Chapter 5
Using Interference Analyzer
126
JD700B Series User’s Guide
Figure 54 Interference measurement in dual spectrogram view (on 28 GHz downconverter)
RSSI
The Received Signal Strength Indicator (RSSI) is a multi-signal tracking metric that is particularly useful for
measuring power-level variations over time. The RSSI measurement lets you assign power limit line for
audible alarms and increase alarm counters every time a signal exceeds a defined limit line. For long-term
analysis, the spectrogram and RSSI measurements can be automatically saved into an external USB
memory. Post-analysis can be performed with JDViewer application software.
Setting measure setup
Procedure
1
Configure test parameters as described in the “Configuring test parameters” on page 112.
2
Press the
MEASURE SETUP
hot key.
3
To set up the alarm parameters, complete the following steps:
Press the
Alarm
soft key.
Press the
Alarm at
soft key and select the marker number: M1 to M6.
Press the
Limit Line
soft key to set a threshold for the alarm.
Enter a value by using the numeric keys. You can also use the rotary knob.
Press the
dBm
soft key.
Toggle the
Alarm
soft key between
On
and
Off
to turn the alarm feature on or off.
Optional
. Press the
Volume
soft key and adjust the volume.
4
To set up the AM/FM audio demodulation, complete the following steps:
Press the
AM/FM Audio Demod
soft key.
Toggle the
Audio Demod
soft key between
On
and
Off
to turn the AM/FM audio
demodulation on or off.
Press the
Demod at
soft key, and then select the marker number for the frequency to be
demodulated.
NOTE
For the alarm and AM/FM audio demodulation, you must set the marker(s) first by using
the
MARKER
hard key as these features use the marker position to sound alarm or
demodulate. See “Using marker” on page 63 for more information.
Press the
Demod Mode
soft key, and then select the demodulation mode:
AM
,
FM
, and
CW
.
Press the
Dwell Time
soft key, and then turn the rotary knob to set the demodulation
Содержание CellAdvisor JD700B Series
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