User Manual

Epoch-M1C RF Repeater
User Manual V1.1
Advanced RF Technologies, Inc. Proprietary Document Page 26 of 38
In the event of a hard fail alarm, the control board will shut down the HPA (both
uplink & downlink) for 30 seconds and then turn on the HPA to check for a repeated
hard fail occurrence. If the hard fail alarm persists for up to four consecutive
occurrences, the control board will shut down the HPA for 20 minutes (total of five
consecutive hard fails). After 20 minutes, the HPA will automatically come back alive
and the control board will check if the Hard Fail alarm has cleared. If it has not, the
same process will continue as mentioned above.
** The alarms can also be viewed on the front panel of the repeater by clicking
the VFD button. Please refer to Appendix B for more detailed information.
** Epoch-M1C also supports AAI (Auxiliary Alarm Input). Please refer to Section
1.1.2 on Page 6.
2.3.1 General (Fixed Parameter) Alarms
Alarm List Soft Fail Hard Fail Comments
Over/Under Current O O
Soft Fail: Less than 0.5 A @ under current
Hard Fail: More than 4.7 A @ over current
Over Temperature O O
Soft Fail: 158 ~ 185 °F
Hard Fail: > 185 °F
Synthesizer Lock - O Band selection will not work properly
VSWR - O > 1.5:1
RF Power - O
Will occur in the event of any
Hard Fail alarm
Table 7 - General (Fixed Parameter) Alarms of the Epoch-M1C Software
Figure 13 - All Alarm Parameters Supported by Epoch-M1C