User's Manual

APPLICANT: MOTOROLA SOLUTIONS EQUIPMENT TYPE: ABZ89FC5810B
109AB-5810B
User / Operational Manual
Functional Description / Operation of Modules (Draft)
EXHIBIT D1-6
The following figure shows the information flow through the transceiver control and RF sections for trunked and
conventional operation.
Transceiver Control Board Information Flow
Transceiver RF Board
In addition to DC power conversion/regulation, the XCVR RF board provides circuitry for the following exciter and
receiver functions.
Exciter
The exciter on the XCVR RF board provides the transmitter functions for the base radio. The exciter circuitry generates a
low-level, modulated RF signal that passes to the power amplifier. It supports various modulation types as well as
bandwidths up to 25 kHz, through software programming.
The exciter also provides a controlled output power level to the power amplifier.
Receiver
The receiver provides either single receiver input or dual (HPD or TDMA) receiver inputs for dual diversity. The receiver
also provides enhanced diagnostic capabilities using an on board noise source generator. It includes a wide tuning range
(electronic varactor-tuned) preselector. The preselector is electronically tuned to the desired receive frequency anywhere
between 792–825 MHz, UHF R1 380–435 MHz, UHF R2 435–524 MHz, or VHF 136–174 MHz.
Transceiver External Interfaces
The transceiver external interfaces include seven external ports, a switch and LEDs. If a transceiver option card is part of
the transceiver, there are four additional external ports. See 3.4.7 Connections – Front, page 3-28 for the port connections.
See 10.1 LEDs, page 10-1 for information on the LEDs.
Transceiver Switch
There is one multifunction Reset switch on the front of the transceiver module, accessible through the drop-down door to
the left of the fans. The Reset switch has two functions:
User Action Result
Press switch for less than 1 second Service Mode (LED3 lights amber)
Press switch for more than 3 seconds Transceiver Control Module Reset
Transceiver Reset Switch (viewable through drop-down door)
Transceiver Option Card Intercom Button