Keysight Technologies N6700C Serie Guide D'utilisation page 156

Set the Over-Power Protection
For models N679xA
power exceeds 110% of the module's power rating. You can program an over-power protection delay
to prevent the over-power protection function from being triggered during the delay time. This
prevents momentary input power spikes from triggering the over-power protection. The delay can be
programmed from 0 to 0.255 seconds.
Front Panel Menu Reference
Select Protect\OPP
Check Enable to enable OPP. Enter a delay value.
Then press Select.
Couple Output Protection
Protection coupling lets you disable all output channels when a protection condition occurs on a
single output channel. To couple output protection:
Front Panel Menu Reference
Select Protect\Coupling
Check Enable Coupling. Then press Select.
Query the Over-Temperature Margin
You can query the margin remaining before the over-temperature trips and shuts down the output.
The temperature margin is the minimum difference between the internal temperature sensors and the
fixed over-temperature trip level. The margin is returned in degrees Celsius.
Front Panel Menu Reference
Select Protect\OT
Displays over-temperature margin. Press Select.
Set the Oscillation Protection
This information applies to Keysight Models N678xA SMU only.
If open sense leads or capacitive loads outside the allowable range cause the output to oscillate, the
oscillation protection function detects the oscillation and latches the output off. The condition is
annunciated on the front panel by the OSC status annunciator.
Keysight N6700C Series User's Guide
only, the over-power protection will turn the output off if the input
SCPI Command
To enable over-power protection:
POW:PROT:STAT ON, (@1)
To specify a 10 millisecond delay:
POW:PROT:DEL 0.01, (@1)
SCPI Command
To enable output protection coupling:
OUTP:PROT:COUP ON
SCPI Command
To query the over-temperature margin:
OUTP:PROT:TEMP:MARG? (@1)
4 Operating the Power System
155