User Manual

Table Of Contents
RF-Orchestra!™ Transmitter Installation and Operation Maintenance
July 2000 6880493G02-C 6-5
If CFT Nulling is INVALID, this indicates that CFT Nulling has not been performed since
RFO 2.0.0 was installed, or since a new Exciter module was installed. RFO 2.0.0 was the first
version of software to store the CFT Nulling table in the Exciter EEPROM. See Chapter 5,
"Operation", Carrier Feedthrough Nulling section.
If the Power Leveling amount is greater than 0.5 dB or less than -0.5 dB, this usually indicates
that the Amplitude Alignment is not accurate. However, if the Amplitude Alignment is
accurate, then the Internal Wattmeter must be recalibrated.
If any of the Disable Sources (under PAGING DISABLED STATUS) are ACTIVE, the
transmitter will not key until the cause of the disable is cleared. Check the alarm and error log
(RFO FIPS: a99 and a 104) for details on any active Disable Source.
Note: The transmitter can be temporarily disabled by writing parameter 99 to ‘1’
(
RFO FIPS:
w 99 1). It can then be enabled, if no other disable sources are ACTIVE, by
writing it back to ‘0’ (
RFO FIPS: w 99 0
).
Table 6-2: Paging Disabled Definitions (Sheet 1 of 4)
Disable Source Description
Paging Access Disabled
Parameter 99 is Set to 1 by the user. Write parameter 99 to 0 (RFO FIPS: w
99 0)to clear this disable source.
PA Power Supply A/D Read Fail
An attempt to read the Power Supply A/D Converter on one of the PA’s by
the RF-O! transmitter software failed, or the A/D Test voltage was not within
the valid range. Check for proper installation of PAs.
OCM Ambient Temp High
The Ambient Temperature read on the OCM is greater than the Ambient
Temperature Shutdown threshold, which is stored in parameter 3002 (in
degrees Celsius). Verify that the OCM temperature sensor has been cali-
brated correctly. Parameter 1026 displays the current OCM ambient temper-
ature. Parameters 1028 and 1029 are used to calibrate the temperature
reading. Power Control must be Enabled for this disable source to cause the
transmitter to shutdown.
Exciter Not Locked
One or both of the 2 LO synthesizers on the Exciter is not locked. Check for
proper exciter installation, plug-and-play cable connection, Pendulum, or
UHSO alarms.
Txlin Not Locked The IF synthesizer on the exciter is not locked.
AM Clipping Detected
Clipping has occurred on 3 consecutive voice (InFLEXion) transmissions.
Power Control must be Enabled (parameter 992 set to 1) for this disable
source to cause the transmitter to shutdown.