Specifications
36 MDS 4790/9790 Series I/O Guide MDS 05-3438A01, Rev. E
Each bit of the hexadecimal response code represents a unique alarm
event. The first 4-digit number indicates major alarm conditions; if there
are no major alarms, this number is 0000. The second 4-digit number
represents minor alarm conditions; if there are no minor alarms, this
number is 0000.
Code values for individual major alarm conditions are given below:
Code values for individual minor alarm conditions are given below:
Table 9. Major Alarm Conditions’ Hexadecimal Values
Alarm Code Event Num-
ber
Description
4000 0000 1 The hardware configuration disagrees with the software.
2000 0000 2 Model number is not programmed.
1000 0000 3 Authorization fault (radio option not available).
0800 0000 4 One or both of the programmable synthesizers is
reporting an “out of lock” condition.
0200 0000 6 A/D fault
0100 0000 7 One or more of the radio’s internal voltage regulators is
reporting a failure. The radio will not work.
0080 0000 8 The system has not been calibrated. Factory calibration
is required for proper operation of the system.
0020 0000 10 The radio was unable to properly program itself to the
appropriate defaults. There may be a hardware
problem.
0008 0000 12 The receiver timed out.
0004 0000 13 The transmitter timed out.
0001 0000 15 Output power fault.
Table 10.Minor Alarm Conditions’ Hexadecimal Values
Alarm Code Event Num-
ber
Description
0000 8000 16 The unit address has not been programmed.
0000 4000 17 A data parity fault has been detected on the DB25. This
usually means there is a parity setting mismatch
between the radio and the RTU.
0000 2000 18 A data framing error has been detected on the DB25.
This sometimes means there is a baud rate mismatch
between the radio and the RTU.
0000 0800 20 Configuration error. The modem setting is incorrect.
0000 0015 21 Unit is running on back-up battery power.
0000 0016 22 Standby radio hardware not installed or available.
0000 0040 25 The 10-Volt power regulator output is out of tolerance. If
the voltage is too far out of tolerance, the radio may not
work.