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L T R A V I E W
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E L E M E T R Y
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A N U A L
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A I N T E N A N C E
Transmitter Field Alignment Procedures
These test procedures describe the field alignment and
adjustments for these RF PCBAs:
•
670-0939-xx, UHF wideband (90343/90347)
•
670-0917-xx, VHF narrowband (90341-16)
•
670-1283-xx, UHF narrowband (90341-05)
•
UHF narrowband (91341-09)
•
UHF wideband (91343-09/91347-09)
Definitions
The following terms are used in these alignment procedures:
•
DMM
— digital multimeter
•
P-P
— peak-to-peak
•
PWM
— pulse width modulation
•
UUT
— unit under test
66
Gasket, O-ring, .109 ID × .040CS
2
348-0634-00
Table 4-5 Parts List for the 91343 (Continued)
Item
Description
Quantity Part Number
Cautions:
•
These procedures should only be performed by qualified
service personnel. Failure to follow the outlined procedures or
failure to use the specified test equipment may result in faulty
operation of the telemetry transmitter.
•
No alignment is required for P/N 670-1253-xx, UHF narrowband
(91341) PCBA.
•
No alignment is required for P/N 670-1358-xx, UHF wideband
(91343/91347) PCBA.
