
ES User’s Guide
5-19
Optimizing Measurements
Compensating for Phase Shift in Measurement Setups
To use the port extension feature, press
. When port extension is
turned on, you can add delay independently to both ports.
To add delay between PORT 1 and your DUT, press
,
and enter the delay value.
To add delay between PORT 2 and your DUT, press
,
and enter the delay value.
TIP
A good way to know when you have added enough delay is to connect a
short in place of the DUT. Adjust the port extension until the phase
response is flat. (Remember that most short-circuit standards have a
nonzero delay, so adjusting delay using this method will result in a delay
error equal to two times the short delay.)
The delay values that you enter will be automatically applied
appropriately to both transmission and reflection measurements. For
example, when measuring S
11
, the port 1 extension delay is applied
twice. When measuring S
21
, the port 1 extension delay and the port 2
extension delay are each applied once.
CAL
More Cal
Port Extensions Port Ext's on OFF
Port 1 Extension
Port 2 Extension
Summary of Contents for HP 8712ES
Page 8: ...viii ES User s Guide ...
Page 17: ...ES User s Guide 1 1 1 Installing the Analyzer ...
Page 34: ...1 18 ES User s Guide Installing the Analyzer Preventive Maintenance ...
Page 35: ...ES User s Guide 2 1 2 Getting Started ...
Page 52: ...2 18 ES User s Guide Getting Started Performing the Operator s Check ...
Page 53: ...ES User s Guide 3 1 3 Making Measurements ...
Page 135: ...ES User s Guide 4 1 4 Using Instrument Functions ...
Page 159: ...ES User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Page 165: ...ES User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Page 224: ...4 90 ES User s Guide Using Instrument Functions Using an External VGA Monitor ...
Page 225: ...ES User s Guide 5 1 5 Optimizing Measurements ...
Page 246: ...5 22 ES User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Page 247: ...ES User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Page 281: ...ES User s Guide 7 1 7 Front Rear Panel ...
Page 306: ...7 26 ES User s Guide Front Rear Panel Line Module ...
Page 307: ...ES User s Guide 8 1 8 Hardkey Softkey Reference ...
Page 410: ...8 104 ES User s Guide Hardkey Softkey Reference Z ...
Page 411: ...ES User s Guide 9 1 9 Specifications ...
Page 469: ...ES User s Guide 10 1 10 Safety and Regulatory Information ...
Page 475: ...ES User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Page 476: ...10 8 ES User s Guide Safety and Regulatory Information Regulatory Information ...
Page 477: ...ES User s Guide 11 1 11 Factory Preset State and Memory Allocation ...