RFL 9780 16 - 7 RFL Electronics Inc.
April 8, 2003 (973) 334-3100
The values display shows the parameter number for each alarm, a brief description of its meaning, and
its status. Full descriptions for each alarm are as follows:
011 – Tx Fail #1 This indicates that transmitter channel #1 has failed (this is the only
transmitter in a Tx, or Tx/Rx chassis).
012 – Tx Fail #2 This indicates that transmitter channel #2 has failed (this is the second
transmitter in a Tx/Tx chassis).
013 – Logic Alarm #1 This indicates that there is a problem with receive channel #1 (this is the
only receive channel in an Rx, or Tx/Rx chassis). The possible causes of
a logic alarm are:
• Excessive noise is detected in the received signal.
• The received level is out of normal limits (either too high or too low).
• The system is receiving both guard and trip signals simultaneously.
• The system is not receiving either a guard or a trip signal.
• There has been a failure of the 9780’s internal power supply(s).
014 – Logic Alarm #2 This indicates that there is a problem with receive channel #2 (this is the
second receive channel in an Rx/Rx chassis). The possible causes of a
logic alarm are:
• Excessive noise is detected in the received signal.
• The received level is out of normal limits (either too high or too low).
• The system is receiving both guard and trip signals simultaneously.
• The system is not receiving either a guard or a trip signal.
• There has been a failure of the 9780’s internal power supply(s).
015 – Power Fail #1 This indicates that a problem has been detected with power supply #1. In
a single supply system, this is the only supply. In a Tx, Rx, Tx/Rx, or
Rx/Rx chassis with dual supplies, the system will continue to operate
using the backup supply. In a Tx/Tx chassis, as one supply is required for
each channel, channel #1 will be disabled.
016 – Power Fail #2 This indicates that a problem has been detected with power supply #2.
This is only applicable in dual supply systems. In a Tx, Rx, Tx/Rx, or
Rx/Rx chassis with dual supplies, the system will continue to operate
using supply #1. In a Tx/Tx chassis, as one supply is required for each
channel, channel #2 will be disabled.
017 – Low Level #1 This indicates that the receive level for channel #1 is below acceptable
limits (this is the only receive channel in an Rx or Tx/Rx chassis).
018 – Low Level #2 This indicates that the receive level for channel #2 is below acceptable
limits (this is the second receive channel in an Rx/Rx chassis).
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