To Use Other Marker Functions - HP 8712ET User Manual

To Use Marker to
Center Frequency
To Use Marker to
Reference
To Use Marker to
Electrical Delay
Using Instrument Functions
Using Markers

To Use Other Marker Functions

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
MARKER
keypad to move the marker to 200 MHz.
2. Press Marker Functions
trace has now shifted and that the center frequency of the analyzer is
now 200 MHz.
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 MARKER
keypad to move the marker to about −10 dB.
2. Press Marker Functions
the trace has now shifted up and that the marker is exactly on the
reference level.
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 Electrical Delay
more information.
See "Compensating for Phase Shift in Measurement Setups" on
page 5-17 for more information on electrical delay.
4-26
and then use the front panel knob or the numeric
Marker
and then use the front panel knob or the numeric
Marker
Marker Functions
in Chapter 8, "Hardkey/Softkey Reference,"
−
> Center and note that the
−
> Reference and note that
−
Marker > Elec Delay
ET User's Guide
.
for