Keysight Technologies N6900 Series, Operating And Service Manual

Page: 151 / 358

Programming the Digital Port
Bi-Directional Digital I/O
Digital Input only
Expression Output
External Trigger I/O
Fault Output
Inhibit Input
Fault/Inhibit System Protection
Output Couple
Digital Control Port
A Digital Control Port consisting of seven I/O pins is provided to access various control functions. Each
pin is user-configurable. The following control functions are available for the I/O pins. See
SCPI
Programming Reference for details on the SCPI commands to program the Digital Port.
The following table describes the possible pin configuration for the digital port functions. For a
complete description of the electrical characteristics of the digital control port, refer to the
Specifications section.
Function Description
DIO General-purpose ground-referenced digital input/output function. The output can
be set with [SOURce:]DIGital:OUTPut:DATA.
DINPut Digital input-only mode. The digital output data of the pin is ignored.
EXPRession<1-8> A user-defined expression drives the pin.
FAULt Applies only to pin 1. Pin 1 functions as an isolated fault output. The fault signal is
true when any output is in a protected state. Pin 2 serves as the isolated common
for pin 1. When pin 1 is set to the FAULt function, the instrument ignores any
commands to program pin 2. Queries of pin 2 will return FAULt. If pin 1 is
changed from FAULt to another function, pin 2 is set to DINPut.
INHibit Applies only to pin 3. When pin 3 is configured as an inhibit input; a true signal at
the pin will disable the output.
ONCouple Applies only to pins 4-7. The ONCouple pin synchronizes the output On state
between instruments. Only one pin can be configured as an ONCouple. The pin
functions as both an input and an output.
OFFCouple Applies only to pins 4-7. The OFFCouple pin synchronizes the output Off state
between instruments. Only one pin can be configured as an OFFCouple. The pin
functions as both an input and an output.
Keysight N6900/N7900 Series Operating and Service Guide 151
4 Using the Advanced Power System