Keysight Technologies RP7931A Guide D'utilisation Et D'entretien page 154

4 Using the Regenerative Power System
Trigger Source
Bus Selects GPIB device trigger, *TRG, or <GET> (Group Execute Trigger).
External Selects ANY pin that has been configured as a Trigger Input on the digital control port.
Immediate Triggers the transient as soon as it is INITiated.
Pin<1-7> Selects a specific pin<n> that is configured as a Trigger Input on the digital control port.
Use the following commands to select one of the available trigger sources:
Front Panel Menu Reference
Not available
Initiate and Trigger the Elog
When the power supply is turned on, the trigger system is in the Idle state. In this state, the trigger
system is disabled, ignoring all triggers. The INITiate command enables the measurement system to
receive triggers. To initiate and trigger the Elog:
Front Panel Menu Reference
Not available
When triggered, the Elog starts placing data in the internal measurement buffer. Because the buffer is
only large enough to hold 20 seconds of accumulated measurement your PC application must
periodically retrieve (or fetch) the data from this buffer.
Periodically Retrieve the Data
Each FETCh command returns number of requested records of the data in the buffer and removes
them, making room available for more data. The Elog continues until it is aborted.
An Elog record is one set of voltage and current readings for one time interval. The exact format of a
record depends on which functions have been enabled for Elog sensing. If all functions are enabled,
then one record will contain the following data in the specified order:
Current average
Current minimum
Current maximum
Voltage average
Voltage minimum
Voltage maximum
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Description
SCPI Command
To select Bus triggers:
TRIG:ELOG:SOUR BUS
To select digital pin 5 as the trigger:
TRIG:ELOG:SOUR PIN5
SCPI Command
To initiate the Elog: INIT:ELOG
TRIG:ELOG
To trigger the Elog:
Alternatively, if the trigger source is BUS, you can also program a
or an IEEE-488 <get> command.
*TRG
Keysight RP7900 Series Operating and Service Guide