Vertex Standard VX-520U, Руководство по обслуживанию

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5
Priority Scanning
Priority scanning allows you to scan and monitor chan-
nels while the receiver periodically checks for calls on a
pre-selected (“priority”) channel. You may want to use
this feature if you want to scan different channels, but
don’t want to miss a call for you on a primary dispatch,
emergency or tactical frequency. After a call has been
received on the priority channel, operation returns to the
programmed default channel scheme, as mentioned be-
fore. Only
one channel at a time can be selected as the pri-
ority channel.
To assign the priority channel;
Turn the radio OFF, then depress the S/DW button
while turning the radio back ON again. “
PROG
” will
momentarily appear on the display, after which it
will revert to the currently selected channel (this
indicates you are in the programming mode). If
user-access is disabled “
INH
” will appear briefly.
Use the CH knob to select a channel which you wish
to assign the priority status, then press and hold in
the
S/DW button more than 1 second. A small “ P ”
will now appear at the top left corner of the dis-
play whenever this channel is selected, along with
an accompanying “beep”.
If you wish to change the priority status;
1. Delete the priority status by pressing and hold-
ing the S/DW button more than 1 second.
2. Rotate the CH knob to select the new priority
channel, then assign the priority status by press-
ing and holding the
S/DW button for more than
1 second.
After you have assigned the priority channel, turn
the radio off, then on again to return to normal op-
eration.
When a priority channel has been selected, the scan-
ner will check the priority channel regularly as you scan
the other channels. If a signal appears on the priority chan-
nel, the scanner will pause and operation will jump to the
priority channel. Otherwise, the scanner will pause on
active non-priority signals as previously described.
If a call comes in on a non-priority channel that you
need to respond to, just press the PTT switch while the
scanner is paused on that channel. As long as no call comes
in on the priority channel, you can send and receive on
the other channel: scanning will resume when you finish
and the channel clears.
Dual Watch
If you need to operate on a non-priority channel while
still checking for calls on the priority channel, the Dual
Watch feature let’s you to do this without using the scan-
ner. When enabled, operation on any selected non-prior-
ity remains normal as before, however, when a signal is
received on the priority channel or when you press the
PTT switch, operation immediately shifts to the priority
channel. The rate at which the Dual Watch feature sam-
ples the priority channel can be set by the user.
To begin Dual Watch operation, first assign a pri-
ority channel as described before, then select the
non-priority channel you wish to operate on.
Press and hold the S/DW button until the second
beep sounds, “ DW ” (but not “ S ”) will appear at
the top of the display.
To manually shift to the priority channel, press the
PTT switch. At this time you make transmit, other-
wise, if no signal is received within 2 seconds, op-
eration will revert back to the other selected Dual
Watch channel.
To turn off the Dual Watch Feature, press and hold
the S/DW button again (“ DW ” will disappear in the
display).
Low Battery Power Indication
When the rechargeable Ni-Cd battery pack voltage
reaches a low level, the “ ” indicator appears at the
lower right corner of the LCD, and the “ BUSY/TX ” in-
dicator will blinks red. Immediately remove the Ni-Cd pack
and install a freshly charged battery pack, or insert the radio
into the charging stand for a complete recharge cycle
. If you
plan to operate your radio for extended periods of time,
you may want to keep a spare, fully-charged pack
handy.
Operating Manual Reprint