HP 8712ES User Manual page 286

Front/Rear Panel
Connectors
Measurement
Channel 1
Pass
Pass
Fail
If limit testing is turned off for both measurement
channels, this connector also serves as a user-defined
TTL input and output that can be set and read from
IBASIC or SCPI (HP-IB). See the Automating
Measurements User's Guide Supplement for more
information.
USER TTL
IN/OUT This rear panel female BNC connector can be used in
three different ways. Define its use by pressing
SYSTEM OPTIONS
User TTL Config
selection.
• The default use for this connector provides a
• This connector can also be used with an external
• Lastly, this connector can be configured for use as a
7-6
Measurement
Channel 2
Pass
Fail
Pass
, and then making the appropriate
bidirectional open-collector TTL signal which can be
set or read from IBASIC or SCPI (HP-IB). This is an
open-collector signal which you can drive low, but
must not drive high, since the analyzer also drives
it. See the Automating Measurements User's Guide
Supplement for more information.
switch to automate softkey presses. See
"User-Defined BEGIN Key Menu" and "Using Fast
Recall with a Switch" in the Automating
Measurements User's Guide Supplement.
sweep out connector. When configured this way, the
output is driven high during a sweep.
Limit Test TTL
Output
High (pass)
Low (fail)
Low (fail)
System Config
ES User's Guide