User Manual

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Installation and System Administration
Rev. B - 1/97
2-14
Figure 2-5
Alarm Relay Contacts
The major and minor alarm contacts built into the AirLink Pro T1 are SPDT
relay contacts rated at 8 VA (0.25 A maximum at 100 VDC maximum) isolated
from the ground. The alarm relays are de-energized when the AirLink Pro
T1/E1 Rack Mount is in an alarm state: the NO contact is closed; the NC contact
is open.
If an alarm occurs such that an entry is put into the event queue, the alarm
contacts switch to the alarm state for as long as the alarm event persists or until
the alarm is reset.
Terminal Connection
A simple ASCII terminal or personal computer can be connected to the RJ-11
Terminal Jack on the front or rear panels of the AirLink Pro T1/E1 Rack Mount
to monitor and configure its operation. A DB9 to RJ-11 adapter is included. In a
hub installation involving a number of AirLink Pro T1/E1 Rack Mount pairs, the