
7-6
ET User’s Guide
Front/Rear Panel
Connectors
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
, and then making the appropriate
selection.
• The default use for this connector provides a
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.
• This connector can also be used with an external
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.
• Lastly, this connector can be configured for use as a
sweep out connector. When configured this way, the
output is driven high during a sweep.
Measurement
Channel 1
Measurement
Channel 2
Limit Test TTL
Output
Pass
Pass
Fail
Pass
Fail
Pass
High (pass)
Low (fail)
Low (fail)
SYSTEM OPTIONS
System Config
User TTL Config
Summary of Contents for HP 8712ET
Page 8: ...viii ET User s Guide ...
Page 17: ...ET User s Guide 1 1 1 Installing the Analyzer ...
Page 34: ...1 18 ET User s Guide Installing the Analyzer Preventive Maintenance ...
Page 35: ...ET User s Guide 2 1 2 Getting Started ...
Page 52: ...2 18 ET User s Guide Getting Started Performing the Operator s Check ...
Page 53: ...ET User s Guide 3 1 3 Making Measurements ...
Page 118: ...3 66 ET User s Guide Making Measurements Measuring Impedance Magnitude ...
Page 119: ...ET User s Guide 4 1 4 Using Instrument Functions ...
Page 143: ...ET User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Page 149: ...ET User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Page 207: ...ET User s Guide 5 1 5 Optimizing Measurements ...
Page 226: ...5 20 ET User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Page 227: ...ET User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Page 266: ...6 40 ET User s Guide Calibrating for Increased Measurement Accuracy Checking the Calibration ...
Page 267: ...ET User s Guide 7 1 7 Front Rear Panel ...
Page 292: ...7 26 ET User s Guide Front Rear Panel Line Module ...
Page 293: ...ET User s Guide 8 1 8 Hardkey Softkey Reference ...
Page 395: ...ET User s Guide 9 1 9 Specifications ...
Page 397: ...ET User s Guide 9 3 Specifications System Performance ...
Page 443: ...ET User s Guide 10 1 10 Safety and Regulatory Information ...
Page 449: ...ET User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Page 450: ...10 8 ET User s Guide Safety and Regulatory Information Regulatory Information ...
Page 451: ...ET User s Guide 11 1 11 Factory Preset State and Memory Allocation ...