Understanding The Digital Port; Digital Control Port; Bi-Directional Digital I/O - Keysight Technologies BT2152B Operating And Service Manual

3 Operating the Analyzer

Understanding the Digital Port

Digital Control Port

Bi-Directional Digital I/O

Digital Input only
Fault Output
Inhibit Input
Fault/Inhibit System Protection
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.
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
Characteristics section.
Function
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.
FAULt Applies only to pins 1 and 2. Pin 1 functions as an isolated fault output. Pin 2 serves as the isolated common
for pin 1. The fault signal is true when a fault condition occurs on the instrument. 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 logic true signal at the pin disconnects all
channels from the cells.
Common Applies only to pin 8. Connected to ground.
In addition to the configurable pin functions, the signal polarity for each pin is also configurable.
Positive indicates a high level voltage at the pin. Negative indicates a low level voltage at the pin.
Bi-Directional Digital I/O
Each of the seven pins can be configured as general purpose bi-directional digital inputs and outputs.
The polarity of the pins can also be configured. Pin 8 is the signal common for the digital I/O pins. Data
is programmed according to the following bit assignments:
38
Description
Keysight BT2152A/B Operating and Service Guide