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Appendix D Output On/Off Synchronization
100 Series N6700 User’s Guide
Synchronizing Output Turn-on Delays
Tutorial
All N6700 Power Modules that are installed in an Agilent N6700
mainframe exhibit a minimum delay offset that applies from the time
that a command to turn on the output is received until the output
actually turns on. If you specify a user-programmed turn-on delay,
this delay will be added to the minimum delay offset, resulting in a
turn-on delay that is actually longer than the one you programmed.
The minimum delay offset is shown in the following table.
Power Modules Options and Mode Minimum
Delay Offset
N673xB, N674xB, N677xA Without relays 32 ms
With relay option 760 58 ms
N6751A, N6752A Without relays 25 ms
With relay option 760 51 ms
N6753A, N6754A Without relays 18 ms
With relay option 760 44 ms
N6761A, N6762A Without relays 32 ms
With relay option 760 58 ms
Without relays; Current priority 23 ms
With relay option 760; Current priority 45 ms
To determine which power modules are installed in your mainframe,
select System\About\Module from the front panel. This identifies
the power module and the installed options. If N676xA power
modules are installed, send the OUTP:PMODE? query to determine if
Current priority mode has been set.
To determine the actual turn-on delay between the “on” event (such
as pressing the Output On key or sending an Output On command),
you must add the programmed turn-on delay to the minimum delay
offset as shown in the following example. In this example, if you
program delay values of 10 ms, 20 ms, 30 ms, and 40 ms for output
channels 1 through 4 respectively, the actual output delays will be 68
ms, 45 ms, 81 ms, and 72 ms for output channels 1 through 4.
To synchronize power modules with different minimum delay offsets
as shown above, you can specify a common delay offset parameter.
N6731B w/relays (1)
N6751A (2)
N6751A w/relays (3)
N6761A (4)
58 10
10
milliseconds
20 30 40 50 60 70 80
25
51
32
20
30
40
90
= internal delay offset
= programmed turn-on delay
ON