Keithley 2002

IEEE-488 Reference
3-85
3.16 :OUTPut subsystem
The OUTPut subsystem is used to set polarities for the digital output port. Commands in this
subsystem are summarized in Table 3-8.
:LSENse <name>
:OUTPut:TTL[1]:LSENse <name> Set polarity of line #1
:OUTPut:TTL2:LSENse <name> Set polarity of line #2
:OUTPut:TTL3:LSENse <name> Set polarity of line #3
:OUTPut:TTL4:LSENse <name> Set polarity of line #4
<name> = AHIGh Set polarity of specified line to active high.
ALOW Set polarity of specified line to active low.
:LSENse? Query polarity of specified line
These commands are used to set the polarity of the digital output lines. When set for active high
(AHIGh) polarity, the specified output line is true (ON) when the output level is high. The out-
put line is false (OFF) when the output level is low. When set for active low (ALOW) polarity,
the output line is true (ON) when the output level is low. The output line is false (OFF) when
the output level is high.
The logic levels (true or false) of the digital output lines are set from the SOURce Subsystem
(see paragraph 3.19).
PRINT #1, "output 16; :outp:ttl:lsen alow; lsen?" ' Set line #1 to ALOW
PRINT #1, "enter 16" ' Get response message from
2002
Parameters
Query
Description
Program fragment