Operating instructions

5-1
Chapter 5
ACCEPTANCE TESTING
Contents
Introduction....................................................................................................................................5-2
Results tables ..........................................................................................................................5-2
Before starting ........................................................................................................................5-2
Test equipment........................................................................................................................5-3
RF output tests ...............................................................................................................................5-4
Carrier frequency accuracy..................................................................................................... 5-4
RF output level .......................................................................................................................5-6
ALC linearity...................................................................................................................5-6
BNC output mode............................................................................................................5-7
Attenuator accuracy.........................................................................................................5-7
Alternative attenuator functional check...........................................................................5-8
Spectral purity.........................................................................................................................5-9
Harmonics, spurious, RF carrier leakage, residual FM ................................................... 5-9
Amplitude modulation ..........................................................................................................5-11
Frequency modulation ..........................................................................................................5-12
AF output tests.............................................................................................................................5-13
Audio generator output level ................................................................................................5-13
Audio generator distortion....................................................................................................5-14
Audio generator frequency ...................................................................................................5-15
AF input tests...............................................................................................................................5-16
Audio frequency meter .........................................................................................................5-16
Audio voltmeter....................................................................................................................5-17
AF distortion & SINAD meter..............................................................................................5-18
RF input tests ...............................................................................................................................5-19
Modulation analyzer - FM....................................................................................................5-19
Modulation analyzer - AM ...................................................................................................5-22
RF frequency meter ..............................................................................................................5-24
RF spectrum analyzer ........................................................................................................... 5-26
RF broadband power meter...................................................................................................5-28
Signalling systems .......................................................................................................................5-29
Acceptance Test Results Tables................................................................................................5-31
List of figures
Fig. 5-1 Carrier frequency accuracy .............................................................................................5-4
Fig. 5-2 RF level set up.................................................................................................................5-6
Fig. 5-3 RF level set up.................................................................................................................5-7
Fig. 5-4 Attenuator functional check ............................................................................................5-8
Fig. 5-5 Carrier harmonics & spurious check...............................................................................5-9
Fig. 5-6 Residual FM checks ......................................................................................................5-10
Fig. 5-7 Internal AM accuracy checks........................................................................................5-11
Fig. 5-8 Internal FM accuracy checks.........................................................................................5-12
Fig. 5-9 Audio generator level accuracy checks.........................................................................5-13
Fig. 5-10 Audio generator signal purity checks..........................................................................5-14
Fig. 5-11 Audio frequency meter check......................................................................................5-16
Fig. 5-12 Audio voltmeter level accuracy checks.......................................................................5-17
Fig. 5-13 Modulation meter FM ................................................................................................. 5-20
Fig. 5-14 Modulation analyzer - AM.......................................................................................... 5-22
Fig. 5-15 RF frequency meter.....................................................................................................5-24
Fig. 5-16 RF spectrum analyzer checks......................................................................................5-26
Fig. 5-17 RF broadband power meter checks .............................................................................5-28