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B KLN 94
Rev. 4, Jan/2003 10599I04.CDL Page 2-81
RCVR Hardware
Error: 0100
BBP Timeout: The 1 mS baseband
processing timer has failed
self-test.
It could be one of the following, in the order of
probability:
1. The 5 volt supply to the antenna could be
shorted out in the coax. This disables the oscillator
in the GPS.
2. The flex cable between the Receiver and Main
Board may have come out of the socket in the GPS.
3. Bad TCXO or ASIC on receiver module in GPS.
Substitute the GPS unit.
RCVR Hardware
Error: 0400
RS 232 Receiver Failure: The GPS
Receiver did not receive any
initialization data from the host
computer on the RS 232 port.
It could be one of the following, in the order of
probability:
1. The flex cable between the Receiver and Main
Board may have come out of the socket in the GPS.
2. Bad 32KHz crystal, UART, or processor on
Receiver Module in GPS. Substitute the GPS unit.
RCVR Hardware
Error: 0800
EEPROM Failure: The EEPROM
memory has failed its checksum.
Bad EEPROM. Return for service.
RCVR Hardware
Error: 1000
RS 232 Channel 2 Failure: The
second RS 232 UART on the
receiver has failed the loop-back
test. This self-test can only be
enabled during test mode on the
receiver and should not be seen in
normal operation.
It could be one of the following, in the order of
probability:
1. The receiver was put in test mode without
looping back the two serial ports.
2. Bad ASIC or Microprocessor on the receiver.
RCVR Hardware
Error: 2000
BBP Underflow: The baseband
processing loop detected an error
in the 1mS processing loop.
It could be one of the following, in the order of
probability:
1. The flex cable between the Receiver Board and
the Main Board mat have come out of the socket in
the GPS.
2. Bad TCXO, MMIC, or ASIC on the Receiver
Board.
RCVR Hardware
Error: 8000
BBP Overflow: The baseband
processing loop detected an error
in the 1mS processing loop.
It could be one of the following, in the order of
probability
1. The flex cable between the Receiver Board and
the Main Board mat have come out of the socket in
the GPS.
2. Bad TCXO, MMIC, or ASIC on the Receiver
Board.
TABLE 2-1 GPS RECEIVER ERROR CODES
GPS Rec.
Error Codes
Definition Suggested Action