Table 3-1. Battery Connector J3; Figure 3-8. Transceiver (Uhf2 / Vhf) Block Diagram (Power And Control Omitted) - Motorola APX 7000 Detailed Service Manual

3-6
Main antenna
Aux port
SP2T
Aux

Figure 3-8. Transceiver (UHF2 / VHF) Block Diagram (Power and Control Omitted)

3.1.1 Interconnections
This section describes the various interconnections for the transceiver board.
3.1.1.1 Battery Connector M101
Battery connector M101 solders to the transceiver printed circuit board. The connector has 5 gold
plated contacts that mate with the battery, two contacts for positive, two for negative and one for the
Dig_Battery_Data. Signal descriptions are in
Pin No.
1
2
3
Log
Amp
SP3T Rf Switch
Digital
RF Atten
SP3T
GPS Di-
coupler
Plexer
Rev
Power
Detector
VHF DIVIDE-BY-2
ND
2 HARMONIC FILTER
*
÷ 2
16.8MHz
TRIDENT IC
LOGIC PRESCALAR
EXPANDER
BUFFER
16.8MHz
BUFFER
UHF2
VHF

Table 3-1. Battery Connector J3

Signal
DC_BATT
Dig_Battery_Data
Ground
Switch
FET
VHF
Harmonic Driver
Filters Amplifier
FET
UHF2
LOOP
VHF TX
FILTER
UHF2 TX
VHF/UHF2 RX
PRE
BUFFER
RX LO
mixer
Table 3-1.
Description
Battery positive terminal, nominally 7.5 Vdc
Battery status, from battery to VOCON
Battery negative terminal, tied to PCB ground
Theory of Operation: Transceiver Board
FGU
Transmitter
Receiver
Indicates Sub-shield
*
TX
BUFFER
TX LO
RX SSI Data
Abacus
RX SSI Clock
RX SSI Frame Sync
2nd
LO