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S Y S T E M F A U L T S
GPS Signal (SIG)
This fault indicates that the GPS Receiver has not been able to acquire a GPS signal for one hour
while the Time Figure of Merit has been 9, the unsynchronized condition. This could be due to a
variety of reasons. If there are no other faults that could explain the inability to receive a signal, then
there could be an antenna failure or blockage. If the condition persists indefinitely, and a problem
with the antenna is not evident, then please contact EndRun Customer Support.
GPS Receiver FPGA Configuration (FPGA)
This fault indicates that the GPS Receiver is unable to configure the FPGA. This is a fatal fault.
Please contact EndRun Customer Support.
GPS Receiver FLASH Writes (FLSH)
This fault indicates that the GPS Receiver is unable to verify a write to the FLASH non-volatile
parameter storage area. This should not ever occur under normal operation.. Please contact EndRun
Customer Support.
Synthesizer Limits (SYN1)
This fault indicates that the local oscillator synthesizer has reached the alarm limit. This condition
should not normally occur unless the unit is subjected to out-of-specification environmental condi-
tions. Otherwise, this is a fatal fault. Please contact EndRun Customer Support.
Synthesizer (SYN2)
This fault indicates that the local oscillator synthesizer has failed. This condition should not nor-
mally occur unless the unit is subjected to out-of-specification environmental conditions. Otherwise,
this is a fatal fault. Please contact EndRun Customer Support.
GPS Reference Time (REF)
This fault indicates that the GPS Receiver received an erroneous time input from the GPS signals. If
the condition persists please contact EndRun Customer Support.
GPS Receiver Oscillator (OSC)
This fault indicates that the main oscillator has failed. This is a fatal fault. Please contact EndRun
Customer Support.
Antenna Short (SHRT)
This fault indicates that the GPS antenna has an overcurrent condition (short).
Antenna Open (OPEN)
This fault indicates that the GPS antenna has an undercurrent condition (open).
GPS Receiver Oscillator PLL (Phase-Lock-Loop)
This fault indicates that there is an unlock condition between the receiver oscillator and the other
system timebase clocks. This is a fatal fault. Please contact EndRun Customer Support.
Summary of Contents for RTM3205
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