User Manual

RF-Orchestra!™ Transmitter Installation and Operation Maintenance
July 2000 6880493G02-C 6-11
If Amplitude Alignment has not been performed, the RF-O! transmitter will be disabled if
Power Control is enabled. You can turn Power Control OFF by entering RFO FIPS: w 992 0.
This allows the user to key that station and perform the Amplitude Alignment.
Power Cutback LED is Continuously Illuminated
The RF-O! transmitter has detected a failure condition that allows the transmitter to remain
keyed, but at a reduced power level.
Use RFO FIPS: a 83 to determine the reason for the cutback. The POWER CUTBACK STATE
will indicate the amount of the cutback, and the following two lines will indicate the reason.
(PA Temperature, PA Deck/Power Supply, or Ambient Temperature)
Use RFO FIPS: a 104 and a 99 to find more information.
If the cutback is due to Ambient Temperature, read parameter 1026 (RFO FIPS: r 1026) to
verify that the temperature sensor has been calibrated correctly. The value read will be in
Degrees Celsius. A cutback will occur at +45 degrees Celsius and higher.
If the cutback is due to PA Temperature, verify that all PA Fans are operational. Verify the
power output is at the desired level.
Check for Plug-and-Play Errors
If transmitter keying is inconsistent, check for data path errors. The RF-O! transmitter should
transmit if it is receiving valid (plug-and-play) data from the RF-B! transmitter controller.
Check the error log (RFO FIPS: a 104) for plug-and-play data errors. Extensive checks are
done in the DSP to validate plug-and-play packets. Any of the following errors will result in
dropped plug-and-play packets causing the transmitter to prematurely dekey, flushing the
DSP buffers of any transmission data that may be pending:
E_CHECK_COMMAND_FORMAT_ERROR,
E_CONTROL_COMMAND_FORMAT_ERROR,
E_END_OF_COMMAND_ERROR,
E_FREQ_OFFSET_ERROR,
E_INCOMPLETE_FRAME_ERROR,
E_INVALID_COMMAND_TYPE_ERROR,
E_INVALID_MOD_TYPE,