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)
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