E F Johnson Company 2425372 ユーザーズマニュアル
Draft
-6 5300 ES Series Mobile Radio Operating Manual
December 2006
3.7
Radio Operating Modes
Each selectable channel can be programmed for the conventional (analog or Project 25
digital), SMARTNET/SmartZone, or Project 25 digital trunked operating mode. For
example, Zone 1/Channel 1 could be a conventional channel, Zone 1/Channel 2 a
SMARTNET channel, and so on. More information on these modes follows.
digital), SMARTNET/SmartZone, or Project 25 digital trunked operating mode. For
example, Zone 1/Channel 1 could be a conventional channel, Zone 1/Channel 2 a
SMARTNET channel, and so on. More information on these modes follows.
3.7.1 Conventional Mode
This is a non-trunked operating mode which accesses independent radio channels. There is
no automatic access to several channels. Selecting a conventional channel selects a
transmit and receive frequency and other channel parameters such as squelch control
coding.
no automatic access to several channels. Selecting a conventional channel selects a
transmit and receive frequency and other channel parameters such as squelch control
coding.
Conventional channels can be either standard (analog) or Project 25 (digital). With digital
operation, the DSP (Digital Signal Processor) converts the audio signal to digital data
which is sent over the air as complex tones. Another difference is that analog channels use
Call Guard (CTCSS/DCS) squelch control and Project 25 channels use a NAC (Network
Access Code) and talk group ID codes.
operation, the DSP (Digital Signal Processor) converts the audio signal to digital data
which is sent over the air as complex tones. Another difference is that analog channels use
Call Guard (CTCSS/DCS) squelch control and Project 25 channels use a NAC (Network
Access Code) and talk group ID codes.
With Project 25 operation, a NAC is transmitted and it must match the NAC programmed
in the base equipment and the mobile(s) being called for communication to occur. In
addition, to receive standard group calls, the receiving mobile must be programmed to
detect the transmitted talk group ID code.
in the base equipment and the mobile(s) being called for communication to occur. In
addition, to receive standard group calls, the receiving mobile must be programmed to
detect the transmitted talk group ID code.
With conventional operation, a busy channel condition is detected automatically if the
busy channel lockout (transmit disable on busy) feature is programmed. Otherwise, it must
be detected manually. An out-of-range condition is not indicated by special tones or
messages as with SMARTNET operation because there is no initial data exchange with the
repeater that allows this condition to be detected. Operating features unique to
conventional channels are described in Section 5.
busy channel lockout (transmit disable on busy) feature is programmed. Otherwise, it must
be detected manually. An out-of-range condition is not indicated by special tones or
messages as with SMARTNET operation because there is no initial data exchange with the
repeater that allows this condition to be detected. Operating features unique to
conventional channels are described in Section 5.
3.7.2 SMARTNET/SmartZone Mode
This is a trunked operating mode in which automatic access is provided to several RF
channels. ID codes are used to select what mobiles are being called and what calls are
received. Monitoring is performed automatically and special messages and tones indicate
busy and out-of-range conditions.
channels. ID codes are used to select what mobiles are being called and what calls are
received. Monitoring is performed automatically and special messages and tones indicate
busy and out-of-range conditions.
SMARTNET and SmartZone operation and programming is very similar. Basically,
SMARTNET operation is limited to a single repeater site and SmartZone operation allows
automatic roaming between sites. Enhanced SMARTNET/SmartZone features include
roaming (SmartZone only), telephone, private, and emergency calls, Call Alert
SMARTNET operation is limited to a single repeater site and SmartZone operation allows
automatic roaming between sites. Enhanced SMARTNET/SmartZone features include
roaming (SmartZone only), telephone, private, and emergency calls, Call Alert
™
, and
messaging. Either analog or digital signaling may be used.