E.F. Johnson Company Viking VM600, Руководство по эксплуатации

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Draft 02 - Sep 1 2015
Viking Mobile Radio Operating Manual 6-23
SMARTNET / SmartZone / P25 Trunked Features
To scroll through the other programmed sites, press and hold the SITE SEARCH option
switch while “SITE xx” or “RSSI xx” is displayed. If site lock is ON when site search is
entered (see following), the radio will be locked on the new site when this function is
exited.
Note
If a site failure occurs, the radio will automatically leave the failed site and register on
another site (after a predetermined delay). When the failed site recovers, the radio will
(after a predetermined delay) return to the site.
6.14.4 Locking / Unlocking a Site
It is sometimes desirable to stay connected to a specific site. To prevent the radio from
searching for a new site, lock it on the current site by pressing the Site Lock option switch.
To unlock the site, press the LOCK option switch again and “SITE UNLCK” (Standard
Control Head) or “Site Unlock” (Lightning Control Head) is momentarily displayed.
When the user site locks the radio, the icon will begin to flash (Lightning Control
Head only). The site lock indicator will be hidden while the radio is in menu mode, unit
call, or interconnect call.
6.14.5 Auto Site Search
Auto site search automatically searches sites and ranks them in a “Best Sites” list. Press
the Auto Site Search option switch to display the current site number or alias and RSSI
level of the current site. A “Press and Hold” of the Auto Site Search option switch will
cause the radio to automatically move from the current site and select the first/next site
from the “Best Sites” list.
6.14.6 P25 Wide Area Scan
This feature is intended to enhance roaming performance, especially when system level
steering through radio or talkgroup permissions is used.
To use system channel resources more efficiently, some system operators are using system
access permissions to steer certain talkgroups to particular sites. For example, a police
department may be allowed to use only Site 1, and a public works department may be
allowed to use only Site 2.
A Wide Area Scan can be programmed to minimize the problem just outlined. This feature
is programmed on a Talkgroup basis. However, System Site Preference lists can still be
used. The Wide Area Scan feature functions as follows: