User Manual

Table Of Contents
RF-Orchestra!™ Transmitter Installation and Operation Maintenance
July 2000 6880493G02-C 6-57
2. Null the CFT using the RFO FIPS command: a 74
Calibrate Paging Station Wattmeters
This procedure aligns the paging station wattmeters to a reference power meter. The reference
power meter must be at least 3 percent accurate and traceable to the standards set forth by the
National Bureau of Standards. Any error in the reference is passed to the paging station
wattmeters.
Perform this procedure whenever you replace a wattmeter, an RF coupler, an exciter, and
during periodic maintenance routines.
The internal wattmeter measures paging station RF power at the output of the PA(s). The
external wattmeter measures paging station RF power after the cavity filter.
RFO FIPS: a 74
Please wait. Command in process...
RA 74
Carrier Null Complete.
<<< CARRIER NULL TABLE >>>
---------- (Table Valid) ---------
Txlin Register $12
Init 0x0c 0x04 0x08 Final
----------------------------------------
979 -175 -50 -175 -50 -175
980 -1034 -1500 -1500 -1031 -1031
Vif ----- 0.18 0.18 0.18 -----
Nulling Ambient Temperature: 25 Deg C
=============================================
CAUTION
The RF-O! transmitter must warm up (transmit) for a minimum of five minutes
before starting this procedure.