Transmit Power Alignment; Figure 6-4. Reference Oscillator Alignment Screen; Table 6-1. Reference Oscillator Alignment - Motorola ASTRO SPECTRA Service Manual

6-4
MOTOROLA Radio Service Software
ASTRO
MAIN:SERVICE:TX ALIGN:REF OSC
Frequency
---------
869.9875
0
MIN |----+----+----+----X----+----+----+----+----+----+----+----| MAX
F1
HELP
6. If you are using the R-2670 Communication Analyzer, enter the frequency displayed on the
RSS screen in the "RF control" section of the R-2670. Under the "Meter" section of the
display, choose RF DISPLAY.
7. Press F6 to key the radio. The screen will indicate that the radio is transmitting.
8. Wait 5 seconds until the analyzer reading settles. Record the transmitter frequency (or note
the frequency error reading on the screen).
9. Use the Up and Down arrow keys on your computer keyboard to adjust the reference
oscillator softpot value. Allow approximately five seconds for the analyzer frequency reading
to stabilize after each change.
10. Adjust the frequency error, as indicated in
11. Press F6 again to dekey the radio.
12. Press F8 to program the new softpot value.
13. Press F10 once to return to the TRANSMITTER ALIGNMENT MENU, or press F10 twice to
return to the SERVICE MENU.
6.2.4

Transmit Power Alignment

NOTE: All power measurements are to be made at the antenna port.
NOTE: The transmitter power setting keeps the radiated power at or below the level specified in the
exclusionary clause for low power devices of IEEE Standard C95.1-1991.
February 3, 2003
Model: T04SLF9PW7AN
REFERENCE OSCILLATOR
--------------------
Current Value
-------------
72
Transmitter..On
F2 F3 F4 F5

Figure 6-4. Reference Oscillator Alignment Screen

Table 6-1. Reference Oscillator Alignment

Band
VHF
UHF
800 MHz
Radio Alignment Procedure: RSS
Use UP/DOWN Arrows To Adjust Softpot.
New Softpot Value......72
F6 F7 F8
TOGGLE PROGRAM
PTT VALUE
Table 6-1 .
Target
±70Hz
±150Hz
±150Hz
255
F9 F10
EXIT
6881076C20-E