20E3 for a 20 kΩ range.

RES:RANG 20E3

Controls auto zero for remote operation. Disabling auto zero can increase pulse speed, but zero drift may reduce pulse measurement accuracy.

Enables or disables remote sense.

Sets the guard type used by Source Memory saved configurations. It is listed in the Source memory saved configurations table as the remote command for Guard type.

Places the SourceMeter into the idle state. The manual notes that :SYSTem:PREset can be executed under any circumstance while operating within the trigger model.

Clears all messages from the Error Queue.

Queries the state of the beeper.

Path to read messages in the error queue. The optional :NEXT?, :ALL?, and :COUNt? forms return and clear error information or count errors.

Path to return error code numbers only. Use [:NEXT]? to return and clear the oldest error code, or :ALL? to return and clear all error codes.

Queries the current guard type.

Queries the last pressed key.

Query the current power-on setup.

Specify the resistance threshold for contact check. Used with :SYSTem:CCHeck; the default is 50 ohm.

Controls auto zero and NPLC caching. The state setting enables auto zero, disables it, or forces an immediate update with ONCE.

Queries the auto zero state. Auto zero can be OFF (disabled), ON (enabled), or ONCE (force immediate update of auto zero).

Returns a list of NPLC values in the cache, ordered from oldest to newest.

Force an immediate update for all NPLC values in cache.

Clears the cache of all NPLC values.

Controls NPLC caching.

Queries the NPLC caching state.

Enables or disables auto line-frequency selection. The setting is not affected by *RST or :SYSTem:PRESet.

Query the selected line frequency.

Queries the auto range on compliance mode setting. The mode controls whether auto range on compliance uses single or multiple mode.

Timestamp functions. Resets the timestamp to zero seconds and can enable or disable automatic timestamp reset when exiting idle.

Enable or disable timestamp reset when exiting idle.

Returns the instrument to states optimized for front panel operation. :SYSTem:PRESet defaults are listed in the SCPI tables.

Controls the SourceMeter beeper at a specified frequency and duration. The beeper must be enabled to use this command.

:SYSTem:BEEPer500, 1

Initializes battery-backed RAM. This clears trace data, resets buffer size and timestamp format, deletes user-defined math expressions, and reinitializes memory sweep and standard save setups.

Returns the list of NPLC values stored in the cache, from oldest to newest.

Updates the NPLC cache values.

Clears the NPLC values from the auto zero cache.

Enables or disables NPLC caching. When enabled, the instrument caches A/D reference and zero values for recent NPLC settings.

Enable or disable the beeper. When enabled, a short beep is provided to signal that a front panel key has been pressed.

Manually selects the line frequency setting. The manual says to use 50 for 50 Hz or 400 Hz operation, and 60 for 60 Hz operation.

Enables or disables automatic line frequency selection. When enabled, the instrument senses the line frequency on power-up and selects the appropriate setting; manually setting the line frequency disables auto frequency.

Clears the Error Queue of messages.

Reads all error codes and messages from the Error Queue. All messages are sent to the computer when the SourceMeter is addressed to talk, and are then removed from the queue.

Reads all errors from the Error Queue as codes only. It is identical to :SYSTem:ERRor:ALL? except that only the codes are returned and all errors are cleared from the queue.

Reads and returns the oldest error code from the Error Queue. The error is cleared from the queue after the query is sent.

Returns the number of messages in the Error Queue. After the command is sent and the SourceMeter is addressed to talk, a decimal number is returned.

Reads the oldest error from the error queue, returning the code and message. After the command is sent and the instrument is addressed to talk, the oldest message is sent to the computer and removed from the queue.

Simulates a front-panel key press using a numeric key-press code. The query form returns the key-press code number of the last key pressed.

:syst:key 15

Removes the SourceMeter from remote state and enables the front panel keys. This action command can only be sent over the RS-232 interface.

Enables or disables local lockout for the front panel keys during remote operation. When enabled, the keys are locked out; when disabled, they remain operational in remote. This command can only be sent over the RS-232 interface.

Returns the current timestamp value.

Reads the version of the SCPI standard being used by the SourceMeter.

1996.0

Controls the auto range change mode. In SINGle mode the SourceMeter auto ranges only after the first reading; in MULTiple mode it auto ranges up on compliance in the Delay phase of the Source-Delay-Measure cycle.

Resets the absolute timestamp to 0 seconds. The timestamp also resets to 0 seconds every time the SourceMeter is turned on.

Enables or disables automatic timestamp reset. When enabled, the timestamp is automatically reset when exiting the idle layer of the trigger model.

Determines the power-on setup conditions of the SourceMeter.

Selects the contact-check threshold resistance. The threshold ranges from 0 to 60 and maps to 2W, 15W, or 50W threshold resistance depending on the numeric value.

Query sense selection for contact check.

Enables or disables contact check. When contact check is used, remote sensing must be enabled with :SYST:RSEN ON.

Sets the contact check threshold resistance. The contact check function indicates a failure when the connection path resistance is greater than the programmed value.

Sets the contact check threshold resistance. The contact check function indicates a failure when the connection path resistance is greater than the programmed value.

Enables or disables contact check. When contact check is used, remote sensing must be enabled (:SYST:RSEN ON).

Queries whether Message Exchange Protocol (MEP) is enabled. A return of 1 indicates SCPI protocol is selected; 0 indicates MEP is disabled and the 488.1 protocol is enabled.

:SYSTem:MEP[:STATe]?

Controls NDAC hold-off in GPIB 488.1 protocol mode. The default is OFF.

Enables or disables the measurement filter. In Pulse Mode, the command causes error +831 because filtering cannot be used.

Enables or disables concurrent measurements. In Pulse Mode, using this command causes error +831: Invalid in Pulse Mode.

Selects the ohms measurement function when used in Pulse Mode. The manual notes that this command will select the ohms function.

Enables or disables offset-compensated ohms measurements. In Pulse Mode this command is invalid and causes error +831.

Sets or queries the measurement function used for signal-oriented measurements. In Pulse Mode, :MEASure[:<function>]? is invalid and causes error +831.

Performs an initiate operation and takes the instrument out of idle so measurements can be made. The command automatically turns the source output on and leaves it on after the instrument returns to idle.

Measures the selected function and returns the reading. The function is optional in the command syntax.

Sets the source voltage level. The example shows the source set to 10 V with `:SOUR:VOLT 10`.

:SOUR:VOLT 10

Sets the sweep start voltage. The example shows it used with the volts sweep commands to define a linear staircase sweep.

:SOUR:VOLT:START 1 1V start voltage.

Sets the triggered source current level. The example shows it being used to output 100 mA when triggered.

:SOUR:CURR:TRIG 0.1

Defines the math formula for a user-defined math function. Valid names are VOLTage, CURRent, RESistance, and TIME, and the formula may use the listed math operators.

:CALCulate:MATH[EXPression] <form> Define math formula (form = formula).

Queries the list of math expression names.

Read the result of the math expression from CALC1. The command returns only the most recent math result when used as :LATest?.

Returns only the most recent math result from CALC1 data.

Delete all user-defined math expressions in CALC1. This is the :MATH:DELete path for the CALCulate[1] subsystem.

Deletes a specified user-defined math expression from the CALC1 math subsystem.

Define a math expression using standard math operator symbols. This command belongs to the CALC1 MATH subsystem and creates or defines the user expression name.

Queries the name created for the user-defined math expression.

Enable or disable math expression state for CALC1.

Queries the state of math expression CALC1. Returns whether the expression is enabled or disabled.

Same as :EXPRession <form> command.

Path to configure and control math expressions for CALC1. Use :EXPRession <form> to define a math expression using standard math operator symbols, or :EXPRession? to query the current expression.

Queries the math expression defined for CALC1. The expression uses standard math operator symbols.

Queries the list of math expression names. The returned list includes built-in names and any user-defined expression names.

Selects the math expression name for CALC1. The name may be one of the built-in expressions or a user-defined name up to 10 ASCII characters.

Queries the selected math expression name for CALCulate[1]. The expression can be one of the built-in names or a user-defined name up to 10 ASCII characters.

Deletes all user-defined math expressions from the catalog. Built-in math expressions are not affected.

Deletes the specified user-defined math expression from the catalog. Once removed, the expression can no longer be selected; built-in math expressions cannot be deleted.

:DELete “math1”

Specifies the units suffix name for a user-defined math calculation. Use three ASCII characters; if fewer than three are used, pad with spaces on the right.

:calc:math:unit “Z ”
:calc:math:unit ‘Z’

Query the units suffix name for a user-defined math calculation. The units name is a three-character ASCII string; if fewer than three characters are used, pad with spaces on the right.

:calc:math:unit “Z ”
:calc:math:unit ‘Z’

Query the user-defined math expression for the selected calculation. After a math expression is defined, it is assigned to the name created with the :NAME command.

Defines a user-defined math formula for calculation 1. The formula may use instrument readings, numeric constants, and standard math operator symbols.

Defines a math formula for a user-defined calculation. The expression can use instrument readings, numeric constants, standard math operators, and optional vector indices in brackets.

:CALCulate[1]:MATH[:EXPression][:DEFine] <form>

Reads the result of the CALC1 calculation. For scalar math it returns results for all programmed source-measure points; for vector math it returns results only for the specified vector points.

Enables or disables the CALC1 calculation. When enabled, the selected math expression is performed during triggered source-measure operations; when disabled, :CALC1:DATA? returns NAN.

Queries the on/off state of CALC1 calculation. When enabled, the selected math expression is performed on triggered source-measure operations; when disabled, :CALC1:DATA? returns NAN.

Request the raw readings stored in the buffer. The example shows it being used after a measurement sequence has been initiated.

::TRACE:DATA?
::TRACE:DATA?

Queries the buffer control mode.

Queries the buffer size.

Queries the number of readings currently stored in the buffer.

Queries the timestamp format used in the trace subsystem.

Clears the buffer of readings. If the buffer is not cleared, a subsequent store will overwrite the old readings.

Reads the contents of the buffer. When sent and the SourceMeter is addressed to talk, all readings stored in the data store are sent to the computer; the bus format is controlled by the :FORMat subsystem.

Reads the status of storage memory. When addressed to talk, the SourceMeter sends two comma-separated values: bytes available and bytes reserved for storing readings.

Selects the source of readings to be placed in the trace buffer. Raw Sense readings, Calc1 results, or Calc2 readings can be stored.

Starts or stops buffer storage by selecting how the trace buffer is controlled.

Specifies the size of the buffer. The command also supports querying the current size and the MINimum, MAXimum, and DEFault values.

Selects the timestamp format for buffer readings. ABSolute references each timestamp to the first reading stored in the buffer, while DELTa returns the time between buffer readings.

:TRACe:TSTamp:FORMat <name>
:FORMat?

Sets the CALC1 math expression name.

Sets the CALC2 input path.

Sets the fail condition behavior for limit 1 compliance. The manual lists this command as the remote command for "Limit 1 fail conditions".

Sets the REL value used by CALC2 nulling. The table lists this command as the remote command for the REL value setting.

Enables or disables the CALC2 relative (NULL) function.

Sets the memory location used for the next pass branch in Source Memory Sweep limit test branching. When NEXT is selected, the sweep proceeds to the next memory location regardless of pass or fail.

Sets the source memory lower bit pattern for Limit X. X = CURRent or VOLTage, and Limit X = Limit 2, 3, 5-12.

Sets the lower limit for Limit X. X is Current or Voltage, and Limit X can be Limit 2, 3, or 5-12.

Enable or disable Limit X. The manual identifies Limit X as Limit 2, 3, or 5-12, with X standing for CURRent or VOLTage elsewhere in the table.

Sets the source used for the Limit X upper bit pattern on Source Memory Sweep operations. X is CURRent or VOLTage.

Sets the upper limit data for Limit X. X is Current or Voltage, and Limit X refers to Limit 2, 3, 5-12.

Sets the bit pattern source for Limit 1 compliance. The command is listed in the source memory saved configurations table.

Sets the source memory location used as the pass branch target for limit testing sweep branching. This option is available via remote for configuring sweep branching.

Specify the lower Limit X value, where X can be 2, 3, or 5-12.

Specifies the upper Limit X value for limit testing, where X may be 2, 3, or 5-12.

Specifies the fail source memory location. The location may be a memory number or NEXT for the next location.

Clear test results and reset the I/O port.

Queries the result of Limit X test. For X = 2, 3, 5-12, it returns 0 for pass and 1 for fail.

Specify pass pattern for sorting mode.

Returns only the most recent CALC2 math result.

Returns the result of Limit 5 through Limit 12 tests. The return is 0 for pass or 1 for fail.

Specifies the output fail pattern used by Limit 5 to 12 tests in grading mode. The value is an <NRf> or <NDN> pattern, with the documented range depending on bit width.

Query the lower limit source pattern for Limit 5 through Limit 12 tests.

Configure the lower limit for Limit 5 through Limit 12 tests. The lower limit data value may be specified with an optional :DATA node.

Queries the lower limit data for Limit 5 through Limit 12 tests. Returns the present lower limit value.

Path to control Limit 5 to Limit 12 tests.

Queries the fail bit pattern for Limit 5 through Limit 12 pass testing. The manual says this returns the output fail pattern used for grading mode.

Enables or disables Limit 5 through Limit 12 tests.

Queries the state of Limit 5 to Limit 12 tests.

Configure the output fail pattern used for grading mode for Limit 5 to 12 tests. The command takes a source pattern value and supports 3-bit or 4-bit fail patterns.

Queries the output fail pattern used for grading mode for Limit 5 through Limit 12 tests. The returned value is the fail bit pattern.

Configure the upper limit for Limit 5 through Limit 12 tests. The value is stored in SCPI memory and defaults to 1.

Queries the upper limit value for Limit 5 through Limit 12 tests. The upper limit is configured with :CALCulate2:LIMit5…12:UPPer[:DATA] <n>.

Enable or disable clearing of test results when :INITiate command is sent.

Queries the state of auto clear for CALCulate2. Auto clear controls whether test results are cleared when the INITiate command is sent.

Clear the latest limit test result and reset the Digital I/O port back to :SOURce2:TTL settings.

Specifies the next FAIL Source Memory location for CALCulate2. The location can be set to a specific memory number or to NEXT.

Query the PASS memory location for CALCulate2 fail settings.

Define fail digital output pattern. Used to specify the fail output pattern and the next FAIL source memory location.

Queries the fail digital output pattern for CALCulate2. The returned value is the fail bit pattern.

Specifies the next PASS Source Memory location. The location may be set to NEXT or a numeric memory location from 1 to 100.

Queries the PASS memory location for CALC2. The location can be NEXT or a numeric memory location from 1 to 100 when set via the corresponding setter.

Specify the pass digital output source memory location for CALCulate2. The location can be the next location or a numbered location from 1 to 100.

Queries the pass bit pattern for CALCulate2. The returned format is set by :FORMat:SOURce2 <name>.

Queries the input path used for limit tests. The selected path determines whether limits compare against CALC1 results, measured voltage, current, or resistance.

Automatically acquires the null offset value. If no reading is available, the next available reading becomes the null offset value.

Queries the null offset value for the selected feed. When null offset is enabled, the CALC2 reading is the feed reading minus the offset value.

:CALCulate2:NULL:OFFSet?

Controls null offset for CALC2. When enabled, the CALC2 reading includes the null offset value; when disabled, it does not.

Queries when Limit 1 test failure occurs.

Queries the specified lower limit for limit test x. The query can also be qualified with DEFault, MINimum, or MAXimum to read the corresponding lower, lowest allowable, or largest allowable lower limit.

Queries the specified upper limit for CALC2 limit tests. The query also accepts DEFault, MINimum, or MAXimum to query the *RST default, lowest allowable, or largest allowable upper limit.

Queries the programmed source value for the specified limit. The source value can be specified as binary, octal, decimal, or hexadecimal in the corresponding setter command.

Returns the programmed composite pass source value for the Digital I/O Port. The value may be specified as a 3-bit or 4-bit pattern in decimal, binary, octal, or hexadecimal form when set by the corresponding setter.

Specifies the fail pattern for Limit 1 testing in sorting mode, using a 3-bit or 4-bit output pattern. The output value may be entered in decimal, binary, octal, or hexadecimal form.

Specifies the fail pattern for sorting mode. For the Limit 1 test, it defines the 3-bit or 4-bit output pass pattern when Limits 2, 3, and 5-12 are disabled.

Queries the pass or fail source memory location used during Source Memory Sweep limit testing. With PASS selected, the sweep branches to the specified memory location on success; with FAIL, it branches on failure. With NEXT selected, it proceeds to the next location in the list.

Controls auto-clear for limit test results. When enabled, test results and Digital I/O output lines reset when :INITiate starts a new test sequence; when disabled, :IMMediate must be used to clear them.

Queries the auto-clear state for limit test results. When enabled, test results clear and the Digital I/O port output lines reset when :INITiate starts a new test sequence; when disabled, :IMMediate must be used to clear them.

Clears the test results and resets the Digital I/O port output lines back to the :SOURce2:TTL settings.

Selects binning control for grading mode; immediate at failure or end of sweep.

Queries the binning control mode for grading mode.

Selects the limit testing mode for contact check operation.

Queries the current limit testing mode for contact check operation.

Defines the digital output fail patterns for the Limit 4 test. The pattern may be entered as a decimal value or in binary, octal, or hexadecimal notation.

Queries the source value for the specified LIMIT 4 test. The command is part of the contact check function and relates to defining the digital output fail patterns for the LIMIT 4 test.

Selects the front or rear terminals for the source/measure connection path.

Queries the state of the selected source/measure terminal routing. The slice does not provide the returned format or values.

Sets the trigger delay. Not available when the Model 2430 is in Pulse Mode.

Sets the trigger count. The count is the number of trigger cycles to perform.

Controls trigger bypass. The setting names the trigger direction as source or acceptor.

Selects the trigger layer input line. The input line number is specified as NRf.

Selects which trigger-layer events are generated at the trigger input layer. The event list can be SOURce, DELay, SENSe, or NONE.

Selects the trigger layer output line.

Selects the trigger layer output events. The event list can be SOURce, DELay, SENSe, or NONE.

Specifies the trigger control source. The available sources are IMMediate or TLINk.

Selects the input trigger line for asynchronous triggering. The line number is configurable for the arm sequence asynchronous layer.

Selects the input trigger line for the asynchronous trigger configuration. The line must be one of 1, 2, 3, or 4.

Selects the output trigger line in the Arm asynchronous trigger configuration. The selected line can be queried with the corresponding `:OLINe?` command.

Queries the selected asynchronous output trigger line in the Arm layer.

Selects the output trigger state for the Arm Asynchronous layer. The output trigger can be set to TENTer, TEXit, or NONE.

Query the arm-layer asynchronous output trigger setting. Returns the present output trigger status.

Specify arm count. The count can be set from 1 to 2500 or to INFinite.

Queries the arm count in the trigger arm sequence. INFinite is returned as +9.9e37.

Selects the control source for the Arm Layer sequence. The source can be immediate, timer, manual, bus, or one of the trigger link/test sources.

Queries the control source for the Arm Layer Sequence Layer 1. The control source is one of the documented trigger source keywords for that layer.

Configures whether the trigger bypass is enabled or disabled for the arm sequence. It is a setter command with the value accepting either source bypass or acceptor bypass.

Queries the state of the trigger arm sequence layer direction setting. The manual describes the setting as enabling source bypass or disabling it as acceptor.

Sets the timer interval in the Arm layer sequence. The interval is specified in seconds and can be used when the arm control source is TIMer.

Queries the timer interval used by the arm sequence. The manual lists this command under the Arm Layer timer setting.

Queries the trigger count for the Trigger Layer sequence. The value returned is the current count setting.

Queries the trigger delay in the Trigger Layer. For Model 2430 Pulse Mode, trigger delay is not used and the command is ignored.

Queries the trigger layer control source for the specified sequence. The control source can be IMMediate or TLINk.

Selects the input trigger line for asynchronous output trigger configuration. The input trigger line can be one of four lines.

Queries the selected input trigger line for the asynchronous trigger configuration.

Configures input trigger event detectors for the asynchronous trigger subsystem. The enabled events can be SOURce, DELay, SENSe, or NONE.

Queries the enabled input event detectors for asynchronous output triggers.

Selects the output trigger line for asynchronous trigger configuration.

Queries the output trigger line used for asynchronous trigger configuration.

Configure output triggers. Select when the output trigger occurs after SOURce, DELay, SENSe, or not at all (NONE).

Queries when the output trigger is going to occur.

Queries the state of bypass direction under trigger sequence configuration. The bypass is enabled with SOURce or disabled with ACCeptor.

Clears any pending latched input triggers immediately. The manual recommends sending it after :ABORt when using external triggering and before an initiate command at the start of a program.

Sets the trigger count for the trigger model.

Sets the delay used in the trigger layer. After the programmed trigger event occurs, the instrument waits until the delay expires before performing the Device Action.

Selects the trigger event control source. With IMMediate, operation continues immediately; with TLINk, operation continues when a trigger pulse is received via Trigger Link.

Controls trigger bypass direction. Use SOURce to enable control source bypass or ACCeptor to disable it.

Enables event detectors in the Trigger Layer when TLINk is the selected Trigger Layer control source. Event detectors are enabled by listing their names in the event list; disabled detectors do not hold up operation.

:TRIGger:INPut SOURce, SENSe

Selects the input line for the Trigger Link on the trigger layer. For normal operation, Trigger Link input and output should not share the same line.

:TRIGger[:SEQuence[1]][:TCONfigure]:ILINe 1

Selects the Trigger Link output line for the trigger layer. For normal operation, Trigger Link input and output should not share the same line.

Specifies when trigger pulses occur on the selected output trigger line of the Trigger Link. For the trigger layer, you can select one to three events separated by commas; NONE disables the output trigger.

Programs the contact check timeout interval. When contact event detection is enabled, the SourceMeter waits this long before issuing an open lead failure and moving on to the next measurement; if set to 0, it waits indefinitely.

:TRIGger:SEQuence2:TOUT <NRf>
:TRIGger:SEQuence2:TOUT 0

Programs the contact check timeout interval. When contact event detection is enabled, the instrument waits this timeout before issuing an open lead failure and proceeding to the next measurement; if set to 0, it waits indefinitely.

Takes the instrument out of the idle state and initiates trigger-model operation. The manual notes that it is one of the commands that perform an initiate operation.

Takes the SourceMeter out of idle state and initiates source-measure operation. :READ? and :MEASure? also perform an initiation.

Sets the arm count. The parameter n specifies the count.

Controls arm bypass direction.

Selects the arm layer input line.

Selects the arm layer output line. The parameter is the output line number.

Selects the arm layer output events. The event list can be TENTer, TEXit, or NONE.

Specifies the arm control source. The available sources are IMMediate, TLINk, TIMer, MANual, BUS, NSTest, PSTest, or BSTest.

Sets the timer interval for the :ARM subsystem. The query form returns the timer interval, and the query also accepts DEFault, MINimum, and MAXimum to return the *RST default value or the lower and upper limits.

:ARM:TIMer 0.1
:ARM:TIMer DEFault
:ARM:TIMer MINimum
:ARM:TIMer MAXimum

Sets the arm count for the program trigger model. The count can be set from 1 to 2500, or set by the special keywords DEFault, MINimum, MAXimum, and INFinite as documented.

Specifies the arm event control source. The source determines what event causes the arm sequence to continue, such as immediate execution, Trigger Link, timer, manual trigger, bus trigger, or test pulses.

Sets the interval for the arm layer timer. The timer is in effect only if it is the selected control source.

Controls arm bypass direction. Use SOURce to enable control source bypass or ACCeptor to disable it.

Selects the Trigger Link input line for the arm layer. For normal operation, Trigger Link input and output should not share the same line.

Selects the output line used for the Trigger Link in the arm layer. For normal operation, Trigger Link input and output should not share the same line.

Selects the arm-layer output trigger events. The manual also lists the corresponding trigger-layer form of the command and the available event keywords.

Clears the digital output lines on Source 2.

Queries the actual output pattern of Digital I/O source 2. The command is not valid for the Model 2401.

Controls the digital output line logic levels using a decimal value corresponding to the output line states.

:SOUR2:TTL 5

Specifies the delay for the digital output clear pass/fail pattern. The delay is given in seconds.

Queries the delay for the digital output clear function on Source 2.

Queries the BUSY and EOT polarity for digital output line 4. The setting is part of the :SOURce2:TTL4 digital output mode controls.

Queries the Digital I/O line 4 mode.

Reads the actual digital output pattern for Source 2 TTL. The output pattern format is set by `FORMat:SOURce2 <name>`.

Specify the digital output pattern for Source 2 TTL output. The default output pattern may also be queried, and the actual output pattern can be read with :ACTual?.

Specifies the digital output pattern for Source 2. The default output pattern can also be queried.

Sets the logic levels of the digital output lines for the Digital I/O port. When set high, the specified output line is approximately +5 V; when set low, it is 0 V.

Sets the polarity of the BUSY and EOT signal in 3-bit mode. The command controls whether the signal is active high or active low.

Controls Digital I/O port line 4 mode. Line 4 can be used as an End-of-Test or Busy signal in 3-bit output mode.

Sets the delay for digital output auto-clear. After the delay times out, the output returns to the pattern programmed by the :TTL:LEVel command.

Sets the digital I/O port bit size for source 2. The manual states the bit size can be 3 or 4.

Queries the bit size of digital I/O port 2 used for contact check operation.

Sets the lower value for Limit 2 in the limits test example. It is used with :CALC2:LIM2:UPP to define the pass/fail window.

Sets the upper limit value for Limit 2 in the limits test. The example shows it being assigned 0.85 V.

:CALC2:LIM2:UPP 0.85

Sets the digital I/O pattern used for the contact check limit test. The default setting is 0-7 for 3-bit and alternately 0-15 for 4-bit.

:CALC2:CLIM:BCON IMM

Configure the contact check limit test (Limit 4) in the hardware limits menu. The slice indicates this limit can be enabled or disabled and used with a contact check digital I/O pattern.

Sets or queries the output state. The command is used as the root for output control commands such as :OUTPut ON.

:outp on <PMT>

Enables or disables the output enable for output 1. The optional state query returns the state of output enable.

Queries the present state of source output. Returns whether the source is on or off.

Queries the state of the source output. Measurements cannot be made while the source is off.

Turns the source output on or off. Measurements cannot be made while the source is off, which places the SourceMeter in the idle state except when source auto clear is enabled.

This query command is used to determine whether the output enable has been tripped. The tripped condition ("1") means the source can be turned on; "0" means it cannot be turned on because the output enable line is at logic high.

Controls the output enable line. When enabled, the source cannot be turned on unless the output enable line is pulled low; when the line goes high, the source turns off.

Controls the output enable line state. When enabled, the source cannot be turned on unless the output enable line is pulled low; when the line goes high, the source turns off.

Selects the output-off state of the SourceMeter. The HIMPedance setting opens the output relay when the source is turned off, disconnecting external circuitry from the SourceMeter input/output.

Selects the output-off mode of the SourceMeter. The manual says the available modes are HIMPedance, NORMal, ZERO, and GUARd, and describes how each mode behaves when the output is turned off.

Turns the output on or off. The manual notes that output must be on before readings can be taken.

Resets the event registers to 0 and clears all messages from the Error Queue. The Standard Event Enable Register is not reset by *CLS.

Reads the Status Byte Register. When used with *STB?, bit B6 is the Master Summary Status (MSS) bit.

Sets the Service Request Enable register. The register controls whether status summary bits can set bit B6 (RQS/MSS); sending 0 clears the register.

*SRE 0

Reads the Service Request Enable Register. The register is programmed with *SRE and clears when power is cycled or when *SRE 0 is sent.

Programs the Standard Event Enable Register.

Reads the Standard Event Enable Register.

Returns the manufacturer, model number, serial number, and firmware revision levels of the unit.

Saves the present setup in nonvolatile memory. The stored setup can later be recalled with *RCL <NRf>.

Performs a checksum self-test on ROM and places the coded result in the output queue. A returned value of 0 indicates the test passed; 1 indicates the test failed.

Reads the Standard Event Status Register.

Queries installed options. The response message indicates the presence or absence of options, such as no options present or a contact check board present.

Sets or queries the IEEE-488.1 operation complete status. It is still functional in 488.1 protocol mode, but is not needed there.

Sets the operation complete query for GPIB 488.1 protocol use. In this manual slice it is mentioned as functional but not needed for the 488.1 protocol.

Recalls a stored instrument state. It is listed as an initiate command in the 488.1 protocol notes and releases bus hold-off immediately during data acquisition.

Resets the instrument. In 488.1 protocol mode, it is one of the commands that immediately releases bus hold-off during data acquisition.

Triggers the interface bus; the manual notes it as an initiate command that releases bus hold-off immediately during data acquisition. It is supported during data acquisition along with GET, SDC, IFC, *RCL, *RST, SYSTem:PRESet, and ABORt.

Waits until all previously received commands have finished executing. In this protocol it is still functional but not needed because the bus is automatically held off until command execution completes.

Returns the active function(s).

Selects the function to be configured for subsequent measurements or source-measure operations.

Specifies the data elements included in formatted data output for the Sense path. The optional ":SENSe[1]" node selects the Sense subsystem.

Queries the selected data elements for format output. The optional :SENSe[1] node scopes the element list to sense data.

Selects the data format for transferring instrument readings over the bus. For the REAL format, <length> is optional and defaults to 32 if omitted; ASCII is the only format allowed over RS-232.

Queries the current data format used for transferring instrument readings over the bus. The command affects output formatting for READ?, FETCh?, MEASure?, TRACe:DATA?, CALC1:DATA? and CALC2:DATA? over GPIB; ASCII is the only format allowed over RS-232.

Specifies which data elements are included in the data string. The selected elements are used in responses to :FETCh?, :READ?, :MEASure?, and :TRACe:DATA?.

Specifies which data elements are included in the data string returned by measurement and fetch queries. Up to five elements can be selected, separated by commas.

Sets the CALC data element list used for CALC1:DATA? and CALC2:DATA? responses, and when TRACe:FEED is set to CALC1 or CALC2. The list can include calculation data, timestamp, and status information.

Sets the response format for SOUR2 and TTL queries. The format applies to all CALC2:XXXX:SOUR2 and SOUR2:TTL queries in a manner similar to FORM:SREG.

Sets the response format for all CALC2:XXXX:SOUR2 and SOUR2:TTL queries. The format can be ASCII, hexadecimal, octal, or binary.

:FORMat:SOURce2 <name>

Specifies the byte order used for IEEE-754 binary formats. The ASCII data format is always sent in normal byte order, and the SWAPped selection is ignored when ASCII is selected.

Queries the current binary byte order used for IEEE-754 binary formats. The command controls whether binary data is sent in normal or reversed byte order; ASCII data always uses normal order.

Sets the response message format for reading status registers.

Sets the response message format used when reading status event registers. The query form returns the current format.

Specifies the status data element for contact check. Bit 18 (262144) of the status word returned by various read, fetch, measure, and data commands signifies contact check status; if LIMIT 4 is enabled, the limit pass/fail status is also returned.

Reads the measurement enable register. The response format depends on the currently selected status register format (ASCII, hexadecimal, octal, or binary).

Reads the operation status enable register. The response format depends on the currently selected status register format.

Reads the enable register for the questionable status registers.

Reads the disabled messages in the status error queue. This command is part of the :STATus:QUEue subsystem.

Read the enabled messages in the error queue.

Reads the contents of the Measurement condition register and returns a value indicating which bits are set.

Programs the contents of the Measurement Event Enable Register.

Reads the contents of the Measurement Event Register. After the command is sent and the instrument is addressed to talk, it returns a value indicating which bits in the register are set.

Reads the contents of the operation condition register.

Programs the contents of the Operation event enable register.

Reads the contents of the Operation event register and returns a value indicating which bits are set. After sending the command and addressing the SourceMeter to talk, the register contents are sent to the computer.

Reads the contents of the Questionable condition register. A value is sent to the controller indicating which bits in the register are set.

Programs the contents of the Questionable event enable register.

Reads the contents of the Questionable Event Register. After the command is sent and the instrument is addressed to talk, a value is returned indicating which bits in the register are set.

Returns the event registers to default conditions. The Operation Event Enable Register, Event Enable Register, and Measurement Event Enable Register are cleared to zero; the Standard Event Register is not affected.

Clears the Error Queue of messages.

Specifies which error messages are enabled for entry into the Error Queue. Messages not specified are disabled and prevented from entering the queue.

Reads the next message from the Error Queue. It performs the same function as :SYSTem:ERRor? and is used to retrieve error and status messages as they occur.

Disables specified messages for the Error Queue. Disabled messages are prevented from going into the Error Queue.

Specifies the CALC3 statistical format used for readings stored in the buffer. The selected statistic is used when CALC3 data is acquired.

:CALCulate3:FORMat <name>

Queries the programmed CALC3 math format. The selected statistic is used for readings stored in the buffer.

:CALCulate3:FORMat?

Sets the display resolution. Rational numbers may also be used; the instrument rounds them to an integer.

Sets or queries the display resolution for the SourceMeter display. Rational numbers may also be used for the setter; the instrument rounds them to an integer.

:DISPlay:DIGits <n>
:DISPlay:DIGits?

Returns the instrument to the source-measure display state, showing source, measure, and compliance readings. If a menu is currently displayed, this command exits the menu and restores the normal display.

Enables or disables the front panel display circuitry. When disabled, the instrument operates at a higher speed and the display is frozen until re-enabled or the instrument is put into local.

Query state of the display circuitry. The command reports whether the front-panel display is enabled or disabled.

Queries which characters on the specified display are blinking. The response message returns the blink status of each character position for the top display (20 characters) or bottom display (32 characters).

Reads what is currently being displayed on the selected display window. After the command is sent and the SourceMeter is addressed to talk, the displayed data (message or reading) is returned to the computer.

Defines a text message for the display. The message can be up to 20 characters for the top display and up to 32 characters for the bottom display; excess characters cause an error.

:DISPlay[:WINDow[1]]:TEXT:DATA <a>

Reads the text currently defined for the display message on the specified display window. After the command is sent and the instrument is addressed to talk, the message is returned to the computer.

Controls whether the text message mode is enabled for the specified display. The command is documented for the top display with the optional window node; the same function is shown for the bottom display on Window2.

Queries the message mode state for the specified display. The query returns whether the text message is enabled or disabled.

Queries the state of the digital averaging filter. When enabled, voltage, current, and resistance readings are filtered according to the filter configuration.

Queries the state of auto output-off for the source. Auto output-off controls whether the source output turns on at the beginning of each SDM cycle and turns off after each measurement, or remains on until explicitly turned off.

Queries the auto output-off mode for the source. For this command, the source will turn off after every SDM cycle with ALWAYS, or after the trigger count has expired with TCOunt.

Selects the output mode for the Model 2430. DC selects DC Mode and PULSE selects Pulse Mode.

Queries the selected source mode. The command is documented alongside the source-mode setting command, but this query returns the current source mode.

Queries the triggered amplitude for the fixed source. It can also return the *RST default, minimum, or maximum allowable amplitude when used with the DEFault, MINimum, or MAXimum qualifier.

Queries the V-Source over-voltage protection limit level. The query can also request the default, minimum, or maximum allowable limit using a qualifier.

Returns the currently programmed source delay. The query also accepts the qualifiers DEFault, MINimum, and MAXimum to return the *RST default, lowest allowable, or highest allowable delay.

:DELay?

Queries the source ranging mode used for sweeps.

Selects the scale for a sweep. LINear performs the sweep on a linear scale, and LOGarithmic performs it on a logarithmic scale.

Queries the start level for a sweep. Special query forms allow retrieving the default, minimum, or maximum allowable start level.