3-1
Chapter 3
LOCAL OPERATION
Contents
About this chapter.......................................................................................................................... 3-3
Front panel layout ..........................................................................................................................3-4
Rear panel controls and connectors ............................................................................................... 3-8
Getting started................................................................................................................................ 3-9
(Applying power and selecting test modes)............................................................................ 3-9
Test mode screens and menus...................................................................................................... 3-10
HELP/SETUP ....................................................................................................................... 3-11
Bar charts ..................................................................................................................................... 3-19
Spectrum analyzer........................................................................................................................ 3-19
Oscilloscope................................................................................................................................. 3-19
Using the test modes................................................................................................................... 3-21
Brief descriptions......................................................................................................................... 3-21
Tx test (transmitter testing).......................................................................................................... 3-23
Overview............................................................................................................................... 3-23
Connections .......................................................................................................................... 3-24
Setting up .............................................................................................................................. 3-25
Making measurements .......................................................................................................... 3-32
External attenuators .............................................................................................................. 3-33
Rx test (receiver testing) .............................................................................................................. 3-38
Overview............................................................................................................................... 3-38
Connections .......................................................................................................................... 3-39
Setting up .............................................................................................................................. 3-40
AF input level measurement ................................................................................................. 3-44
Making measurements .......................................................................................................... 3-47
Dx test (duplex testing)................................................................................................................ 3-53
Overview............................................................................................................................... 3-53
Spectrum analyzer........................................................................................................................ 3-55
Overview............................................................................................................................... 3-56
Setting up .............................................................................................................................. 3-56
AF test (audio frequency testing)................................................................................................. 3-63
Overview............................................................................................................................... 3-63
Setting up .............................................................................................................................. 3-64
Input level measurement....................................................................................................... 3-64
Input filtering ........................................................................................................................ 3-64
Distortion measurement........................................................................................................ 3-65
Incremental adjustment keys........................................................................................................ 3-67
General.................................................................................................................................. 3-67
Assigning .............................................................................................................................. 3-68
Use within spectrum analyzer mode ..................................................................................... 3-68
Tones............................................................................................................................................ 3-69
Tones sub-mode.................................................................................................................... 3-69
Observing tones signals in other test modes......................................................................... 3-69
Signal routing........................................................................................................................ 3-70
RF input attenuators.............................................................................................................. 3-70
Sequential tones ........................................................................................................................... 3-71
Overview............................................................................................................................... 3-71
Testing sequential tone receivers.......................................................................................... 3-71
Testing sequential tone transmitters...................................................................................... 3-74
CTCSS ......................................................................................................................................... 3-76
Output level ..........................................................................................................................3-76
Tone selection....................................................................................................................... 3-76
Tone frequency shift ............................................................................................................. 3-76
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