HP Cell Phone Accessories E6380-90019 Manuale Utente
Chapter 5
153
Analog Measurements - Screens and Control Fields
Squelch
Squelch
Squelch
This setting determines the squelch operation when demodulating FM,
AM, or SSB signals. Three settings are available:
AM, or SSB signals. Three settings are available:
•
Pot
uses the front-panel SQUELCH knob for squelch level
adjustment.
•
Open
disables squelch operation.
•
Fixed
sets the squelch to a fixed level, disabling the front-panel
SQUELCH knob control.
Operating Considerations
Most measurements are not displayed on the screen if the incoming
signal falls below the squelch level (with the exception of
signal falls below the squelch level (with the exception of
TX Power
).
The measurements are replaced by four dashes (- - - -) to indicate they
have been squelched.
have been squelched.
Oscilloscope measurements are also disabled when the signal has been
squelched.
squelched.
Spectrum analyzer measurements are not affected by the squelch
setting (although squelch still affects whether the demodulated signal
can be heard while viewing the RF signal).
setting (although squelch still affects whether the demodulated signal
can be heard while viewing the RF signal).
Trying to read a squelched measurement using HP-IB will cause your
program to halt until the squelch is either turned down, a measurement
is made, or until a program time-out aborts the measurement.
program to halt until the squelch is either turned down, a measurement
is made, or until a program time-out aborts the measurement.
Screens on which this field is displayed
RF ANALYZER
Main Menu