ASCOM U922, User Manual

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2000 01 25 /Rev.A 2
User Manual
Transceiver U922
TD 91836GB
Introduction
U922 comes as either a speech transceiver, for use in the teleCOURIER 900 radio
paging system, or an alarm transceiver, for use in the telePROTECT 900 alarm
system.
Transmission of speech and alarm is made in the UHF 425-475 or the VHF 140-175
MHz range. Paging and speech is received in the UHF 425-475 MHz range. The
speech transceiver can transmit and receive voice as well as text messages, allow-
ing both mobile-to-central and mobile-to-mobile calls. The alarm transceiver can, in
addition to the functions of the speech transceivers, transmit different alarms. It
can also receive an acknowledgement paging confirming that the alarm has been
received.
The alarm transceiver can be equipped with a location receiver that stores the
location code transmitted by fixed LF or IR Locators. When an alarm is sent, the
location codes are also sent by the transceiver to the alarm central. Another
security function is that the alarm transceiver can be supervised continuously.
All transceivers, except those with a LF receiver, vibrator and one-way speech
transceivers without acknowledge are available in intrinsically safe versions that
comply with classification EEx ib IIC T4. The unit is water resistant according to
IP64.
U922 Versions
The U922 transceiver comes in the following basic versions:
•
Alarm transceiver with no-speech and 6-button keypad.
•
Speech/Alarm transceiver with one-way speech and 6-button keypad.
•
Speech/Alarm transceiver with two-way speech and full keypad.
Functions Speech Alarm
Characters per message 120 120
Stored messages 10 10
Characters in memory 480 480
"Group numbers" 5 5
Absent indication Yes Yes
Time Stamp Yes Yes
Vibrator Option Option
Keypad 6/15 6/15
Acknowledge Option Yes
EX-classification Option Option
Push button alarm — Yes
Pull-cord alarm — Option
Man-down alarm — Option
No-movement alarm — Option
IR-receiver — Option
LF-receiver — Option