As shown in the figure, you can configure digital ports pins 3 through 7 to provide the OnCouple and
OffCouple signals that enable or disable the output. The output is enabled or disabled when the
corresponding signal is true. Refer to Output Couple Control for more information on configuring the
digital port pins.
User-defined expression signals can also be used to enable or disable the output. User-defined
expressions can combine a wide variety of status signals and output level conditions to create an
expression signal that, when true, will enable or disable the output. Refer to Defining Signal
Expressions and Signal Expression Targets for more information.
Lastly, you must enable output sequencing to use OnCouple, OffCouple, and expression signals to
enable or disable the output. Refer to Enable Output Sequencing below.
Sequencing Multiple Units
To sequence the output turn-on sequence for multiple units:
1. Connect and configure the digital connector pins of all units.
2. Enable the sequence function on each unit.
3. Specify the user-programmed turn-on delay for each unit.
4. This step is required if you have power supplies with different minimum delay offsets (see above).
Specify a common delay offset for all of the sequenced units. The common delay offset must be larger
or equal to the largest maximum delay offset. When the common delay offset completes, the user-
programmed turn-on delays will start.
Connect and Configure the Digital Connector Pins
The digital connector pins of the sequenced units must be connected together and configured. Refer
to Output Couple Control for more information.
Enable Output Sequencing
Output turn-on sequencing must be enabled on each unit that will participate in output turn-on
synchronization.
Front Panel Menu Reference SCPI Command
Select Output\Sequence\Couple.
Check Enable to enable sequencing.
Uncheck to disable.
To enable, send:
OUTP:COUP ON
To disable, send:
OUTP:COUP OFF
Keysight N6900/N7900 Series Operating and Service Guide 129
4 Using the Advanced Power System
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