
4-26
ET User’s Guide
Using Instrument Functions
Using Markers
To Use Other Marker Functions
To Use Marker to
Center Frequency
The marker to center frequency function changes the analyzer's center
frequency to that of the active marker and limits the span if necessary. If
the markers are all off, and this function is selected, it first turns on
marker 1 at its previous setting or, if no previous setting, at the center
frequency (default).
1. Press
and then use the front panel knob or the numeric
keypad to move the marker to 200 MHz.
2. Press
and note that the
trace has now shifted and that the center frequency of the analyzer is
now 200 MHz.
To Use Marker to
Reference
The marker to reference function changes the value of the analyzer's
reference level to the amplitude value of the active marker. This function
does not change the reference position. If the markers are all off, and this
function is selected, it first turns on marker 1 at its previous setting or, if
no previous setting, at the center frequency (default).
1. Press
and then use the front panel knob or the numeric
keypad to move the marker to about
−
10 dB.
2. Press
and note that
the trace has now shifted up and that the marker is exactly on the
reference level.
To Use Marker to
Electrical Delay
The marker to electrical delay function allows you to mathematically
subtract or add enough line length to the receiver input to compensate
for the phase slope at the active marker position. This effectively flattens
the phase trace around the active marker. You can use this to measure
the electrical length or deviation from linear phase. To access this
marker function, press
.
See
in
Chapter 8, “Hardkey/Softkey Reference,”
more information.
See
“Compensating for Phase Shift in Measurement Setups” on
for more information on electrical delay.
MARKER
Marker Functions Marker
−
> Center
MARKER
Marker Functions Marker
−
> Reference
Marker Functions Marker
−
> Elec Delay
Electrical Delay
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 ...