Service Manual

December 2008 5300 ES Series Mobile Radio Service Manual 1-2
General Information
1.1.1 Analog / Digital Operation
The 5300 ES Series mobile radios use a digital signal processor (DSP) to provide IF and
audio filtering and signal modulation functions. This allows operation on the following
types of channels, backwards compatibility with existing equipment, and also the ability to
operate on various types of radio systems.
Narrow Band Analog - FM modulation is used with a maximum deviation of 2.5 kHz.
This mode is usually used in systems with a channel spacing of 12.5 or 15 kHz.
Wideband Analog - FM modulation is used with a maximum deviation of 5 kHz. This
mode is usually used in systems where the channel spacing is 25 kHz or 30 kHz.
Project 25 Digital - Operates on Project 25 compatible systems. The voice is digitized,
error corrected, optionally encrypted, and then transmitted using C4FM modulation
according to the Project 25 standard. This mode uses a channel spacing of 12.5 kHz.
1.1.2 Operating Protocols
The 5300 ES Series mobile radio can be programmed for all the following operating
protocols. The conventional analog protocol is standard and the others are optional
(available only if enabled by factory programming).
• APCO Project 25 (digital) conventional
• APCO Project 25 (digital) trunked
• SMARTNET
®
/SmartZone
®
trunked analog or digital
• Analog conventional
Note Multi-Net operation can be programmed with Ascend models only.
1.1.3 Available Mounting Options
Front Mount - The operating controls are on the front on the radio, so the radio must be
mounted within reach of the user.
Remote Mount, Single Control Unit - The operating controls are located on a remote
mounted control unit. The radio does not have operating controls.
Remote Mount, Dual Controls - A remote control unit is connected to the front mount
radio. This allows control from the front panel and the remote control unit.
Remote Mount, Dual Remote Control Units - Two remote control units are connected
to the remote mount radio. This allows control from both remote control units.