Section 3: Functions and features
Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
3-24
077114601 / March 2019
Digital I/O lines
The following table describes the possible pin configurations for the digital line function and action.
Line mode
Available work mode
Available configurable lines
Trigger in
NA
Power supply, battery test,
battery simulator
Line 1
Meter complete
output
NA
Power supply
Line 2
Fault output
NA
Power supply, battery test,
battery simulator
Line 3
Digital Out
Sink<>Source
Hi V
Low V
Battery test, battery simulator
Line 2, 4 through 6
CC<>CV
End
Battery test
Full
Empty
Battery simulator
Digital In
Output On
Output Off
Battery test, battery simulator
Line 2, 4 through 6
Script Start
Script Stop
Battery test
Manual output high
NA
Power supply, battery test,
battery simulator
Line 1 through 6
Manual output low
NA
Power supply, battery test,
battery simulator
Line 1 through 6
Manual input
NA
Power supply, battery test,
battery simulator
Line 1 through 6
When you place a line in the trigger-in function, you can detect a pulse on this line. The trigger
latency is 5 µs. The minimum pulse width is 4 µs. The falling edge of the pulse generates a trigger-in
event.
When you place a line in the meter complete function, the line is pulled up to logic high (+5 V). When
a measurement is completed, the instrument generates a low pulse with the duration of 10 µs to
30 µs.
When you place a line in the fault output function, the line is pulled up to logic high (+5 V). When an
overprotection error or a reverse-sense-leads error occurs, the line is set to logic low (0 V). After you
clear the error from the front panel or using SCPI commands, the line is set to logic high. For more
information, refer to
(on page 2-103).
