Справочник Пользователя для HP Cell Phone Accessories E6380-90019
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Chapter 5
Analog Measurements - Screens and Control Fields
Mod In To
No Pk/Avg
Mod In To
This modulation input field defines how an external modulation source
is used with the RF generator. Two fields are used:
is used with the RF generator. Two fields are used:
• The upper field determines whether the ANALOG MODULATION
IN signal is set for AM or FM modulation of the RF GENERATOR.
• The lower field sets the modulation sensitivity. For instance, if
FM
(/Vpk)
is selected for the upper field, and you set the lower field to
1.0000 kHz
, the RF generator will deviate 1 kHz for every 1 Volt
peak at the ANALOG MODULATION IN connector.
Screens on which this field is displayed
RF GENERATOR
No Pk/Avg
This field performs two functions:
Pk Hold
(peak hold) prevents the spectrum analyzer from erasing the
previous trace each time it sweeps. This causes the traces to ‘build-up’
on the screen until
on the screen until
Off
,
No Pk/Avg
or measurement reset (using
Meas
Reset
(press and release the
Shift
key, then the
Hold
key) is performed.
This allows the capture of transient signals that are not displayed long
enough to view during normal operation.
enough to view during normal operation.
Avg 1
through
100
(video averaging) enables the spectrum analyzer to
display a trace representing the average of several measurements. The
number of samples used for measurement averaging range from 1 to
100 (see below).
number of samples used for measurement averaging range from 1 to
100 (see below).
No Pk/Avg
and
Off
function identically.
Off
is
provided to maintain backwards compatibility with earlier firmware
and software.
and software.
•
No Pk/Avg
means that peak hold and video averaging are off.
•
Pk Hold
means that peak hold is on.
•
Avg [n]
enables video averaging over [n] measurements,
where n = 1, 2, 3, 4, 5, 10, 20, 50, or 100
•
Off
means that peak hold and video averaging are off.
Operating Considerations
After capturing the desired signal, you can use the hold function (press
Hold
key) to prevent additional signals from building-up on the display.
Screens on which this field is displayed
SPEC ANL: auxiliary controls menu
Main Menu