February 3, 2003 6881076C20-E
6-4 Radio Alignment Procedure: RSS
Figure 6-4. Reference Oscillator Alignment Screen
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
Table 6-1.
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.
Table 6-1. Reference Oscillator Alignment
Band Target
VHF ±70Hz
UHF ±150Hz
800 MHz ±150Hz
MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.
ASTRO Model: T04SLF9PW7AN
MAIN:SERVICE:TX ALIGN:REF OSC
REFERENCE OSCILLATOR
--------------------
Frequency Current Value
--------- -------------
869.9875 72 New Softpot Value......72
Transmitter..On
0 255
MIN |----+----+----+----X----+----+----+----+----+----+----+----| MAX
F1 F2 F3 F4 F5 F6 F7 F8 F9 F10
HELP TOGGLE PROGRAM EXIT
PTT VALUE
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