Keysight Technologies N6900 Series, Operating And Service Manual

Page: 130 / 358

Specify the Turn-On and Turn-Off Delays for each Unit
Turn-on delays can be specified for all coupled units. Any delay sequence can be implemented. There
are no restrictions on what the sequence is or what unit comes up first.
Front Panel Menu Reference SCPI Command
Select Output\Sequence\Couple.
Specify the Turn-on delay in seconds.
Repeat for each additional unit.
Program a turn-on delay:
OUTP:DEL:RISE .02
Repeat for each instrument.
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 comes up first.
Front Panel Menu Reference SCPI Command
Select Output\Sequence\Couple.
Specify the Turn-off delay in seconds.
Repeat for each additional unit.
Program a turn-off delay:
OUTP:DEL:FALL .01
Repeat for each instrument.
There is no need to specify a delay offset when outputs turn off. Outputs start
executing their turn-off delays as soon as an Output Off command is received.
Specify the Common Delay Offset
The following figures illustrate how the common delay offset can be used to synchronize the user-
programmed turn-on delays when sequencing power supplies with different minimum delay offsets.
In the first figure, the actual start of the output turn on occurs at 22 ms, 58 ms, and 76 ms because the
minimum delay offsets are added to the user-programmed turn on delay.
In the second figure, although you cannot eliminate the minimum delay offset, you can specify a
common delay offset to accurately synchronize the user-programmed turn on delays with each other.
In this example that actual start of the output turn-on occurs at 60 ms, 70 ms, and 80 ms respectively.
You will always need to account for the common delay offset.
4 Using the Advanced Power System
130 Keysight N6900/N7900 Series Operating and Service Guide