User's Manual

Ripwave Base Station I&C Guide Navini Networks, Inc.
216 Part #40-00047-00 Rev D v1.0
February 28, 2003
The alarm connector uses only four of the six pins. The pin names can be found in Table L1.
Table L1: Pin Names
Pin Name
1 General Fail Alarm
2 Ground reference for General Fail Alarm
3 Door Open Alarm
4 Ground reference for Door Open Alarm
5 Not Connected
6 Not Connected
The first pin of the alarm connector is the General Fail Alarm. This signal should be left open to
indicate an alarm condition from the HMC module located in the outdoor chassis. If no alarm
condition exists, this pin should be driven low. Pin 2 is used as the ground reference for this
alarm. The second alarm sent to the chassis is located on pin 3, Door Open Alarm. This signal
should be driven low when the door is closed. To indicate that the door of the outdoor chassis is
open, this signal should be left open. The associated ground reference for this signal is taken
from pin 4.
The BBU connector contains four alarm signals. These signal names are listed in Table L2.
Table L2: BBU Signal Names
Pin Name
1 Digital Ground Reference
2 BBU Battery Low
3 BBU Rectifier Fail
4 BBU AC Line Fail
5 BBU Charge Fail
6 Analog Ground Reference
The first alarm signal is located on pin 2, BBU Battery Low. If the BBU’s battery is running low,
the signal on pin 2 should be left open. BBU Rectifier Fail alarm is the next alarm and is located
on pin 3. This signal should be left open to indicate a failure on the Battery Backup Unit’s
rectifier. The next alarm condition occurs if the AC Line to the BBU fails. In this condition,
signal BBU AC Line Fail on pin 4 should be left open. If the BBU is unable to hold a charge,
then the BBU Charge Fail signal on pin 5 should be left open. For non-alarm conditions (normal
operation), these signals should be driven low. The digital ground reference for these signals is
located on pin 3. The analog ground reference should be located on pin 4.