EFJohnson 7780 service manual Table of Contents CONT’D

TABLE OF CONTENTS

TABLE OF CONTENTS (CONT’D)

PCTrunk Software Installation . . . . . . . . . . . . . . 3-1 Connecting RPI To Computer and Transceiver . 3-2 Starting and Exiting . . . . . . . . . . . . . . . . . . . . . . 3-2 Programming File Types . . . . . . . . . . . . . . . . . . 3-2 Help Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Screen Types . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 File Size Indication. . . . . . . . . . . . . . . . . . . . . . . 3-3 Creating and Displaying Systems. . . . . . . . . . . . 3-3

3.2 PROGRAMMING PROCEDURE . . . . . . . . . . 3-3 Preliminary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Programming Radio Wide Parameters . . . . . . . . 3-4 Programming Conventional Channels . . . . . . . . 3-4 Programming SMARTNET/SmartZone Systems 3-4 Programming Radio (Downloading File) . . . . . . 3-4

3.3 MENU COMMANDS . . . . . . . . . . . . . . . . . . . . . 3-4 File Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Radio Type Menu . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Download Menu . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Upload Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Systems Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Window Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Help Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.4 RADIO-WIDE PARAMETER SCREENS. . . . 3-6 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Radio-Wide General screen . . . . . . . . . . . . . . . . 3-6 Radio-Wide Conventional Screen . . . . . . . . . . . 3-8 Radio-Wide SMARTNET/SmartZone Screen . . 3-8 Radio-Wide Portable Options Screen. . . . . . . . . 3-9

3.5PROGRAMMING CONVENTIONAL SYSTEMS

AND CHANNELS . . . . . . . . . . . . . . . . . . . . . . 3-9

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Conventional System General Screen . . . . . . . . 3-9

Setting Up Conventional Channels . . . . . . . . . 3-11

Conventional Channel Screen Parameters . . . . 3-12

3.6PROGRAMMING SMARTNET/SMARTZONE

SYSTEMS AND CHANNELS . . . . . . . . . . . 3-13

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

SMARTNET/SmartZone System Screens

General Screen . . . . . . . . . . . . . . . . . . . . . . . 3-14

Other ID’s Screen. . . . . . . . . . . . . . . . . . . . . 3-15

Interconnect Screen . . . . . . . . . . . . . . . . . . . 3-15

Talk Groups Screen . . . . . . . . . . . . . . . . . . . 3-16

Emergency Settings Screen . . . . . . . . . . . . . 3-16

Lists Screens. . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Setting Up SMARTNET/SmartZone Channels 3-20

SMARTNET/SmartZone Channel Screen

Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

4 CIRCUIT DESCRIPTION

4.1POWER SWITCHING AND REGULATION . 4-1

Power Switching. . . . . . . . . . . . . . . . . . . . . . . . . 4-1 5-Volt Regulators (IC401, IC402) . . . . . . . . . . . 4-1

4.2 SYNTHESIZER DESCRIPTION. . . . . . . . . . . 4-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

VCO (IC3), Buffers (Q10-Q12) . . . . . . . . . . . . . 4-1

VCO And TCXO Modulation . . . . . . . . . . . . . . . 4-2

Synthesizer Chip (IC1) . . . . . . . . . . . . . . . . . . . . 4-2

Lock Detect (Q13). . . . . . . . . . . . . . . . . . . . . . . . 4-2

Charge Pump (Q1, Q2), Loop Filter . . . . . . . . . . 4-2

4.3 RECEIVER CIRCUIT DESCRIPTION. . . . . . 4-3

RF Amplifier (Q1), First Mixer (Q2) . . . . . . . . . 4-3

IF Amplifier (Q2), Limiter/Detector (IC3) . . . . . 4-3

Squelch Circuit (IC4A/B, IC5A). . . . . . . . . . . . . 4-4

4.4 TRANSMITTER DESCRIPTION . . . . . . . . . . 4-4

Amplifier (Q9), Driver (Q8) . . . . . . . . . . . . . . . . 4-4

Antenna Switch and Low-Pass Filter . . . . . . . . . 4-4

Power Control (IC2A/B) . . . . . . . . . . . . . . . . . . . 4-5

4.5 CONTROL LOGIC AND DISPLAY . . . . . . . . 4-5

Control Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Display Assembly Description . . . . . . . . . . . . . . 4-5

4.6 RECEIVE AUDIO PROCESSING . . . . . . . . . 4-5

BandPass Filter (IC101) . . . . . . . . . . . . . . . . . . . 4-5

Expander (IC208) . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Audio Amplifier (IC104-IC106) . . . . . . . . . . . . . 4-8

4.7RECEIVE AND TRANSMIT DATA

PROCESSING . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Receive Data Filter/Detector . . . . . . . . . . . . . . . . 4-8

Transmit Data Filter (IC206B/IC206A) . . . . . . . 4-9

4.8 TRANSMIT AUDIO PROCESSING. . . . . . . . 4-9

Gate (IC204), High-Pass Filter (IC202) . . . . . . . 4-9

Limiter (IC202B). . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Low-Pass Filter (IC205A/B) . . . . . . . . . . . . . . . 4-10

4.9 SMARTNET DATA PROCESSING. . . . . . . 4-10

5BATTERY PACK AND CHARGER INFORMATION

5.1 BATTERY PACK . . . . . . . . . . . . . . . . . . . . . . . 5-1

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Battery Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 RAPID CHARGER . . . . . . . . . . . . . . . . . . . . . . 5-1

6ALIGNMENT PROCEDURE AND PERFORMANCE TESTS

6.1	GENERAL	6-1
	Introduction	6-1
	Test Setup	6-1
	Tune Software	6-2
	Preliminary Setup	6-3
	Main PCTune Screen	6-3
	Removing Transceiver Cover	6-4
6.2 TRANSMIT FREQUENCY AND POWER . .		6-4
	Frequency Adjustment	6-4
	Power Output Adjustment	6-4
	November 1999
iii	Part No. 001-7780-500