Keysight Technologies 3458A Guide D'utilisation page 265

polarity
Specifies the polarity of the EXTOUT signal. The choices are:
polarity
parameter
NEG
POS
Power-on polarity = NEG.
Default polarity = NEG.
Remarks
– All events except APER generate a 1 µs pulse on the EXTOUT connector. If
– When a status event sets the SRQ bit in the status register, that bit remains set
– Query command: The EXTOUT? query command returns two responses
– Related commands: NRDGS, SRQ, STB?, SWEEP, TBUFF
Example
OUTPUT 722;"EXTOUT APER" !SETS EXTOUT EVENT TO APERTURE WAVEFORM
Keysight 3458A User's Guide
Numeric
query equiv.
0
1
APER is selected, the A/D's aperture waveform is output directly. The leading
edge of the EXTOUT signal is the response to the event. Refer to
Signal in Chapter 4 for a detailed description of the above events.
until cleared (CSB command, for example). When specified, the EXTOUT SRQ
pulse occurs whenever any status event occurs that has been enabled to
assert SRQ (RQS command). The EXTOUT SRQ pulse does not necessarily
occur whenever the SRQ bit is set; it occurs whenever an enabled status event
occurs.
separated by a comma. The first response indicates the currently specified
EXTOUT event. The second response indicates the polarity. Refer to
commands near the front of this chapter for more information.
Description
Generates a low-going TTL signal
Generates a high-going TTL signal
Command Reference
The EXTOUT
Query
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