User Manual

Table Of Contents
Optical Master Unit
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd A1829300 rev H 20 (86)
Green LED – Modem Status
On
Depending on type of call:
Voice call: Connected to remote party
Data call: Connected to remote party or exchange of parameters while
setting up or disconnecting a call
Flashing
(irregular)
Indicates GPSR data transfer. When a GPRS transfer is in progress the LED
goes on within 1 second after data packets were exchanged. Flash duration
in approximately 0.5s.
75ms on/75ms off/75ms on/3s off
One or more GPRS contexts activated
75ms on/3s off
Logged to network (monitoring control channels and user interactions). No
call in progress
600ms on/600ms off
No SIM card inserted, or no PIN entered, or network search in progress, or
ongoing user authentications, or network login in progress
Off Modem is off
2.2.4 External Alarm and Battery Module
The External Alarm and Battery Module is placed in slot 10.
This module has two functions.
It holds a rechargeable battery pack
It has plinths for external alarms and a sum alarm relay
2.2.4.1 Battery
The rechargeable battery pack will provide the Control Module in the OMU and the modem with enough
capacity to send an alarm in case of an input power failure. This battery can be switched on and off with the
switch on the front of the module.
2.2.4.2 External Alarms
Four external alarm sources can be connected to the External Alarm and Battery Module via the patch panels.
These sources must generate a voltage between 12 and 24VDC. The presence or absence of this voltage will
trigger the alarm depending on how the alarm thresholds have been configured. The module can also supply
+15V to external alarm sources. The maximum allowed load on this supply is 100mA.
2.2.4.3 Relay
The module contains a relay that can be connected to an external device to indicate an alarm. The relay can be
configured to trigger on any number of internal and external alarms. The maximum current through the relay is
100mA.
Green LED – Modem Power
On Modem Power is on
Off Modem Power is off