GME Electrophone TX4200 Series, Инструкция по эксплуатации

Страница: 20 / 33

The group code appears as an 'A' in the last
digit of the Selcall Ident when displayed on
the LCD.
Example
Transmitting the Ident 12037 will only
activate the receiver which is programmed
with the Ident 12037
However, transmitting 1203A will activate all
receivers with Idents 12030 through 12039
(a total of 10 receivers).
To make use of the group call function, your
TX4200 fleet should have Selcall Idents which
are in sequence.
i.e. 12030, 12031, 12032 etc
If the receivers in your TX4200s do not have
sequential Selcall Idents and you need to make
use of the group call function you can arrange
for you dealer to re-programme your TX4200s
(see section on dealer programming options).
Programming and Sending a Group
Call
Programming and sending a group call is
identical to the normal Selcall operation.
1. Select the 'Call To' mode by briefly pressing
the CALL button.
2. Programme the Selcall Ident as described
earlier. Ensure the last digit is programmed
with 'A'.
3. Now press and hold the CALL button for
about 1.5 seconds until a high beep is heard.
The TX indicator will appear and the group
call will be transmitted.
There will be no acknowledge response from
the other radio's when sending a group call.
This is to prevent all the radios from trying to
acknowledge at the same time.
Receiving a Group Call
Receiving a group call is identical to receiving a
standard Selcall except that a low beep alarm
sound is heard instead of the standard high
beep alarm. The Caller’s Ident will be displayed
on the LCD in the usual way.
The PAGE function is primarily designed to be
used when you need to leave your radio
unattended but need to be informed immediately
if a call specifically intended for you is received.
The PAGE function allows your TX4200 to
automatically call another UHF receiver
whenever your TX4200’s Selcall Ident is
received. To receive the Paging call you will
need a second UHF receiver with a CCIR
compatible Selcall fitted (such as the GME
PG4000 paging receiver or another TX4200).
If your TX4200 receives it’s Selcall Ident while
in the PAGE mode, it temporarily switches to a
paging channel, checks that the channel is not
in use, then transmits a programmed PAGING
Ident to the other receiver. It then returns to the
channel on which the original call was received,
activates it’s own Selcall alarm and displays the
Caller’s Ident.
(If the Page channel is busy, your
Tx4200 will wait until it is clear, then transmit
the Page Ident).
NOTE:
To allow your Tx4200 to operate in the
PAGE mode while your vehicle is unattended,
your Tx4200 must be wired so that it has a
continuous 13.8 Volt power source even when
the vehicles ignition is switched off (please see
installation instructions).
Example:
You have your TX4200 installed in
your vehicle but you often have to leave your
vehicle unattended. Each time you leave your
vehicle, you set your TX4200 to the PAGE
mode and you carry a GME PG4000 paging
receiver with you (your TX4200 has previously
been programmed with a Paging channel and a
Selcall Ident that matches the Paging receiver).
When your TX4200 receives a call containing
it’s Selcall Ident it quickly switches to your
Paging receiver channel and transmits your
Paging receiver’s Selcall Ident. Your TX4200
then returns to the channel on which the call
was received and sounds it’s own alarm.
Meanwhile, your Paging receiver is beeping to
20
PAGING FUNCTION