Motorola XTS 3000 用户手册
24
Common Radio Features
Selecting Squelch Operation
Tone Private-Line® (PL), Digital Private-Line™ (DPL), network ID, and carrier
squelch operations are all available in the same radio on a per channel basis.
squelch operations are all available in the same radio on a per channel basis.
Network ID is only available on ASTRO “digital” channels
(consult your service technician).
When in carrier squelch operation, all traffic on the channel is heard. When
in PL, DPL, or network ID operation, your radio responds to only those
messages intended for you. PL, DPL, network ID, and carrier squelch can be
programmed on a per channel basis.
in PL, DPL, or network ID operation, your radio responds to only those
messages intended for you. PL, DPL, network ID, and carrier squelch can be
programmed on a per channel basis.
Smart PTT
Smart PTT is a per-channel, programmable feature used in conventional radio
systems to keep radio users from talking over other radio conversations. When
smart PTT is enabled in your radio, you will not be able to transmit on an
active channel. If you try to transmit (press the PTT Switch) on an active
smart-PTT channel, an alert tone will be generated and the transmission will
be inhibited. The LED will also blink red to indicate that the channel is busy.
systems to keep radio users from talking over other radio conversations. When
smart PTT is enabled in your radio, you will not be able to transmit on an
active channel. If you try to transmit (press the PTT Switch) on an active
smart-PTT channel, an alert tone will be generated and the transmission will
be inhibited. The LED will also blink red to indicate that the channel is busy.
Three radio-wide variations of smart PTT are available:
•
Transmit Inhibit on Busy Channel with Carrier — With this feature
enabled, you will be prevented from transmitting if any activity is
detected on the channel.
enabled, you will be prevented from transmitting if any activity is
detected on the channel.
•
Transmit Inhibit on Busy Channel with Wrong Squelch Code — With
this feature enabled, you will be prevented from transmitting on an active
channel with a squelch code or (if secure-equipped) encryption key other
than your own. If the PL code is the same as yours, the transmission will
not be prevented.
this feature enabled, you will be prevented from transmitting on an active
channel with a squelch code or (if secure-equipped) encryption key other
than your own. If the PL code is the same as yours, the transmission will
not be prevented.
•
Quick-Key Override — This feature can work in conjunction with either
of the two above variations. With this feature enabled, you will be able to
override the transmit-inhibit state by quick-keying the radio; in other
words, two PTT Switch presses within the time programmed through the
radio service software for Smart PTT Quick-Key Timer (default value is
1/2 second).
of the two above variations. With this feature enabled, you will be able to
override the transmit-inhibit state by quick-keying the radio; in other
words, two PTT Switch presses within the time programmed through the
radio service software for Smart PTT Quick-Key Timer (default value is
1/2 second).
Note
Model I Book Page 24 Wednesday, August 14, 1996 8:51 AM