Keysight Technologies N6700 User Manual

4 Operating the Power System
88 Keysight N6700 User’s Guide
Front Panel:
SCPI Command:
Select
Protect\OVP
.
Enter a value in the OVP level
box and press Select.
For J01 units, enter a value in
the Tracking OVP Offset box
and check the Enable box.
Then press Select.
To set an OVP of 10 V for output 1:
VOLT:PROT 10,(@1,2)
For Models N678xA SMU:
VOLT:PROT:REM 10,(@1,2)
To enable tracking OVP for output 1:
VOLT:PROT:TRAC ON,(@1)
To set the tracking offset for output 1:
VOLT:PROT:TRAC:OFFS 2,(@1)
Keysight Models N678xA SMU also have a back-up local OVP function. Refer
to “Over-voltage Protection” in chapter 2 for a description of the feature.
Additionally, for Keysight Model N6784A, you can program a negative over-
voltage value. Enter the value in the -OVP
field.
Set the Over-Current Protection
When over-current protection is enabled, the power system turns off the
output if the output current reaches the current limit setting and
transitions from CV to CC mode.
Front Panel:
SCPI Command:
Select
Protect\OCP
.
Check Enable OCP and press Select.
To enable OCP for outputs 1 and 2:
CURR:PROT:STAT 1,(@1,2)
You can also specify an OCP delay to prevent momentary CV-to-CC
status changes from tripping the over-current protection. The power
system may momentarily transition into CC mode when it is turned on,
when an output value is programmed, or when the output load is
connected. In most cases these temporary conditions would not be
considered an over-current protection fault, and having an OCP
condition disable the output when the CC status bit is set would be a
nuisance. Specifying an OCP delay lets the OCP circuit ignore the CC
status bit during the specified delay period. Once the OCP delay time
has expired and if the CC mode persists, the output will shut down.
The delay can be programmed from 0 to 0.255 seconds. You can specify
if the OCP delay timer is started by any transition of the output into CC
mode, or only at the end of a settings change in voltage, current, or
output state.
Front Panel:
SCPI Command:
Select
Protect\OCP
.
Enter a delay value and press Select.
Check "Start delay on CC" to start
the delay timer by ANY output
transition into CC mode. Otherwise,
the delay timer will only be started
by a settings change in voltage,
current, or output state.
To specify a 10 millisecond delay:
OUTP:PROT:DEL 0.01,(@1)
To start the delay timer by ANY
output transition into CC mode:
CURR:PROT:DEL:STAR CCTR, (@1)
To start the delay timer by a settings
change in voltage current or output:
CURR:PROT:DEL:STAR SCH, (@1)

Keysight Technologies N6700 Specifications

General

Brand	Keysight Technologies
Model	N6700
Category	Power Supply
Language	English