User Manual

Maintenance RF-Orchestra!™ Transmitter Installation and Operation
6-80 6880493G02-C July 2000
PA Functionality Check
This procedures assumes that the wattmeters were calibrated prior to proceeding with the
station alignment.
1. The station should still be keying in test mode from the last section. If not, key the
transmitter in test mode with following RFO FIPS command: a 176 0 8 0 0 0 1 10 5 1
2. If you have a single-PA configuration, Type OCM command: a 68 1 c 1 1 0. Verify the
following values are in the given range.
a. Register 02 should be 032 ± 6 (for 75W FM power)
b. Register 09 should be 067 ± 8 (for 75W FM power)
c. If the station is set for 75W FM power, verify that the power displayed next to the Register 09
value is within ± 15% of the reading from the internal forward wattmeter (75W ± 11W).
d. Verify that Register 3 through Register 8 are drawing more than 1.0 Amps. If not, the
PA is not functioning properly and must be replaced.
RFO FIPS: a 176 0 8 0 0 0 1 10 5 1
RFO FIPS: RA 176
<<< RFO TEST MODES >>>
Using Default Frequency Offsets of 1 15 2 14.
Where:
13 = -18.75 kHz, 14 = -12.50 kHz, 15 = -6.25 kHz
0 = 0.00 kHz
1 = 6.25 kHz, 2 = 12.50 kHz, 3 = 18.75 kHz
(Use Command "A 195" to modify the Frequency Offsets).
Using Default Channel Setting of 0.
(Use Command "A 196" to modify the Channel Setting).
The Station is Keyed in Test Mode.
RFO FIPS: a 68 1 c 1 1 0
RFO FIPS: RA 68
<<< READ PA DECK 01 A/D 01 >>>
Reg 00: PDPA = 091 => 0.11 Amp(s)
Reg 01: DPA = 092 => 2.30 Amp(s)