Keysight Technologies RP7900 Series, Operating And Service Manual

Page: 137 / 318

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The common delay offset assures that the user-programmed turn-on delays will be synchronized to
start at the completion of the common delay offset. Query the delay offset of each unit and use the
slowest delay as the common delay offset.
Front Panel Menu Reference SCPI Command
Select Output\Sequence\Couple .
The Max delay offset for this frame field displays the delay
offset of the unit. Enter the delay offset value of the
slowest unit in the Delay offset field in milliseconds. Then
press
Select .
To query the delay offset of the slowest unit:
OUTP:COUP:MAX:DOFF?
Use the delay offset of the slowest unit to specify
the common delay offset
OUTP:COUP:DOFF 0.170
To circumvent the additional relay turn-on times of the SD1000A, a non-volatile
OUTPut:RELay:LOCK command can be sent, after which the internal delay offset
will match those of models without connected SD1000A units.
Output Turn-On Turn-Off Behavior
The turn-on and turn-off sequences are primarily controlled by three factors: the user-programmed
turn-on/turn-off delays, the voltage and current priority mode settings, and the operation of the
Keysight SD1000A unit (if installed).
The following table documents the output impedance setting for the turn-on and turn-off sequences.
For models RP793xA and RP794xA only, you can specify either Low or High output impedance when
operating in Voltage priority mode.
Output turn-on/turn-off impedance for Voltage Priority Current Priority
Models RP793xA; RP794xA Impedance is user-selectable via
OUTPut:TMODe command
High impedance turn-on
High impedance turn-off
Models RP795xA; RP796xA Low impedance turn-on
High impedance turn-off
High impedance turn-on
High impedance turn-off
The following flowcharts illustrate the output turn-on and output turn-off sequences followed by a
description of the individual actions. Note that the sections under "With SD1000A" only apply when
the Keysight SD1000A unit is installed.
Keysight RP7900 Series Operating and Service Guide 137
4 Using the Regenerative Power System