Agilent Technologies N6751A User Manual page 48

4 Operating the Power System
Set the Over-Voltage Protection
Set the Over-Current Protection
Clear Output Protection Functions
48
However, when outputs of different module types are sequenced,
there may be an additional offset of a few milliseconds from one
output to another. This offset is the same for each module type and is
repeatable. Once you have characterized this offset, using an
oscilloscope for example, you can adjust the programmed delays to
compensate for the offset and give the desired output sequencing.
Outputs within the same module type can also have an offset if one
model has output relays (Option 761) and another does not. These
offsets are also repeatable and can be compensated for by adjusting
the programmed delay values.
The over-voltage protection function turns off the affected output if
the output voltage reaches the programmed over-voltage limit.
Front Panel:
Select Protect\OVP.
Enter a value in the OVP level box
and press Select.
When over-current protection is enabled, the power system will turn
off its output if the output current reaches the current limit setting.
Front Panel:
Select Protect\OCP.
Check the OCP enable box and
press Select.
If an over-voltage, over-current, over-temperature, inhibit signal, or a
power-fail condition occurs, the power system turns off the affected
output channel. The PROT annunciator on the front panel will be on.
To clear the protection function and restore normal operation, first
remove that condition that caused the protection fault.
Then, clear the protection function as follows:
Front Panel:
Select Protect\Clear.
Select the Clear button.
SCPI Command:
To set the OVP level for outputs 1 and
2 to 10 V:
VOLT:PROT 10,(@1,2)
SCPI Command:
To enable OCP for outputs1 and 2:
CURR:PROT:STAT 1,(@1,2)
SCPI Command:
To clear a protection fault on output1:
OUTP:PROT:CLE(@1)
Series N6700 User's Guide