4-Channel Isolated D/A Converter with Waveform Memory Module 11
34980A User’s Guide 297
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.
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