Changing Frequency - Alcatel MDR-8000 User Manual

CHANGING FREQUENCY

5.9
Crystals are soldered and tuned up in a crystal oscillator subboard at
the factory.
Changing frequencies requires changing the crystal on the crystal oscillator subboard in
the transmitter and receiver modules. Changing out the crystal requires tuning the crystal
oscillator subboard. Tuning the crystal oscillator subboard is a factory procedure.
An RF frequency change of ±2 MHz requires re-tuning the diplexer. Re-tuning the diplexer
is a factory procedure.
CLEANING
5.10
Do not use acid, alcohol, or brushes to clean modules because damage
to the silkscreen labeling and antistatic coating can result. Cleaning
should be confined to the removal of dust and dirt using a damp cloth.
Cleaning should normally be confined to the removal of dust and dirt using a soft bristled
(natural fiber) brush and a low velocity blower (such as a vacuum cleaner with a plastic
blower nozzle). Do not use acid or synthetic bristled brushes to clean modules that contain
electrostatic-sensitive components.
5-22
CAUTION
Possibility of
Service
Interruption
CAUTION
Possibility of
Service
Interruption