JDS Uniphase CellAdvisor JD780A Series, User Manual

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JD780A Series Analyzers
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Using Interference Analyzer
3.
Enter a value between 1 Hz to 3 MHz in 1-3 sequence by using the numeric keys.
4.
Select the unit: MHz , kHz , or Hz .
The RBW setting automatically changes to Manual .
5.
Press the VBW soft key.
6.
Enter a value by using the numeric keys.
7.
Select the unit: MHz , kHz , or Hz .
The VBW setting automatically changes to Manual .
The RBW or VBW value on the screen changes accordingly.
Table 11 VBW/RBW ratio example
RBW Ratio (VBW/RBW) VBW
30 kHz 1:1 30 kHz
1:0.3 10 kHz
1:0.1 3 kHz
1:0.03 1 kHz
1:0.01 300 Hz
1:0.003 100 Hz
Setting average
You can set the number of measurements to be averaged for the trace presentation. A maximum of
100 times of averaging can be set. When the averaging reaches to your setting, a new measurement
value replaces the measurement value in sequence from the earliest.
Procedure
1.
Press the BW/AVG hard key.
2.
Press the Average soft key.
3.
Enter a value between 1 and 100 as needed by using the numeric keys.
4.
Press the Enter soft key.
Setting sweep
The SWEEP hot key is used to set and control the sweep time, sweep mode, gated sweep settings,
and gated sweep on or off. This key is not available in the Dual Spectrum and Radar Chart modes.
Sweep time
You can set the sweep time automatically or manually. Manual setting allows you to set the sweep time
beyond an automatic setting.
Procedure
1.
Press the SWEEP hot key.
2.
Select the sweep time option, from the following choices: