Turn-off delays can also be specified for all coupled units. Any delay sequence can be
implemented. There are no restrictions on what the sequence is or what unit turns off first.
Front Panel Menu Reference
SCPI Command
Select
Output\Sequence\Delay
.
Specify the Turn-off delay in seconds.
Repeat for each additional unit.
Program a turn-off delay:
Repeat for each instrument.
Specify the Common Delay Offset
There is no need to specify a common delay offset when outputs turn off. Outputs
start executing their turn-off delays as soon as an Output Off command is received
(and any user-programmed turn-off delay has expired).
Specifying a common delay offset lets you accurately synchronize the user-programmed turn-on
delays when sequencing power supplies with different internal delay offsets.
In the following figure, you can see how the internal delay offsets are appended to the user-
programmed delay times. The internal delay offsets vary based on priority mode, and whether an
SD1000A unit is connected to the power supply.
Although you cannot eliminate the internal delay offset times, you can specify a common delay offset
to accurately synchronize the user-programmed turn on delays with each other. If in the above
example you were to program a common delay offset of 170 ms, that common delay offset would then
supersede the different internal delay times of the coupled units. The 170 ms common offset would in
effect synchronize the internal delay of the coupled units.
4 Using the Regenerative Power System
136
Keysight RP7900 Series Operating and Service Guide
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