User Manual

Table Of Contents
RF-Orchestra!™ Transmitter Installation and Operation Maintenance
July 2000 6880493G02-C 6-65
18. Turn off the OCM test mode (dekey) using the RFO FIPS command: a 177
19. Disconnect the Characterized Coupler and reconnect PA output cable back on the PA.
External Wattmeter Calibration
This procedure will verify cavity losses and align the RF-O! transmitter external power meter
to a reference power meter. The Reference meter must be at least 3% accurate and traceable to
the National Bureau of Standards. Any error in the Reference will be passed to the RF-O!
transmitter power meter.
1. Ensure the network is disconnected at the RFB.
2. Ensure the characterized coupler is connected to the top of the cabinet and the output of
the characterized coupler is terminated into a 500 Watt 50 Ohm load. Torque the
connections to 105 in. lb.
3. Connect the reference power meter to the FORWARD tap on the Characterized Coupler.
Set the offset of the power meter with attenuation written on the Characterized Coupler.
4. Initialize the external cal factor with the RFO FIPS command: a 72 12 0 0 0 0
RFO FIPS: a 177
RFO FIPS: RA 177
The Station is Dekeyed.
RFO FIPS: a 72 12 0 0 0 0
RFO FIPS: RA 72
<<< WRITE EXCITER EEPROM >>>
Exciter EEPROM Cell 0x12 = 0x00 0x00 0x00 0x00
RFO FIPS: