Agilent Technologies Switch/Measure manual External Trigger, Auto Calibration

4-Channel Isolated D/A Converter with Waveform Memory Module 9

External Trigger

Example: Selecting the external trigger source and issuing trigger source The following command segment enables the trigger output mode on a DAC module installed in slot 4, then enables the external trigger source on DAC channels 1 and 2. The last command issues an external trigger pulse from the module.

SOURce:MODule:TRIGger:OUTPut ON,4

SOURce:FUNCtion:TRIGger:SOURce EXTernal,(@4001,4002) SOURce:MODule:TRIGger:EXTernal:IMMediate 4

Auto Calibration

Example: Performing an auto calibration on all DAC channels This command performs an auto- cal of all four channels on a DAC module. Because the auto- cal takes can take up to one minute per DAC channel, you may want to increase the time- out value of your programming application prior to sending this command.

The following command performs an auto- cal of a DAC module in slot 5 and returns a pass/fail indication.

CALibration:MODule? 5

The following command performs an auto- cal of all 34951A DAC modules in a mainframe.

CALibration:MODule? ALL

Example: Effects of using the secure state command on storing calibration constants The following command removes instrument security, and the calibration constants are stored in non- volatile memory if sent before the CALibration:MODule? command.

CALibration:SECure:STATe OFF <security code>

If the instrument is secured at the time of auto- cal, the calibration constants are stored in volatile memory and are lost when power is turned off. The *RST command will not discard the calibration constants. The command to secure the instrument is:

CALibration:SECure:STATe ON <security code>

NOTE The default security code is AT34980.

34980A User’s Guide 191