microseconds for positive-going signals, and 10 microseconds for negative-going signals. The pin’s
polarity setting determines which edge generates a trigger-in event.
When configured as a trigger output, the designated trigger pin will generate a 10 microsecond-wide
pulse when a Trigger Out occurs. Depending on the polarity setting, it can be either positive-going
(rising edge) or negative-going (falling-edge) when referenced to common.
Front Panel Menu Reference SCPI Command
Select System\IO\DigPort\Pins.
Select a pin in the Pin field.
In the Function field, select either the Trig In or
Trig Out function.
In the Polarity field, select Positive or Negative.
To select the trigger output function for pin 1:
DIG:PIN1:FUNC TOUT
To select the trigger input function for pin 2:
DIG:PIN2:FUNC TINP
To select the pin polarity:
DIG:PIN1:POL POS
DIG:PIN2:POL NEG
Fault Output
Pins 1 and 2 can be configured as a fault-output pair. The Fault Output function enables a fault
condition on any channel to generate a protection fault signal on the digital port. Refer to Protection
Functions for a list of protection signals that will generate a fault.
Both pins 1 and 2 are dedicated to this function. Pin 1 is the Fault output; pin 2 is the common for pin 1.
This provides for an optically-isolated output. The polarity of pin 1 can also be configured. Note that
the Fault output signal remains latched until the fault condition is removed and the protection circuit is
cleared. as explained under Clearing Protection Functions.
Pin 2's selected function is ignored. Pin 2 should be connected to the ground of the
external circuit.
Front Panel Menu Reference SCPI Command
Select System\IO\DigPort\Pins.
Select pin 1. In the Function field, select Fault
Out.
In the Polarity field, select Positive or Negative.
To configure the Fault function:
DIG:PIN1:FUNC FAUL
To select the pin polarity:
DIG:PIN1:POL POS
DIG:PIN1:POL NEG
Inhibit Input
Pin 3 can be configured as a remote inhibit input. The Inhibit Input function lets an external input signal
control the output state of all the output channels in the mainframe. The polarity of pin 3 can also be
configured. The input is level triggered. The signal latency is 5 microseconds. Pin 8 is the common for
pin 3.
Keysight N6700C Operating and Service Guide 151
4 Operating the Power System
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