Appendix; Shutdown Retry Logic - ADRF SDR-ICS-43 User Manual

9. APPENDIX

9.1

Shutdown Retry Logic

The function of the built-in shutdown routine is to protect the repeater from any further damage from a hard-
fail that the system may be experiencing.
Within 5 seconds of a hard-fail alarm being detected, the repeater will start the shutdown routine. The
repeater will shut down by powering of the HPAs (high-powered amplifiers) for 30 seconds.
After 30 seconds have elapsed, the repeater will power on the HPAs and check to see if the hard-fail alarm still
exist. If the hard-fail alarm still exists, then the repeater will shut down for 1 minute (double the time of the
previous shutdown time).
After 1 minute has elapsed, the repeater will power on the HPAs and check to see if the hard-fail alarm still
exist. If the hard-fail alarm still exists, then the repeater will shut down for 2 minutes (double the time of the
previous shutdown time).
The shutdown routine will repeat itself a total of 10 times. If the hard-fail alarm still exists after the 10th retry,
then the repeater will turn off its HPAs permanently until a reset is performed or factory set is executed.
AGC............................................................................9, 10, 31
ALC...................................................................................9, 31
AROMS .................................................................................. 9
BTS......................................................................................... 9
CDMA .................................................................................... 9
CW ......................................................................................... 9
DAS ........................................................................................ 9
DL...............................................................................9, 29, 31
Downlink ...................................................................9, 29, 31
HPA..................................................................................9, 29
HW......................................................................................... 9
IF ............................................................................................ 9
Advanced RF Technologies, Inc.
INDEX
LNA.........................................................................................9
LTE..........................................................................................9
MS ..........................................................................................9
PLL..........................................................................................9
PS ...........................................................................................9
RF ........................................... 2, 9, 10, 16, 18, 22, 26, 31, 41
SQE.........................................................................................9
SW..........................................................................................9
UL .............................................................................. 9, 29, 31
Uplink.............................................................................29, 31
VSWR ...............................................................................9, 32
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