6
5.4.5
Viewing contents of a scan table
There are two ways of checking what channels are in a particular
scan Table. While the key is pressed, the display will cycle through
the channels of the chosen scan Table.
1.
Press
Shift
and then hold down
Scan
. The display will keep
cycling through the channels – one every second – from low to
high and repeating as long as Scan is pressed.
OR
2.
Press
Shift
and then hold down
Mem
. The display will keep
cycling through the channels – one every second – from low to
high and repeating as long as Mem is pressed.
5.5
Dual watch
With your VHF DSC, you can monitor two channels at the same time
– a priority channel and your selected channel.
5.5.1
Starting a dual watch
To start a dual watch with priority channel 16 and another channel,
press
Shift
followed by the number of the second channel. For
example, to start a dual watch with channels 16 and 6, press:
Shift
followed by
6.
When a dual watch is in progress, the letters DW appear in the top
left of the display and the priority channel is shown in the bottom
right corner.
5.5.2
Stopping a dual watch
A dual watch can be ended in three ways.
1.
By pressing
Shift, DW
.
2.
By pressing
PTT
. The system then resumes normal VHF
operation on channel 6 and starts transmitting.
3.
By pressing
16
. The system then resumes normal VHF operation
on channel 16.
5.6
Locking the keyboard
The keyboard can be locked to avoid unintentional channel changes
during a telephone call. When the keyboard is locked, the only
functions that can be controlled are:
1.
The volume.
2.
The squelch level.
3.
Channel selection using
CH
followed by the
up
or
down arrow
.
What you cannot do with the keyboard locked is change channel
using the numeric keypad.
To lock the keyboard, press
Shift
once and then again, this time
holding down for 1 second. The key symbol appears on the left of the
display to show the keyboard is locked.
5.7
Unlocking the keyboard
The keyboard can be unlocked in two ways:
1.
By pressing
Shift
twice.
2.
By pressing
16
for 1 second. This unlocks the keyboard and
switches the unit to channel 16.
5.8
Intercom
If your system has more than one control unit, you can use them for
intercom, as follows:
5.8.1
Initiating an intercom call from the handset
to another control unit
To call another control unit:
1.
Press
Shift
and
Inter-C
. The display shows SELECT NO asking
you to type in the location number to be called.
2.
Press a numeric key – for example 2 – to select the location you
are calling.
3.
If the location is
not available, the display registers IC2 NOT
AVAIL and does not dial the number. If it is available, the display
shows IC2 CALLING and a ringing tone can be heard in the
loudspeaker/earpiece. IC2 indicates that location 2 has been
dialled. The lower part of the display now toggles between
CALLING and the name of the unit called. During the next 30
seconds, you may lift the handset and speak into the micro-
phone. The person receiving the call will then hear you via the
loudspeaker without lifting his handset. In this way, the VHF
system can be used as a sort of paging system.
4.
If the handset is lifted within the first 30 seconds, intercom is
established. If no one answers your call, the handset automati-
cally rings off and reverts to normal VHF operation.
5.8.2
Receiving an intercom call from another
control unit
If someone tries to set up an intercom to your handset:
1.
The loudspeaker will broadcast a ringing tone and the display will
toggle between CALLING and the name of the caller. The display
will also show the location number of the caller – for example
IC3 for location 3.
2.
To answer, simply lift your handset. Connection between the two
control units is now established. To communicate, simply press
PTT
and speak into the microphone.
During an intercom call, you can adjust various features from the
handset:
1.
Adjust volume.
2.
Mute/activate the loudspeaker.
3.
Adjust squelch.
4.
Adjust backlight level.
5.8.3
Terminating an intercom call
The intercom connection can be ended by either of the control units,
by:
1.
Replacing the handset. VHF mode is resumed.
2.
Pressing
Shift
and
Inter-C
. VHF mode is resumed.
3.
Pressing
16
. VHF mode is resumed on channel 16.
Operation
0238
