User Manual

Table Of Contents
Maintenance RF-Orchestra!™ Transmitter Installation and Operation
6-60 6880493G02-C July 2000
9. Increase the power (read on the power meter) to 200 watts by adjusting the OCM
parameter 990 starting with initial value of 0.4 (i.e. FIPS: w 990 0.4). Note that the range of
parameter 990 is 0.0 to 1.0. Make initial steps of 0.1. The power must be between 195 and 205
watts ± 5 watts in order for the calibration to take place.
10. Wait about two minutes for transmitter to key up at least 60 times. Verify that the internal
calibration factor is 1.00000 by typing the RFO FIPS command a790. Also verify that the
uncalibrated internal wattmeter reading is within 20% of the reading on the reference
power meter. Use the “Power Per Subchannel” reading from the a 79 0 response as the
external wattmeter reading.
The Station is Keyed in Test Mode.
RFO FIPS: w 990 0.40
RFO FIPS: RW 990 0.400000
RFO FIPS: w 990 0.5
RFO FIPS: RW 990 0.500000
RFO FIPS: w 990 .46
RFO FIPS: RW 990 0.460000
RFO FIPS: w 990 .465
RFO FIPS: RW 990 0.465000
RFO FIPS: w 990 .467
RFO FIPS: RW 990 0.467000
RFO FIPS: a 79 0
RFO FIPS: RA 79
<<< FM POWER OUTPUT READINGS >>>
========= INTERNAL FORWARD WATTMETER =========
Last Keyed FM Readings:
Total Station Power: 84 Watts
Total Wattmeter Voltage: +1.08 Volts
Average FM Keyed Readings (over last 20 keyups):
Power Per Subchannel: 84 Watts <----------------Use this reading
Calibration Factor: 1.000000