HP 8711C User Manual page 345

Front/Rear Panel
Connectors
USER TTL
IN/OUT
8-6
深圳市盛腾仪器仪表有限公司
Measurement Channel 1 Meeturement Channel 2 limit Test TTL Output
If limit testing is turned off on both measurement channels,
this connector also serves as a user-delined TTL input
and output that can be set and read from IBASIC or SCPI
(HP-IB). See Chapter 7, "Automating Measurements," for
more information.
This rear panel female BNC connector can be used in three
different ways. Define its use by pressing
selection.
The default use for this connector provides a bidirectional
l
open-collector TTL signal which can be set or read from
which you can drive low, but must not drive high, since
the analyzer also drives it. See Chapter 7, "Automating
Measurements, II for more information.
This connector can also be used with an external switch
l
to automate softkey presses. See "User-Defined IBEGIN)
Key Menu" and "Using Fast Recall with a Switch" in
Chapter 7.
Lastly, this connector can be conligured for use as a sweep
l
out connector. When configured this way, the output is
driven high during a sweep.
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