Radio Information; Transmitter Alignments; Figure 6-4. Radio Information Screen - Motorola APX 5000 Service Manual

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6.4

Radio Information

Figure 6-4 shows a typical Radio Information screen. This screen is informational only and cannot be
directly changed.
6.5

Transmitter Alignments

6.5.1 Reference Oscillator Alignment
Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will
result not only in poor operation, but also in a misaligned radio that will interfere with other users
operating on adjacent channels. For this reason, the reference oscillator should be checked every
time the radio is serviced, or once a year, whichever comes first. The frequency counter used for this
procedure must have a stability of 0.1 ppm (or better). Also, checking this parameter when the
product is placed in service is especially important if the product has been in storage for a significant
period of time (6 months or more) between being shipped from the factory and commissioned for
service.
NOTE: Reference oscillator alignment is required after replacing (or servicing) the transceiver board.

Figure 6-4. Radio Information Screen

Radio Alignment Procedures: Radio Information