NPX136D Series Panel Mount P25 VHF Transceiver
SM68 Installation and Operation Manual
Section 3 Rev: 1.00 Issue
4
Page 3-22
ENG-FORM: 806-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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Name:
3.9.2
Call Menu for Digital Channels
There is no call menu implemented for digital channels.
3.10
Scanning
Turn scan mode on by putting the SCAN / NORM / GD TX switch in the SCAN position. The lower display
will briefly show
Enabling List...
and then
XXX SCANNING
,
where XXX is the current scan mode:
LIST, PRI or L+P. The scan mode, and list and priority channels are set from the edit scan menu (section
3.7.
4).
To turn scan mode off put the SCAN / NORM / GD TX switch in the NORM position.
When the SCAN / NORM / GD TX switch is placed in the SCAN position all other modes of operation are
cancelled and the NPX136D starts scanning.
The NPX136D can scan up to 16 channels. This includes 14 list channels, 1 priority channel and the
home channel.
The home channel is the current channel, shown when scanning is turned on.
When list scanning, the NPX136D checks for an RF signal on the list channels and the home channel.
When an RF signal is detected which meets the channel's squelch requirements, the NPX136D stops on
that channel until there is no receive or transmit for 5 seconds, and then scanning is started.
When priority scanning the NPX136D checks for an RF signal on the priority channel and the home
channel. If an RF signal is detected on the home channel the NPX136D checks the priority channel for an
RF signal once every three seconds. To check for a priority channel the NPX136D must retune the main
receiver to the priority channel. The main receive audio is muted during this check. There is no priority
scanning for 5 seconds after transmitting.
When list and priority scanning, the priority channel is added to the list channels and when the NPX136D
stops on a home or list channel the priority channel is checked for an RF signal the same as when priority
scanning.
Note that the selected zone has no effect on scanning. Channels that are not in the current zone but are
still in the scan list are still checked for carrier when scanning.
When the NPX136D is stopped on a list channel, the list channel may be temporarily removed from the
scan list by pressing the DEL button or CHAN – switch. To re-enable these channels, scanning is turned
off and then on.
Press Fn to transmit the DTMF sequence and be returned to the Analog Call menu.
Calling...
