Model 6517B Electrometer Reference Manual
Section 14: SCPI command reference
6517B-901-01 Rev. C / August 2015
14-89
Digital output commands
[:LEVel] <b>
This command is used to control the digital output of lines #1 through #4.
Usage
:SOURce:TTL[1]:[LEVel] <b>
:SOURce:TTL2:[LEVel] <b>
:SOURce:TTL3:[LEVel] <b>
:SOURce:TTL4:[LEVel] <b>
[:LEVel]?
<b>
1 or ON:
Set output line true
0 or OFF:
Set output line false
Details
These commands are used to set the logic levels for the digital output port. The actual level (high or
low) of a digital output line depends on its programmed polarity. If the polarity of a line is active-high,
then that line is high when it is set to be true (
1
or
ON
), and low when it is set to be false (
0
or
OFF
).
Conversely, if polarity is active-low, the line is low when it is set to be true, and high when it is set to
be false.
If a
LIMITS
control is enabled (
LOLIM1
or
2
,
HILIM1
or
2
—
High
,
Low
, or
Pass
), this command
does not check or change the output status.
Also see
OUTPut subsystems
(on page 14-55)
