Agilent Technologies Series N6700 User Manual page 65

Sequence Multiple Outputs
Program the Output Relays
Series N6700 User's Guide
Turn-on and turn-off delays control the power-up and power-down
sequencing of the output channels in relation to each other.
Front Panel:
Press the Channel key to select an
output. Then select
Output\Sequence\Delay.
Select either Turn-on or Turn-off.
Enter a delay in seconds, then
press Select.
Select System\Preferences\Keys.
Check On/Off affects all channels.
Output turn-on characteristics vary across the power module types -
DC Power, Autoranging, Precision, and Source/Measure. When
output channels of the same module type are programmed off-to-on,
output sequencing is determined by the programmed turn-on delays.
When outputs of different module types are sequenced, there may be
additional offsets of a few milliseconds from one output to another
that must be accounted for. Specifying a common delay offset assures
that the programmed turn-on delays will be synchronized to start at
the completion of the common delay offset. Select the delay offset of
the slowest power module in the mainframe and use that as the
common delay offset. (See Appendix D for more information.)
Front Panel:
In the front panel menu, select
Output\Sequence\Couple.
The Max delay offset for this frame
field displays the delay offset of the
slowest power module in the frame.
Enter this value into the Delay offset
field in milliseconds; then press
Select.
Output relay availability and options are described in Chapter 1
under "Model Differences". Option 761 provides double-pole, double-
throw relays that disconnect both the output and sense terminals.
Option 760 is the same as option 761 but adds output reversal relays.
Note that a small AC network is always present across the output
terminals.
If you have Option 761 installed, the normal operating mode of the
relay is to open and close as the output is turned on or off. The relays
are only opened or closed when the output is at a safe state (zero
voltage; zero current). Note however, that you can program the
output state on or off while leaving the relay state unchanged.
Operating the Power System 4
SCPI Command:
To program a 50 millisecond turn-on
delay for output 1 and a 100
millisecond turn-on delay for output 2:
OUTP:DEL:RISE .05,(@1)
OUTP:DEL:RISE .1,(@2)
To program a 200 millisecond turn-off
delay for outputs 3 and 4:
OUTP:DEL:FALL .2,(@3,4)
SCPI Command:
To query the delay offset of the
slowest power module in the
mainframe (the maximum delay
offset) in seconds:
OUTP:COUP:MAX:DOFF?
To specify the common delay offset
for the mainframe in seconds:
OUTP:COUP:DOFF .051
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