M/A-Com 19D902797G10, Руководство по обслуживанию

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TROUBLESHOOTING
Table 3 - Rated Power For MASTR III UHF Base Station
FREQUENCY
MHz
STANDARD
@J2
ADJUSTABLE
RANGE@J104
WITH
DUPLEXER
WITH
ISOLATOR
WITH
DUPLEXER
AND
ISOLATOR
450-470 110W 65-130W 75W 100W 70W
425-450 90W 55-110W 60W 82W 55W
403-425 90W 55-110W 60W 82W 55W
380-400 75W 45-90W 50W 68W 47W
410-430 90W 55-110W 60W 82W 55W
470-494 90W 55-110W 60W 82W 55W
492-512 90W 55-110W 60W 82W 55W
4.2 LOW PASS FILTER TEST PROCEDURE
This procedure is used to measure Insertion Loss and Harmonic Attenuation of Low Pass
Filters 19D902856G3 and G9. Refer to section 3.1.6 Low Pass Filter for filter
specifications.
4.2.1 Recommemded Test Equipment
Network Analyzer - Similar to HP8753B
•
•
•
Tracking Generator - Similar to HP8444A
Spectrum Analyzer - Similar to HP8567A
4.2.2 Test Set-Up and Procedure
A. Connect two RG400 cables (1ft) with type N connectors on both ends to the
input/output of the filter and to the input/output of the analyzer.
B. Calibrate the analyzer at the end of cables to cover 350-100 MHz for G3 or 450-1200
MHz for G9.
C. Measure Insertion Loss of the filter module at 375, 400, 425, 450 & 475 MHz for G3
or 470, 480, 490, 500 and 515 MHz for G9.
D. Measure Attenuation of the filter module at 750 and 1000 MHz for G3 or 940 and
1024 MHz for G9.
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