Daniels Electronics OSR-3H061, Инструкция по эксплуатации

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Enhanced FM Synthesizer Instruction Manual
IM10-OS3AH
39
GENERAL
OS(R/T)-3H enhanced synthesizer alignment is
simplifi ed by using a Type 84 subrack and RF
extender card/cable for providing receiver or
transmitter power and signal interconnection.
Alternately, a +9.5VDC may be directly
connected to a receiver or transmitter module
with the positive connection on pins B6/Z6
and the negative connection on pins B30/
Z30/B32/Z32. The receiver’s balanced audio
output (600Ω) is available at pins B26 and
Z26. The transmitter’s balanced audio output
(600Ω) is available at pins B18 and Z18.
REPAIR NOTE
The OS(R/T)-3H synthesizer employs a
large number of surface mount components.
Removal and/or replacement of surface
mount components should never be
performed using an ordinary soldering iron but
should only be performed at surface mount
rework and repair stations equipped with
Electrostatic Discharge (ESD) protection.
When removing Surface Mount Solder
Jumpers, it is recommended that a solder
wick braid be used in lieu of vacuum
type de-soldering tools to help prevent
damage to the printed circuit boards.
SYNTHESIZER
ALIGNMENT
RECOMMENDED TEST
EQUIPMENT
Synthesizer alignment requires the following test
equipment, or its equivalent:
Power supply-Reg9.5VDC
at 2 A. Phillips PM 2811 at 2 A. Phillips PM 2811
Oscilloscope/Multimeter-Fluke 97 Scopemeter Oscilloscope/Multimeter-Fluke 97 Scopemeter
Radio communications test set-
Marconi Instruments 2965A
It is recommended that the radio
communications test set be referenced to an
external high stability frequency source (WWVH,
GPS, Loran C) so that the OS(R/T)-3H internal
high stability local oscillator may be accurately
set to within its ±1 ppm frequency tolerance.