EFJohnson 761X, 764X User Manual
Service Manual
VHF 146-174 MHz
761x (VHF)
764x (UHF)
Conventional Mobile
UHF 400-430, 450-47 0, 470-490,
490-512 MHz
45 Watts
Part No. 242-7610-0xx
35 Watts
Part No. 242-7640-0xx
First Printing
November 1998
761x (VHF)
764x (UHF)
CONVENTIONAL
FM TWO-WAY RADIO
VHF 146-174 MHz
45 Watts
UHF 400-430, 450-470, 470-490, or 490-512 MHz
35 Watts
Copyright© 1998 by Transcrypt International Incorporated
Transcrypt offers communication solutions in two core areas: land mobile radio products
and systems, and information security. EFJohnson land mobile radios and systems provides wireless communication for a variety of markets including government, public safety,
and commercial users. Transcrypt’s information security devices utilize sophisticated
scrambling and encryption techniques to protect sensitive voice and data transmissions.
Viking Head/EFJohnson logo and Call Guard® are registered trademarks of Transcrypt
International Incorporated. Smartrunk II™ is a trademark of Smartrunk Systems Inc. All
other company and/or product names used in this manual are trademarks and/or registered trademarks of their respective manufacturer.
Information in this manual is subject to change without notice.
TA BLE OF CONTENTS
1 GENERAL INFORMATION
1.1 SCOPE OF MANUAL
1.2 TRANSCEIVER DESCRIPTION
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 PRODUCT WARRANTY
1.4 PART NUMBER BREAKDOWN
1.5 TRANSCEIVER IDENTIFICATION
1.6 ACCESSORIES
1.7 FACTORY CUSTOMER SERVICE
1.8 FACTORY RETURNS
1.9 REPLACEMENT PARTS
1.10 INTERNET HOME PAGE
. . . . . . . . . . . . . . . . . . . .1-1
. . . . . . . . . . .1-1
. . . . . . . . . . . . . . . . .1-1
. . . . . . . . . . .1-1
. . . . . . . . .1-1
. . . . . . . . . . . . . . . . . . . . . . . . .1-1
. . . . . . . . .1-1
. . . . . . . . . . . . . . . . . . . .1-2
. . . . . . . . . . . . . . . . .1-3
. . . . . . . . . . . . . . . . .1-3
2 INSTALLATION AND DISASSEMBLY
2.1 GENERAL
Scope of Instructions. . . . . . . . . . . . . . . . . . . . . . 2-1
Performance Tests. . . . . . . . . . . . . . . . . . . . . . . . 2-1
Transceiver Programming. . . . . . . . . . . . . . . . . . 2-1
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 TRANSCEIVER INSTALLATION
Selecting Mounting Location . . . . . . . . . . . . . . . 2-1
Installing Mounting Bracket . . . . . . . . . . . . . . . . 2-2
Installing Microphone Hanger . . . . . . . . . . . . . . 2-2
2.3 POWER CABLE INSTALLATION
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Cable Installation . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Power Cable Fuses . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.4 USING AN EXTERNAL SPEAKER
2.5 ACCESSORY CABLE INSTALLATION
2.6 TRANSCEIVER DISASSEMBLY
2.7 2-TONE/5-TONE MODULE
INSTALLATION
Installation Procedure . . . . . . . . . . . . . . . . . . . . . 2-5
2-Tone Programming . . . . . . . . . . . . . . . . . . . . . 2-5
5-Tone Programming . . . . . . . . . . . . . . . . . . . . . 2-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
. . . . . . . . . .2-1
. . . . . . . . .2-2
. . . . . . . .2-3
. . . .2-3
. . . . . . . . . .2-4
. . . . . . . . . . . . . . . . . . . . . . .2-5
Adjusting Squelch Level. . . . . . . . . . . . . . . . . . . 3-3
Bank Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Automatic Scan Enable. . . . . . . . . . . . . . . . . . . . 3-4
Backlight On-Off. . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Beep On-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.4 RECEIVING AND PLACING CALLS
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Receiving a Call . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Placing a Call . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Monitoring Before Transmitting. . . . . . . . . . . . . 3-4
Time-Out Timer . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.5 PROGRAMMABLE FUNCTIONS
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Backlight On-Off. . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Bank Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Beep On-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Call Guard Tone Select. . . . . . . . . . . . . . . . . . . . 3-6
Channel Select. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
DTMF Number Select. . . . . . . . . . . . . . . . . . . . . 3-6
Emergency Key. . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Lock Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Monitor Mode Select. . . . . . . . . . . . . . . . . . . . . . 3-6
Output Power Select . . . . . . . . . . . . . . . . . . . . . . 3-6
Priority Channel Select . . . . . . . . . . . . . . . . . . . . 3-6
Receive Attenuate . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Scan Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Scan List Programming. . . . . . . . . . . . . . . . . . . . 3-7
Talk-Around Select. . . . . . . . . . . . . . . . . . . . . . . 3-7
2-Tone Calling Features . . . . . . . . . . . . . . . . . . . 3-7
5-Tone Calling Features . . . . . . . . . . . . . . . . . . . 3-7
Wide/Narrow Band Select. . . . . . . . . . . . . . . . . . 3-7
3.6 CHANNEL SCAN
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Scan Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Priority Channel Sampling . . . . . . . . . . . . . . . . . 3-8
. . . . . . . . . . . . . . . . . . . . . . . 3-7
. . . . . . . . . 3-5
4 PROGRAMMING
. . . . . . 3-4
3 OPERATION
3.1 FEATURES
3.2 CONTROLS AND DISPLAY
Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . 3-2
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.3 BASIC OPERATION
Turning Power On and Off. . . . . . . . . . . . . . . . . 3-2
Entering a Password . . . . . . . . . . . . . . . . . . . . . . 3-3
Volume Level Adjustment . . . . . . . . . . . . . . . . . 3-3
Power-On Menu . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . 3-3
November 1998
Part No. 001-7600-001
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
. . . . . . . . . . . . . .3-2
. . . . . . . . . . . . . . . . . . . . .3-2
4.1 GENERAL
Programming Setup. . . . . . . . . . . . . . . . . . . . . . . 4-1
Programming Cables. . . . . . . . . . . . . . . . . . . . . . 4-1
Programming Software . . . . . . . . . . . . . . . . . . . . 4-1
4.2 STARTING THE PROGRAM
4.3 SPECIAL KEYS AND FUNCTIONS
4.4 MENU FLOW
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
File Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Screen Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Program Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Print Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Model Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
ii
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
. . . . . . . . . . . . . 4-2
. . . . . . . 4-2
TABLE OF CONTENTS (CONT’D)
4.5 UNIQUE PMR (EUROPEAN) SCREENS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Unique PMR Screens . . . . . . . . . . . . . . . . . . . . 4-15
4.6 CLONING (PROGRAMMING ONE
TRANSCEIVER WITH ANOTHER)
. .4-15
. . . . .4-16
5A VHF (7610) CIRCUIT DESCRIPTION
5.1 VHF RECEIVER CIRCUIT
Antenna Switching Circuit. . . . . . . . . . . . . . . . . 5-1
RF Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
First Mixer And First IF Circuits . . . . . . . . . . . . 5-1
Second IF and Demodulator Circuits. . . . . . . . . 5-1
Audio Amplifier Circuit. . . . . . . . . . . . . . . . . . . 5-2
Receiver Mute Circuit . . . . . . . . . . . . . . . . . . . . 5-2
5.2 VHF TRANSMITTER CIRCUIT
Microphone Amplifier Circuit . . . . . . . . . . . . . . 5-3
Modulation Circuit . . . . . . . . . . . . . . . . . . . . . . . 5-3
Transmit Driver Circuit . . . . . . . . . . . . . . . . . . . 5-3
Power Amplifier Module . . . . . . . . . . . . . . . . . . 5-3
APC Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3 VHF PLL CIRCUIT
PLL Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
VCO Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.4 VHF IC PIN DESCRIPTIONS
VHF Power Supply. . . . . . . . . . . . . . . . . . . . . . . 5-5
VHF CPU IC1 Port Allocation. . . . . . . . . . . . . . 5-5
VHF I/O Expander IC5 (Main Unit) . . . . . . . . . 5-6
VHF Port Expander IC11 (Main Unit). . . . . . . . 5-6
. . . . . . . . . . . . . . . . . . . . . .5-4
. . . . . . . . . . . . . . . .5-1
. . . . . . . . . . . .5-3
. . . . . . . . . . . . .5-5
5B UHF (7640) CIRCUIT DESCRIPTION
5.5 UHF RECEIVER CIRCUIT
Antenna Switching Circuit. . . . . . . . . . . . . . . . . 5-7
RF Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
First Mixer And First IF Circuits . . . . . . . . . . . . 5-7
Second IF and Demodulator Circuits. . . . . . . . . 5-7
Audio Amplifier Circuit. . . . . . . . . . . . . . . . . . . 5-8
Receiver Mute Circuit . . . . . . . . . . . . . . . . . . . . 5-8
5.6 UHF TRANSMITTER CIRCUIT
Microphone Amplifier Circuit . . . . . . . . . . . . . . 5-9
Modulation Circuit . . . . . . . . . . . . . . . . . . . . . . . 5-9
Transmit Driver Circuit . . . . . . . . . . . . . . . . . . . 5-9
Power Amplifier Module . . . . . . . . . . . . . . . . . . 5-9
APC Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
5.7 UHF PLL CIRCUIT
PLL Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
VCO Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
UHF Power Supply. . . . . . . . . . . . . . . . . . . . . . 5-11
UHF CPU IC1 Port Allocation. . . . . . . . . . . . . 5-11
UHF I/O Expander IC12 (Main Unit) . . . . . . . 5-12
UHF Port Expander IC13 (Main Unit). . . . . . . 5-12
. . . . . . . . . . . . . . . . . . . . .5-10
. . . . . . . . . . . . . . . .5-7
. . . . . . . . . . . .5-9
6 ADJUSTMENT PROCEDURE
6.1 GENERAL
Suggested Test Equipment . . . . . . . . . . . . . . . . . 6-1
Test Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Test Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Computer-Aided Tuning. . . . . . . . . . . . . . . . . . . 6-3
Reprogramming if EEPROM is Replaced or
Error Occurs . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2 PRELIMINARY SETUP
6.3 PLL ADJUSTMENT (VHF MODELS)
6.4 TRANSMITTER ADJUSTMENTS
(VHF MODELS)
Reference Frequency . . . . . . . . . . . . . . . . . . . . . 6-4
Output Power Adjust. . . . . . . . . . . . . . . . . . . . . . 6-5
FM Deviation Adjust . . . . . . . . . . . . . . . . . . . . . 6-5
DTCS Waveform Adjust. . . . . . . . . . . . . . . . . . . 6-6
6.5 RECEIVER ADJUSTMENTS
(VHF MODELS)
Bandpass Filter Adjust . . . . . . . . . . . . . . . . . . . . 6-6
Squelch Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Beep Tone Level. . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6.6 PLL ADJUSTMENT (UHF MODELS)
6.7 TRANSMITTER ADJUSTMENTS
(UHF MODELS)
Reference Frequency . . . . . . . . . . . . . . . . . . . . . 6-8
Output Power Adjust. . . . . . . . . . . . . . . . . . . . . . 6-8
FM Deviation Adjust . . . . . . . . . . . . . . . . . . . . . 6-8
DTCS Waveform Adjust. . . . . . . . . . . . . . . . . . . 6-9
6.8 RECEIVER ADJUSTMENTS
(UHF MODELS)
Bandpass Filter Adjust . . . . . . . . . . . . . . . . . . . 6-10
Squelch Adjust . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Beep Tone Level. . . . . . . . . . . . . . . . . . . . . . . . 6-10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
. . . . . . . . . . . . . . . . . . .6-4
. . . . . . . . . . . . . . . . . . . . . . . .6-4
. . . . . . . . . . . . . . . . . . . . . . .6-6
. . . . . . . . . . . . . . . . . . . . . . . .6-8
. . . . . . . . . . . . . . . . . . . . . . .6 -10
7 PARTS LIST
VHF (761x) Models
Main Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Front Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18
Chassis Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-20
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . .7-21
UHF (764x) Models
Main Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
Front Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18
Chassis Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-20
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . .7-22
. . . . . . .6-4
. . . . . .6-8
November 1998
iii
Part No. 001-7600-001
TABLE OF CONTENTS (CONT’D)
8 SCHEMATIC DIAGRAMS AND
COMPONENT LAYOUTS
VHF (761x) Models
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Transistor and Diode Basing. . . . . . . . . . . . . . . . .8-2
Main Unit Board Bottom View. . . . . . . . . . . . . . .8-3
Main Unit Board, Top View. . . . . . . . . . . . . . . . .8-4
Main Unit Schematic . . . . . . . . . . . . . . . . . . . . . .8-5
Front Unit PC Board. . . . . . . . . . . . . . . . . . . . . .8-10
Front Unit Schematic . . . . . . . . . . . . . . . . . . . . .8-11
UHF (764x) Models
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
Transistor and Diode Basing. . . . . . . . . . . . . . . .8-12
Main Unit Board Bottom View. . . . . . . . . . . . . . .8-7
Main Unit Board, Top View. . . . . . . . . . . . . . . . .8-8
Main Unit Schematic . . . . . . . . . . . . . . . . . . . . . .8-9
Front Unit PC Board. . . . . . . . . . . . . . . . . . . . . .8-10
Front Unit Schematic . . . . . . . . . . . . . . . . . . . . .8-11
LIST OF TABLES
LIST OF FIGURES
2-1 Installation Components . . . . . . . . . . . . . . . . . . 2-1
2-2 Mounting Bracket Installation. . . . . . . . . . . . . . 2-2
2-3 Accessory Cable Installation. . . . . . . . . . . . . . . 2-3
2-4 Cover and Front Panel Removal . . . . . . . . . . . . 2-4
2-5 PC Board Screws. . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-6 Removing PC Board . . . . . . . . . . . . . . . . . . . . . 2-4
2-7 2/5-Tone Module Installation . . . . . . . . . . . . . . 2-5
3-1 7600 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4-1 Programming Setup. . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Memory Channel Screen (PMR Models) . . . . 4-17
5-1 Second IF System IC3 (VHF). . . . . . . . . . . . . . 5-2
5-2 Audio Switching and Amplifier Circuit (VHF) 5-2
5-3 PLL Circuit (VHF) . . . . . . . . . . . . . . . . . . . . . . 5-4
5-4 Second IF System IC1 (UHF). . . . . . . . . . . . . . 5-8
5-5 Audio Switching and Amplifier Circuit (UHF) 5-8
5-6 PLL Circuit (UHF) . . . . . . . . . . . . . . . . . . . . . 5-10
6-1 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2 Screen Display Example . . . . . . . . . . . . . . . . . . 6-2
6-3 Test Cable Schematic . . . . . . . . . . . . . . . . . . . . 6-2
6-4 VHF Adjustment Points . . . . . . . . . . . . . . . . . . 6-5
6-5 Beep Tone Level Adjustment . . . . . . . . . . . . . . 6-7
6-6 UHF Adjustment Points . . . . . . . . . . . . . . . . . . 6-9
1-1 75xx Accessories . . . . . . . . . . . . . . . . . . . . . . . .1-2
3-1 Option Key Programmable Functions . . . . . . . .3-5
4-1 Memory Channel Screen Description
(LMR Models) . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4-2 Key and Display Assign Screen Description . . .4-7
4-3 DTMF Autodial Screen Description . . . . . . . . . .4-9
4-4 Continuous Tone Screen Description . . . . . . . .4-10
4-5 Scan Function Screen Description . . . . . . . . . .4-10
4-6 2-Tone Code Channel Screen Description . . . .4-11
4-7 Common Screen Description . . . . . . . . . . . . . .4-13
4-8 Expert Screen Description . . . . . . . . . . . . . . . .4-14
6-1 VHF Test Frequencies . . . . . . . . . . . . . . . . . . . . .6-3
6-2 UHF Test Frequencies . . . . . . . . . . . . . . . . . . . . .6-3
November 1998
Part No. 001-7600-001
iv
SECTION 1 GENERAL INFORMATION
242 - 7 6 x x - 0 x x
Band
Config.
Freq Range
0 = Half duplex, dual
IF, high power
1 = VHF
4 = UHF
0 = Full band
1 = 400-430 (UHF)
3 = 146-174 (VHF)
450-470 (UHF)
4 = 470-490 (UHF)
5 = 488-512 (UHF)
2 = Std mic
3 =
With DTMF
mic
7 = w/o mic
NOTE: Not all configurations
are available.
Type
Signaling
0 = Conventional only
76xx 0 A 23 8 J 12345
Model Revision
Letter
Manufacture
Date
Warranty
Number
Week No.
of Year
Last Digit of Year
J = Japan
8th Digit
of P.N.
PlantFrom P.N.
GENERAL INFORMATION
1.1 SCOPE OF MANUAL
This service manual contains operation, installation, programming, alignment, and service information
for the EFJohnson® 7610 and 7640 mobile transceivers.
1.2 TRANSCEIVER DESCRIPTION
1.2.1 GENERAL
The 7600-series mobile transceivers operate on
conventional (non-trunked) channels. The 7610 operates in the VHF fr equency range of 146- 174 MHz , an d
the 7640 operates in the UHF frequency range of
400-430, 450-470, 470-490, or 488-512 MHz. Up to
32 channels can be programmed. Power output is user
selectable or fixed for the following lev els. Refer to
Section 3.1 for more info rmation on features.
Model High Low 1 Low 2
7610 (VHF) 45W 25W 4.5W
7640 (UHF) 35W 20W 3.5W
These transceivers are digitally synthesized and
microprocessor controlled. Transceiver programming
is performed using a PC-compatible computer, a special EFJohnson programming cable, and programming software (see Table 1-1). The alignment procedure is performed using this same hardware setup, a
fabricated test cable, and special Adjust software
included with the programming software (see
Section 4).
1.4 PART NUMBER BREAKDOWN
The following is a breakdown of the part number
used to identify this transceiver.
1.5 TRANSCEIVER IDENTIFICATION
The transceiver identification number is printed
on a label that is attached to the chassis. The following
information is contained in the identification number:
1.3 PRODUCT WARRANTY
The warranty statement for this transceiver is
available from your product supplier or from the Warranty Department, EFJohnson, 299 Johnson Avenue,
P.O. Box 1249, Waseca, MN 56093-0514. This information may also be requested from the Warranty
Department by phone as described in Section 1.7. The
Warranty Department may also be contacted for Warranty Service Reports, claim forms, or any other questions conc erning warranties or warranty service.
1.6 ACCESSORIES
The accessories availab le for this transceiver are
listed in Table 1-1.
1.7 FACTORY CUSTOMER SERVICE
The Customer Service Department of EFJohnson
provides customer assistance on technical problems
and the availability of local and factory repair facilities. Regular Customer Service hours are 7:30 AM. -
November 1998
1-1
Part No. 001-7600-001
GENERAL INFORMATION
5:30 PM. Central Time, Monday - Friday. The
Customer Service Department can be reached using
one of the following telephone numbers:
Toll-Free: (800) 328-3911
(From within continental United States only)
International: (507) 835-6911
FAX: (507) 835-6969
E-Mail: First Initial/Last Name@efjohnson.co m
(You need to know the name of the person you want to
reach. Example: jsmith@efjohnson.com)
NOTE: Emergency 24-hour technical support is also
available at the 800 and preceding numbers during off
hours, holidays, and weekends.
When your call is answered at EFJohnson, you
will hear a brief mess age informing you of numbers
that can be entered to reach various departments. This
number may be entered during or after the message
using a tone-type telephone. If you have a pulse-type
telephone, wait until the message is finished and an
operator will come on the line to assist you. When you
enter some numbers, another number is requested to
further categorize the type of information you need.
You ma y also contac t the Customer Service
Department by mail. Please include all information
that may be helpful in sol vi ng your problem. The mailing address is as follows:
EFJohnson
Customer Service Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.8 FACTORY RETURNS
Repair service is normal ly availa ble through local
authorized EFJohnson Land Mobile Radio Service
Centers. If local service is not ava ilable, the equipmen t
can be returned to the fac tory for repair. However, it is
recommended that you contact the Customer Service
Department before returning equipm ent because a service representative may be able to suggest a solution
Table 1-1 75xx Accessories
Accessory Part No.
Mounting bracket 585-7600-040
DC cable assembly 585-7600-029
Mounting screws and fuses 585-7600-041
Microphone hanger 023-3514-001
Mic hanger ground wire 023-7171-911
Function name stickers 585-7600-042
Microphone, standard 585-7600-020
Microphone, DTMF 585-760 0-0 22
2-Tone/5-tone module kit 585-7600-026
5”, 4.7-ohm, 15W external speaker 250-0151-010
Compact speaker 585-7600-023
Accessory/data cable (DB-9 connector) 585-7600-027
Programming Accessories
Programming software, 3-1/2 disk 585-7600-030
Programming cable, computer-adapter 585-7500-031
Adapter cable, prog cable-xcvr 585-7600-031
Replication (cloning) cable 597-2002-200
DB-9 M to DB-25 F adapter 515-9000-015
to the problem so that return of the equipment would
not be necessary.
Be sure to fill out a Factory Repai r Request Form
#271 for each unit to be repaired, whether it is in or
out of warranty. These forms are avai lable free of
charge by calling Customer Service (see Section 1.7)
or by requesting them when you send a unit in for
repair. Clearly describe the difficulty experienced in
the space provided and also note any prior physical
damage to the equipment. Then include a form in the
shipping container with each unit. Your telephone
number and contact name are important because there
are times when the technicians have specific questions
that need to be answered in order to completely identify and repair a problem.
When returning equipment for repair, it is also a
good idea to use a PO number or some othe r reference
number on your paperwork in case you need to call the
repair lab about your unit. These numbers are referenced on the repair order and it makes it easier and
faster to locate your unit in the lab.
November 1998
Part No. 001-7600-001
1-2
GENERAL INFORMATION
Return Authorization (RA) numbers are not necessary unless you have been given one by the Field
Service Department. RA numbers are required for
exchange units or if the Field Service Department
wants to be aware of a specific problem. If you have
been given an RA number, reference this number on
the Factory Repair Request Form sent with the unit.
The repair lab will then contact the Field Service
Department when the unit arrives.
1.9 REPLACEMENT PARTS
Replacement parts can be ordered directly from
the Service Parts Departmen t. To order parts by phone,
dial the toll-free number as described in
Section 1.7. When ordering, please supply the part
number and quantity of each part ordered. EFJohnson
dealers also need t o g ive t heir a ccount number. If there
is uncertainty a bout t he part number, include the desig-
nator (C512, for example) and the model number of
the equipment the part is from.
You may also send your order by mail or FAX.
The mailing address i s as follows and the FAX number
is shown in Section 1.7.
EFJohnson
Service Parts Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.10 INTERNET HOME PAGE
EFJohnson has a si te on the World Wide Web that
can be accessed for information on the company and
such things as products, systems, and regulations. The
address is h ttp://www.efjohnson.com.
1-3
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GENERAL INFORMATION
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Part No. 001-7600-001
1-4
GENERAL INFORMATION
7610 (VHF) AND 7640 (UHF) MOBILE SPECIFICATIONS
The following are general specifications intended for use in testing and servicing this transceiver. For current
advertised specifications, refer to the specification sheet available from your sales representative. Values are
typical and are subject to change without notice.
GENERAL
Frequency Range VHF: 146-174 MHz
UHF: 400-430 MHz, 450-470 MHz, 470-490 MHz, or 488-512 MHz (some
performance degradation from 488-490 MHz with 488-512 MHz models)
Operating Modes Conventional (non-trunked), Tone and digital Call Guard® squelch
Channels 32 maximum (2 banks x 16 channels available)
Transmit/Receive Separation Any frequency within the range
Channel Spacing (dual IF Models) VHF - 12.5 kHz (narrow band) and 30 kHz (wideband)
UHF - 12.5 kHz (narrow band) and 25 kHz (wideband)
Maximum Deviation 12.5/15 kHz channel spacing - 2.5 kHz maximum
25 kHz channel spacing - 5.0 kHz maximum
Frequency Stability 5.0 PPM (VHF), 2.5 PPM (UHF) from –22° to +140° F (–30° to +60° C)
Dimensions (w/o controls) 1.6” H x 5.5” W x 6.7” D (4.1 cm x 13.9 cm x 17.0 cm)
Weight 2 lb. 11 oz. (1.22 kg)
Supply Voltage 13.6 volts DC nominal (12-volt, negative ground vehicle electrical system)
Current Drain (maximum) Standby - 200 mA standby
Receive (rated audio out) - 700 mA
Medium Tx Power - 6.0 A (VHF), 7.0 A (UHF)
High Tx Power - 15 A max/10 A typ (VHF), 11 A max/8 A typ (UHF)
FCC Compliance Parts 15 and 90
RECEIVER
Sensitivity (12 dB SINAD) 0.25 µV
Selectivity 70 dB at 25 kHz, 60 dB at 12.5 kHz
Spurious and Image Rejection 70 dB
Intermodulation 65 dB
Hum and Noise 46 dB at 25 kHz, 40 dB at 12.5 kHz
Maximum Frequency Spread Any spread within the range
Audio Power Output 3.5 W into 4-ohm load
Audio Distortion Less than 10% at 1 kHz with 60% deviation
Audio Response +2, –8 dB at 6 dB per octave de-emphasis
RF Input Impedance 50 ohms
TRANSMITTER
RF Power Output VHF: 45W (high), 25W (low 1), 4.5W (low 2)
UHF: 35W (high), 20W (low 1), 3.5W (low 2)
Spurious and Harmonic Emissions 70 dB
FM Hum and Noise 46 dB at 25 kHz, 40 dB at 12.5 kHz
Audio Modulation 12.5 kHz - 11K0F3E, 25 kHz - 16K0F3E
Audio Distortion Less than 5% at 1 kHz with 40% modulation
Audio Frequency Response +2, –8 dB at 6 dB per octave pre-emphasis
Maximum Frequency Spread Any spread within the band
RF Output Impedance 50 ohms
Duty Cycle 20% TIA
1-5
November 1998
Part No. 001-7600-001
GENERAL INFORMATION
NOTES
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Part No. 001-7600-001
1-6
SECTION 2 INSTALLATION AND DISASSEMBLY
Optional Accessory Cable
P.N. 585-7600-027
DB-9 Female
INSTALLATION AND DISASSEMBLY
External Spkr Jack
UHF-Type
Ant Jack
10-Ft. Power Cable
Optional External Speaker
P.N. 250-0151-010
Figure 2-1 Installation Components
2.1 GENERAL
2.1.1 SCOPE OF INSTRUCTIONS
Since each installation is somewhat unique, the
following install at ion instructions are intended only as
a general guide to installing this transceiver.
2.1.2 PERFORMANCE TESTS
Although each transceiver is carefully tested at
the factory before shipment, it is good practice to verify proper operation before it is placed in service.
Important checks are receiver sensitivity and transmitter frequency, deviation, and power output.
Red (+)
Black (–)
20A Fuses
factory test channels and other test parameters when
they are shipped. The included labels should be
attached to the option keys to indicate the function.
2.1.4 POWER SOURCE
This transceiver must be connect ed to a nominal
12 VDC, negative ground vehicle electrical system
(negative battery terminal connected directly to the
chassis). If the vehicle has some other type of electrical system, a suitable voltage converter is required.
2.2 TRANSCEIVER INSTALLATION
2.2.1 SELECTING MOUNTING LOCATION
2.1.3 TRANSCEIVER PROGRAMMING
The transceiver needs t o be pr ogrammed be fore i t
is placed in service. Programming instructions are
located in Section 4. Transceivers normally contain
This transceiver is designed for mounting in a
location within convenient reach of the operator such
as the dash, console, or floor. Since the mounting location can affect safe operation of the vehicle, observe
the following precautions:
November 1998
2-1
Part No. 001-7600-001
INSTALLATION AND DISASSEMBLY
Figure 2-2 Mounting Bracket Installation
WARNING
•
Do not mount the transceive r where it may int erfere with the operation of vehicle controls.
•
Do not mount the t ransceiver whe re the use r cannot easily reach the controls and view the
display.
•
Do not mount the t ransceiver where it may cause
additional injury in case of an accident.
•
Air bags inflate with great force. Therefore, do
not mount this transceiver in the deployment
area of an air bag. In addition, do not place other
objects in the deployment area or other locations
where they could unintentionally move into the
deployment area.
2.2.2 INSTALLING MOUNTING BRACKET
2.2.3 INSTALLING MICROPHONE HANGER
Install the included microphone hanger in a convenient location. For proper operation of functions
such as monitoring and scanning, the hanger may need
to be connected to chassis ground. If required, ground
the hanger using the included grounding wire.
2.3 POWER CABLE INSTALLATION
2.3.1 GENERAL
It is recommended that both wires of the power
cable be connected directly to the vehicle battery. Connection of either wire to other points m ay result in
increased interference from the vehicle’s electrical
system. If noise is sti ll a prob lem, t ry inst alli ng a noise
filter.
Check the area behind the intended mounting
location for wiring, brake and gas lines, or other components that could be damaged when the mounting
screws are installed. Th en install the b racket and tra nsceiver as shown in Figure 2-2. Both standard and selftapping screws are included for installing the bracket.
November 1998
Part No. 001-7600-001
2.3.2 CABLE INSTALLATION
1. Before starting power cable installation, it is good
practice to remove the negative cable from the battery to prevent damage from accidental short
circuits.
2-2
INSTALLATION AND DISASSEMBLY
DB-9 Female Connecto r
Outside View
2. Route the red and black wires from the transceiver
to the batte ry. Connect the red wire to the positive
(+) terminal and the black wire to the negative (–)
terminal.
3. Plug the cable into the pigtai l coming from the transceiver and reconnect the negative battery cable.
4. Install the antenna according to the manufacturer’s
instructions. The transceiver has a standard UHF
connector. Check VSWR. Reflected power should
be less than 4% of forward power (VSWR less than
1.5 to 1).
2.3.3 POWER CABLE FUSES
Each power cable wire is protected by a 20ampere fuse. Thes e fuse s are inspec te d and ch anged a s
shown below. If a fuse blows, locate the cause if possible and replace it with one of the same rating.
input that can be used to control the backlight (see
Section 3.3.9). This cable is installed as shown in
Figure 2-3.
This cable has a standa rd DB-9 female connector
for interfac ing to external equipment. The pin numbering and functions are as follows:
DB-9 Pin Function
1 LCD backlight control in
2AF out
3 Detected AF out
4 Modulati on in
5 PTT control in
6 Horn drive control out
7 AF ground
8 Detected AF ground
9 Modulati on ground
Changing 20-Ampere Power Cable Fuses
2.4 USING AN EXTERNAL SPEAKER
An external speaker can be plugged into the
external speaker jack on the back of the transceiver.
This speaker should have an impedance of 4-8 ohms
and a power handling capability of at least 3.5 watts.
The internal speaker is a utomatically disabled when a
speaker is plugged into this jack. The external speaker
jack is a standard 1/8-inch, two-conductor phone jack.
2.5 ACCESSORY CABLE INST ALLATION
Optional Accessory Cable, Part No. 585-7600027, can be used for connecting accessories such a
horn alert or modem to the transceiver. It also has an
Figure 2-3 Accessory Cable Installation
2-3
November 1998
Part No. 001-7600-001
INSTALLATION AND DISASSEMBLY
2.6 TRANSCEIVER DISASSEMBLY
Removing Bottom Cover and Front Panel
1. Remove the bottom cover b y removi ng four sc rews
(A) as shown in Figure 2-4.
2. Remove the front panel by removing two screws
(B).
Figure 2-4 Cover and Front Panel Removal
Removing PC Board
3. Remove ten screws (C) a nd t wo c li ps (D) as shown
in Figure 2-5.
4. Remove shield (E).
5. Unsolder the antenna connector at three points (F).
Figure 2-5 PC Board Screws
Figure 2-6 Removing PC Board
6. Lift the front of t he PC bo ard assembl y as shown in
Figure 2-6 and pull it out.
November 1998
Part No. 001-7600-001
2-4
INSTALLATION AND DISASSEMBLY
2.7 2-T ONE/5-TONE MODULE INSTALLA TION
2.7.1 INSTALLATION PROCEDURE
1. Turn power off and disconnect the power cable.
2. Remove the bottom cover by removing the four
screws (A) shown in Figure 2-5.
3. Install the module as shown in Figure 2-7. The
included foam pad is not used with this transceiver.
Screen Menu
program an option key or the microph one hanger
for the monitor function s o that the decoder can
be re-activ ated when the call is complete (see
Table 4-2).
2.7.3 5-TONE PROGRAMMING
Program the transceiver for operation with a fivetone module as described in Section 4. Screens that
need to be programmed with five-tone decoder information are as follows. Refer to on-line help for information on parameters in these screens (press F1 wit h
parameter selected).
Model Menu
Section 4.4.6).
Select the following in the Screen Menu:
•
“Rx Code CH” and program the information in
the screen (see Section 4.5.2).
- Select “Key & Displa y Assign” and
- “PMR” must be selected (see
Figure 2-7 2/5-Tone Module Installation
2.7.2 2-TONE PROGRAMMING
Program the transceiver for operation with a twotone decoder as described in Section 4. Screens that
need to be programmed with two-tone decoder information are as follows. Refer to on-line help for more
information on parameters in these screens (press F1
with parameter selected).
Model Menu
Section 4.4.6).
Screen Menu
program the information in the screen (see
Table 4-6).
Screen Menu
gram the information under “2Tone Dec” for
each channel on which the decoder wil l be use d
(see Table 4-1).
- “LMR” must be selected (see
- Select “2Tone Code CH” and
- Select “Memory Channel” and pro-
•
“Tx Code CH” and program the information in
the screen (see Section 4.5.2).
•
“User Tone” and program the info rmatio n i n the
screen (see Section 4.5.2).
•
“Memory CH” and program the parameters in
this screen that are related to 5-tone operation on
the channel (see Fi gure 4-2).
NOTE: If performing the deviation adjustment in
the next section, the long tone must be turned on in
RPT/STN/ID on the Memory Channel screen.
•
“Key & Display Assign” and program Tx Code
and Call switches for use in transmitting 5-tone
codes.
Setting 5-Tone Deviation
The only adjustment on the 2/5-tone module is a
potentiometer for setting the transmit tone deviation
for 5-tone operation. This control is factory preset and
should not require readjustment in the field. However,
if adjustment is required, proceed as follows:
2-5
November 1998
Part No. 001-7600-001
INSTALLATION AND DISASSEMBLY
1. Monitor the transmi t si gnal wi th a communications
monitor. Set it for HPF = Off, LPF = 20 kHz, Deemphasis = Off, and Level = (P-P)/2.
2. Select a channel near the ce nter of the band and turn
a long tone on (see precedi ng “NOTE”) by pressin g
the appropriate front panel key.
3. Adjust potentiometer R18 (DEV) on the module for
the following deviation:
25 kHz Channel Spacing - ±3.5 kHz
20 kHz Channel Spacing - ±2.8 kHz
12.5 kHz Channel Spacing - ±1.7 kHz
4. Check channels on each end of the operating band to
make sure deviation is within the following
limits. If not, repeat preceding adjustment.
25 kHz Channel Spacing - ±3.0 to 5.0 kHz
20 kHz Channel Spacing - ± 2.4 to 4.0 kHz
12.5 kHz Channel Spacing - ±1.5 to 2.5 kHz
NOTE: It is recommended that scanning not be used
with these options because in may cause part or all of
the tone burst to be missed.
November 1998
Part No. 001-7600-001
2-6
SECTION 3 OPERATION
OPERATION
Volume
Down
VolumeUpTransmit
Microphone
Connector
Busy
Indicator
Scan List
Indicator
* The Channel Up/Down switches can also be programmed for other functions.
Indicator
Programmable Option Switches
Bell
Indicator
Monitor
Indicator
Alphanumeric
Display
Channel
Up*
Channel
Down*
Power
Switch
Figure 3-1 7600 Front Panel
3.1 FEATURES
•
Up to 32 channels programmable
•
Multi-tone (CTCSS) and/or Mul ti-code (CDCSS)
Call Guard® squelch programmable
•
VHF and UHF, wideband and narrowband models
available
•
Up to 45 watts VHF and 35 watts UHF transmitter
power output
•
Seven-character alphanumeric display with backlight
•
Six programmable option ke ys
•
Busy indicator
•
Normal and priority scan to ensure that calls are not
missed
•
Up to five different user programmable scan lists
selectable
•
Bank select available (up to two banks with sixte en
channels each)
•
User selectable power output available
•
DTMF microphone optional
•
2-tone/5-tone signaling optional
NOTE: Some of the preceding features are available
only if programmed.
3-1
November 1998
Part No. 001-7600-001
OPERATION
3.2 CONTROLS AND DISPLAY
3.2.1 FRONT PANEL CONTROLS
Power Switch (
- Press this switch to turn power
)
on and press and hold it to turn power off. The transceiver may be progr ammed so th at a passwor d must be
entered to allow operation. Refer to Section 3.3.2 for
more information.
Volume Up/Down Keys ( ) - Adjust the volume level up or down in up to 32 steps. The minimum
selectable volume level can be set as desc ribed in
Section 3.3.3.
Up/Down Keys ( ) - These keys may be programmed to select the next higher or lower channel or
for other functio ns. Ref er to th e descri ption s in Sect ion
3.5 for more information.
Microphone Connector - Connection point for the
microphone. Do not connect microphones other than
standard microphone P.N. 589-7600-020 and DTMF
microphone P.N. 589-7600-022 to this transce iver. The
pin assignments could be different and damage to the
microphone or transceiver may result.
F1/F2/F3/F4 - These keys ca n be programmed to control any of the fu nctions desc ribed in Section 3.5. Place
the applicable included label on the switch to indicate
its function.
Monitor Indicator ( ) - Indicates that the monitor
mode is enabled. This mode disables coded squelch
control so that all messages occurring on the channel
are heard. Refer Section 3.4.4 for more information.
Display - This seven-character display indicates the
selected channel, status information, and error conditions. If information in this display begins flashing, an
error condition is indicated. Two possible causes are a
defective antenna or a battery voltage below 8 VDC.
3.2.3 BACK PANEL
External Speaker Jack - Miniature phone jack for
connecting an optional 4-8 ohm external speaker. The
internal speaker is automatically disabled when a
speaker is p lugged into this jack.
Antenna Jack - UHF-type jack for connecting the
antenna.
DC Power Cable - Connects the transceiver to a nominal 12 VDC, negative ground vehicle power source.
Refer to Section 2-1 for more information.
Accessory Cable - This optional cable is used to connect accessories such as a horn alert and modem to the
transceiver. Refer to Section 2-1 for more information.
Ext Speaker
Jack
Antenna
Jack
3.2.2 DISPLAY
Transmit Indicator ( ) - Indicates that the transmitter is keyed or the 5-t one code is being sent (if appli cable). If this indicator is flashing, the internal
temperature is high and the tr ansmitter power output is
being cut back. Normal operation automatically
resumes when the tempera t ure returns to the normal
range.
Busy Indicator ( ) - Indicates the currently selected
channel is busy (see Section 3.4.4).
Bell Indicator ( ) - Appears or flashes when a
5-tone call is detected that the transceiver is
programmed to receive.
November 1998
Part No. 001-7600-001
Optional
Accessory Cable
Transceiver Back Panel
3.3 BASIC OPERATION
3.3.1 TURNING POWER ON AND OFF
When power is turned on by pressing the
POWER switch, a tone sounds and an opening message is displayed if programmed. The transceiver is
3-2
DC Power
Cable
OPERATION
then ready to be used. To turn power off, press and
hold the POWER switch until power turns off.
3.3.2 ENTERING A PASSWORD
The transceiver may be programmed so that a
password must be entered before the transceiver can
be used. When power is then turned on, “PWORD” is
displayed and the fo ur- di g it pas sc ode mus t be entered.
This code is entered using the F1-F4 and channel
down ( ) keys. The number entered by each key is
as follows. The numbers in a block are detected as the
Key
Number
Entered
F
0
5
F
1
1
6
F
2
2
7
F
3
4
3
8
4
9
same. For example, “1234” is the same as “6789”. If
the “PWORD” indication does not turn off after entering four digits, you may have entered an incorrect
number. Cycle transceiver power and try again.
3.3.3 VOLUME LEVEL ADJUSTMENT
and then again to return to the normal channel
display.
F1 - Minimum volume level (see Section 3.3.3)
F2 - Key beep on-off (see Section 3.5.4)
F3 - Backlight on-off (s ee Section 3.5.2
F4 - Squelch adjust (see desc ription whic h follows)
3. To return the F1-F4 keys to the programmed functions, turn transceiver power off and on again without pressed.
3.3.5 CHANNEL SELECTION
Channel Scrolling - If the keys are pro-
grammed as or keys, they can be
CH UP CH DN
pressed to scroll up or down through the programmed
channels.
Direct Selection - The F1-F4 and keys can
be programmed to directly select a specific channel.
These keys are then labeled to .
CH 1 CH 4
The volume can be adjusted in up to 32 steps by
pressing the volume up/down keys ( ). A
graph in the alpha numeric di splay indi cates t he current
volume level. If eq uipped wit h a option switch,
MONI
you may be able to press (or press and hold) that
switch to enable audio for use as a reference level.
The minimum selectable volume level can be set
by the power-on menu descri bed in Section 3.3.4.
Select this mode and then press F1 to display
“AFMIN”. Then press the volume up/down keys to
select the desired minimum level. The current level is
indicated by the bar graph, or receiver noise can be
enabled as described in Section 3.3.6.
3.3.4 POWER-ON MENU
The power-on menu is a special menu that can be
selected at power on to control various functions.
Proceed as follows:
1. Select the power-on menu by turning power on wit h
the up and down keys pressed.
2. The F1-F4 keys now control the following func-
tions. Press the switch once to select the function
3.3.6 ADJUSTING SQUELCH LEVEL
The squelch level is adjusted by programming or
selecting the power-on menu just described. Proceed
as follows to use the power-on menu:
1. Select a non-busy channel. Then select the power-
on menu by turning power on with t he up an d down
keys pressed.
2. Press the F4 option key to select the squelch adjust
mode indicated by “SQ xx”.
3. Press the down key until noise is heard from
the speaker (adjust the volume if necessary). Then
press the up key until the noise just mutes (the
“SQ xx” number indicates the relative squelch
level).
4. Reselect normal operation by turning p ower off a nd
on without the up and down keys pressed.
NOTE: If weak messages are not heard or unsquelching occurs when no messages are present, slight readjustment up or down may be required.
3-3
November 1998
Part No. 001-7600-001
OPERATION
3.3.7 BANK SELECT
Two banks of up to 16 channels each can be programmed. Only the channels in the current bank are
then selectable. This would allow, for example, groups
of channels to be programmed for operation in different cities.
The key is pressed to switch between
BANK
banks, and the current bank is indicated br iefly in the
display as “BANK 1” or “BANK 2”. If bank select is
not used, a single block of up to 32 channels can be
programmed.
3.3.8 AUTOMATIC SCAN ENABLE
The transceiver can be programmed so that scanning is automatically enabled whenever power is
turned on or the microphone is placed on-hook. Refe r
to the scan description in Section 3.6 for more
information.
3.3.9 BACKLIGHT ON-OFF
The following backlight modes can be selected
by the option switch or by pressing F3 in the
LITE
power-on menu described in Section 3.3.4.
a microphone with a telephone keypad, or up to seven
telephone numbers also may be preprogrammed and
then selected by pressing the key (see descrip-
DTMF
tion in Section 3.5.7).
3.4.2 RECEIVING A CALL
1. Turn transcei ver power on and set the volume level
as described starting in Section 3.3.1.
2. Select or scan the channe l or channels on which you
want to receive the call. Refer to Section 3.6 for
more information on scanning.
3. When the message is received , take the micropho ne
off-hook and respond. Press the microphone pushto-talk (PTT) switch to talk and release it to listen.
4. When the conversation is finished, place the microphone back on-hook. The microphone hanger may
control features such as scanning and monitoring
that are described later.
3.4.3 PLACING A CALL
1. Turn transcei ver power on and set the volume level
as described starting with Section 3.3.1.
LI ON - On continuously
LI OF - Always off
LI AT - Controlled by the voltage applied to pin 1
of the DB9 connector on the optional accessory
cable (see “Light” in Table 4-2).
3.3.10 BEEP ON-OFF
The key beep which sounds when keys are
pressed can be enabled and disabled by pressing the
option switch or pressing F2 in the power-on
BEEP
menu described in Section 3.3.4. Either “BP ON” or
“BP OF” is displayed to indicate the current mode.
3.4 RECEIVING AND PLACING CALLS
3.4.1 INTRODUCTION
The two calls which can be placed and received
are mobile-to-mobile and telephone calls. With telephone calls, the tele phone number can be dialed using
2. Select the channel on which the call will be made as
described in Section 3.4.
3. Regulations require that the channel be monitored
before transmitting to make sure that it is not being
used by anyone else. If you were to transmit while
someone was talking, you would probably disrupt
their conversation. Refer to “Monitoring Before
Transmitting” description which follows for more
information.
4. If the channel is not busy, press the microph one P TT
switch to talk and release it to listen.
5. When the conversation is finished, place the microphone back on-hook.
3.4.4 MONITORING BEFORE TRANSMITTING
Use one of the following methods to monitor the
channel before transmitting a message:
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3-4
OPERATION
•
Note if the busy indicator ( ) on the front panel
is being displayed. I f it is not, the channel i s not busy
and a message can be transmitted.
•
Taking the microphone off-hook disables coded
squelch control if it is programmed for the monitor
function. Take the microphone off-hook and the
indication should be displayed. If no messages are heard, the channel is not busy and a message
can be transmitted.
•
If the monitor ( ) option switch is pro-
MONI
grammed, pressing it disa bles coded squelch contro l
similar to taking the microphone off-hook. If no
messages are then h eard, the channel is not busy and
a message can be transmitte d. Press the switch again
to disable monitoring.
•
If the Transmit Disable On Bus y feature is pro grammed on the channel, t he trans mitte r is aut omatically disa bled if the channel is busy. This is
indicated by th e display flashing and a rapid beeping
when the PTT switch is pressed.
3.4.5 TIME-OUT TIMER
The time-out timer disables the transmitter if it is
keyed continuously for longer than the programmed
time. If the transmitter is disabled by this feature, the
transmit indicator ( ) turns off and the display
flashes and a beeping tone is produced until the PTT
switch is released.
Table 3-1 Option Key Programmable
Functions
Function Key Label
Backlight On-Off 3.3.9
Bank Select 3.3.7
Beep on-off 3.3.10
Call Guard Tone Select 3.5.7
Channel Select
DTMF Number Select 3.5.7
Emergency Switch 3.5.8
Lock enable/disable 3.5.9
Monitor Mode Select 3.4.4
Output Power Select
Priority Channel Select 3.6.3
Receive Attenuate 3.5.13
Scan Select 3.6
Scan List Programming 3.6.2
T a lk -A rou nd Sel ect 3.5.16
2-Tone, 5-Tone Calling
Wide/Narrow Ban d
Select
LITE
BANK
BEEP
TONE
CH UP CH DN
CH 1 CH 2
CH 3 CH 4
DTMF
EMER
LOCK
MONI
HIGH LOW1
LOW2
PRI A PRI B
ATT
SCAN
TAG
TA
CALL CAL A
CAL B TX CH
CODE ID MR
W/N
Description
Section No.
3.3.5
3.5.11
3.5.18
3.5.19
One use of t his feature is to prevent a channel
from being kept busy for an extended period by an
accidentally keyed tr ansmitter. It can also prevent possible damage to the transceiver caused by transmitting
for an excessively long period.
There is also a penalt y timer that may be programmed to prevent further transmissions for the programmed time after the transmitter is disabled.
3.5 PROGRAMMABLE FUNCTIONS
3.5.1 INTRODUCTION
The F1-F4 and keys on the fr ont pa nel
can be programmed for the functions shown in
Table 3-1. A sheet of labels is included with the transceiver , and the applicabl e label should be placed on the
key to indicate its function. Refer to th e section listed
in the table for a descriptio n of the function.
3.5.2 BACKLIGHT ON-OFF
Refer to Section 3.3.9.
3.5.3 BANK SELECT
Refer to Section 3.3.7.
3.5.4 BEEP ON-OFF
Refer to Section 3.3.10.
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OPERATION
HIGH
PRI A
PRI B
3.5.5 CALL GUARD TONE SELECT
If the transceiver has a key, the Call
TONE
Guard (CTCSS) tone can be selected. This allows calls
to be placed to different mobiles or groups of mobiles
and received on d ifferent groups than is normal f or the
channel. Proceed as follows:
1. Press the key and “TON--x” is displayed.
TONE
2. Press the channel up/down ( ) keys to
select the desired tone (“TON--1” to “TON--9”).
3. Press the key again to exit this mode. Calls
TONE
are then placed on the current channel and other
channels using the new code until it is changed.
4. To reselect the standard Call Guard squelch tone
programmed for the channel, select “TON--M”
using the same procedure.
3.5.6 CHANNEL SELECT
Refer to Section 3.3.5.
3.5.7 DTMF NUMBER SELECT
transmission begins, the call cannot be canceled. Programming determines the channel on which the call is
transmitted and also if it is transmitted once or repeatedly until a control code is received.
3.5.9 LOCK KEY
Press and hold the key to lock all pro-
grammable keys except and .
LOCK
CALL MONI EMER
Either “LK ON” or “LK OF” is displayed to indicate
the current condition. If a locked key is pressed, all
that happens is “LOCK” is displayed.
3.5.10 MONITOR MODE SELECT
Refer to Section 3.4.4.
3.5.11 OUTPUT POWER SELECT
The and keys can be used
LOW1 LOW2
to temporarily or permanently override the programmed power output for the channel. The programming of the “RF Power Selection” param eter in Table
4-2 determines operati on. Pressing the key once
selects the level on the key and pressing it again
selects the programmed level.
If the transceiver has a key, up to seven
DTMF
preprogrammed telephone numbers can be transmitted. Proceed as follows:
1. Press the key and the currently selected
DTMF
number is indicated as “DTMF x”.
2. Press the channel up/down keys ( ) to
select a different number.
3. To transmit the selected number on the current
channel, press and hold the key.
DTMF
NOTE: The DTMF 6 number is used for emergency
calls and the DTMF 7 number is used for automatic
logging. Therefore, if these features are used, the
number may not be available for regular calls.
3.5.8 EMERGENCY KEY
Press and hold the key to transmit an
EMER
emergency call. To cancel th is call before it is transmitted, press and hold thi s key agai n. Once emer ge ncy
3.5.12 PRIORITY CHANNEL SELECT
Pressing selects t he priority A channel
and pressing selects the priority B channel.
The key can also be programmed so that press-
PRI A
ing and holding the key makes the current channel the
priority A channel. Refer to Section 3.6.3 for more
information.
3.5.13 RECEIVE ATTENUATE
Pressing th e key turns receive signal
ATT
attenuation on and off. Either “AT ON” or “AT OF” is
displayed to indicate the current mode. The attenuator
can be turned on if nearby strong RF signals such as
commercial radio stations or pager transmitters are
causing distortion of the receive signal.
3.5.14 SCAN SELECT
Pressing th e key turns the channel scan
SCAN
feature on and off. Refer to Section 3.6 for more
information.
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3-6
OPERATION
3.5.15 SCAN LIST PROGRAMMING
Pressing the key changes the scan list sta-
TAG
tus of the cu rrent channel. Refer to the scan list
description in Section 3.6.2 for more information.
3.5.16 TALK-AROUND SELECT
The talk-around mode causes transmissions to
occur on the receive frequency to permit dir ec t
mobile-to-mobile communication when a repeater is
being used. The talk-around mode is turned on and off
by pressing the key. Either “AR ON” or “AR
TA
OF” is briefly displayed to indicate the current mode.
Changing the channel or turning power off causes talkaround to revert to the off condition.
3.5.17 2-TONE CALLING FEATURES
If the optional 2-tone signaling option is used,
pressing the key transmits the 2-tone codes on
CALL
the selected channel or on a non-busy channel if
pressed while scanning.
3.5.18 5-TONE CALLING FEATURES
If the optional 5-to ne signa li ng opti on is us ed, the
following keys may be pr ogr ammed to control various
functions.
- Transmit the 5-tone call.
CALL CAL A CAL B
Depending on your signali ng system, cal l transmi ssion
may be necessary before you call another station. The
CAL A and CAL B keys may be programmed when
selective Individual/Group calls are used.
- Selects the 5-tone code to be transmitted. To
TX CH
change the contents of the station code, push and hold
this key and then press the keys.
- Selects th e transmit code directory.
CODE
- Recalls last five codes received. Press and
MR CH
hold to erase all codes. To scroll, pr ess .
3.5.19 WIDE/NARROW BAND SELECT
Pressing the key switches the receiver
W/N
between narrowband and wideband operation. The
display briefly indicates “WIDE” or “NARROW” to
indicate the current mode. Each channel can also be
programmed for wide or narrow band operation, and
this switch toggles that setting. However, the change is
only temporary because the programmed condition is
reselected if the c h an nel is changed or power is cycled.
3.6 CHANNEL SCAN
3.6.1 INTRODUCTION
The channel scan f eature monitors t he channe ls in
the current scan list. When a message is detected that
the transceiver is programmed to receive, scanning
stops and the message is received. Shortly after the
message is complete, scanning resum es (after the
resume timer counts down). The selected channel
changes to that of the call.
If the microphone is taken off-hook or the transmitter is keyed while scanning, scanning resumes
when the auto reset timer selected for the channel
counts down. Scanning does restart if this timer is disabled or if the Scan A key is programmed with poweron scan disabled (see Tables 4-2 and 4-5).
Scanning is turned on and off by the key.
SCAN
The transceiver also may be programmed so that scanning automatically turns on whenever power is turned
on or the microphone is placed on-hook. The microphone must be on-hook for scanning to occur.
The decimal point in the di splay flashes when the
scan mode is enabled. Then when scanning is actually
occurring, either the scan list identification (see next
section) or the ra pidly c ycling chan nel ide ntif icati on is
displayed as the channels are scanned. Programming
determines which occurs (see Table 4-5).
3.6.2 SCAN LISTS
Up to five scan lists can be selected by pressing
and holding the key until the scan list identifi-
SCAN
cation appears and then pressing the keys.
Press the key again to exit this mode (this also
SCAN
occurs automaticall y in ab out 30 secon ds) a nd again to
enable scanning (if desired).
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Part No. 001-7600-001
OPERATION
PRI A
The scan lists are user programmable if the
key is available. Pressing this key changes the
TAG
status of the displayed channel in the current scan list
only. The display indicates “SC ON” if the channel
was just added to the scan list and “SC OF” if it was
just deleted. In addition, the sc an list sta tus is in dicat ed
by the decimal point in t he display. This indicator is on
when the displayed channel is scanned. The decimal
point flashes when scanning is occurring.
The scan list status of a channel can be changed
while scanning only when listening to a message on
the channel. The current status of all the lists is sto r ed
in memory. Therefore, the status of the various scan
lists does not change when power is turned off.
3.6.3 PRIORITY CHANNEL SAMPLING
Priority channel sampli ng en sur es that me ssa ges
on priority channels are not missed while listening to
messages on other channels. If priority sampling is
used, a priority A channel is designated by programming. If the key is available, pressing that key
selects the priority A channel. This key also may be
programme d so that if it is pressed and held, the priority A channel changes to the current channel.
Sampling of the priority A channel occurs only
when scanning is enabled. It does not occur while
transmitting. When the priority channel is sampled
while listening to a message on another channel, a
series of “ticks” are heard. These ticks are brief i nterruptions of the audio signal that occur while the transceiver changes channels to check the priority channel.
Another priority channe l also can be pr ogrammed
that can be quickly selected by the key. This
PRI B
channel is programmed only to allow quick selection
and is not sampled while listening to a non-priority
channel.
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3-8
SECTION 4 PROGRAMMING
Programming Cable
(Includes Le vel Convert. Circuit)
P.N. 585-7500-031
Female DB9 Plug To Computer
PROGRAMMING
Figure 4-1 Programming Setup
4.1 GENERAL
4.1.1 PROGRAMMING SETUP
The following items are required to program this
transceiver. The part numbers of the programming
cable and software ar e shown in Table 1-1. A printer is
also recommended for making a hard copy record of
the information programm ed into the transceiver. The
programming setup is shown ab ove.
•
IBM® PC AT or PS/2 compatible computer with
one available serial port
•
MS-DOS® version 5.02 or higher or equivalent
•
E.F . J ohnson programmin g cable (inclu des require d
level converter circuit) and adapter cable
•
E.F. Johnson programming software
4.1.2 PROGRAMMING CABLES
Programming Cable, Part No. 585-7500 -03 1, and
Adapter Cable, Part No. 58 5-7600- 031, are r equire d to
Adapter Cable
P.N. 585-7600-031
connect the computer to the transceiver. The programming cable has a female DB9 connector which plugs
into the serial port of the computer. In this connector is
a level converter circuit which converts the RS-232
levels of the computer to the logic levels required by
the transce i ver. The other end of th e cable plugs into
the adapter cable which adapts the miniature phone
plug to the modular-styl e microphone conne ctor on the
transceiver. Turn transceiver power on after these
cables are connected.
4.1.3 PROGRAMMING SOFTWARE
The programming software is distributed on a
3-1/2” 1.44 M diskette. Th is disket te incl udes the mai n
executable program RP7600.EXE and several ancillary files it requires to run. These files total approximately 430k in size. Also included on this disk is the
ADJUST program used to tune the transceiver. This
program and other files it requires to run total about
180k in size and are located in a separate subdirectory
4-1
November 1998
Part No. 001-7600-001
PROGRAMMING
on the disk called ADJ. The use of this program is
described in Section 5.
These are DOS programs, so Windows® 3.x, 95,
or NT are not required to run them. If the program
does not run properly in Windows, run it in the DOS
mode.
Before you use the program, the files on the diskette should be copied to your hard disk or a programming disk. Do not use the distribution disk for programming or transceiver tuning because it should be
kept as a backup in case something happens to the program on the working disk.
4.2 STARTING THE PROGRAM
Proceed as follows:
1. Start the computer in the DOS mode. If the pro gram
is not installed on a hard drive, insert th e programming disk in drive A.
•
The Space or backspace key toggle the setting.
•
Use the File menu to save the data and exit the
program.
4.4 MENU FLOW
4.4.1 INTRODUCTION
The menu bar along the top of the screen is used
to select the various menus that are used to program
this transc eiver. Press the ALT or ESC key to enable
this menu bar. Then to move horizontally to select a
menu, use the arrow (←
lighted letter in the title. Then to display the menu and
highlight the desire d item, use the arrow (↓ ↑) keys
and then press ENTER to select it. The following
describes each of the menus that can be selected.
4.4.2 FILE MENU
→
) keys or type the high-
2. Make the directory of the program the cur rent dir ectory. Then start the program by typing RP7600
(Enter).
3. The Memory Channel screen described in Section
4.4.3 is then displayed. Set or modify the data as
desired. Make sur e to scroll r ight using the → key so
the right-most screen parameters can be
programmed.
4.3 SPECIAL KEYS AND FUNCTIONS
•
Information on the various parameters is available
in the form of help screen s. To display information
on the currently highlighted function or setting,
press F1.
•
Pressing ALT or ESC selects the menu on top or
returns to the previous screen.
•
↑ ↓ keys or highlighted character keys move the
cursor.
Load - Loads data from a previously saved data file.
To display the directory, press (Enter) again.
Save - Saves the current data to the specified file. The
extension “. ICF” is automatically added to the file
name.
Delete - Dele tes the current file.
Dos - Allows you to go to the DOS mode to perform a
function in DOS such as copying a file. To return to
the previous screen, type EXIT.
Exit - Quits the program and exits to DOS.
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PROGRAMMING
4.4.3 SCREEN MENU
LMR (U.S.) Format
NOTE: The Screen menu for PMR (European) models
is slightly different than the LMR version shown
above. Refer to Section 4.5 for more information on
PMR models.
Memory Channel - Displays the screen shown in
Table 4-1 which is used to program channel parameters such as frequency, Call Guard (CT CSS/DCTS)
coding, and power output. The screen in Table 4-1 is
for LMR models; refer to Section 4.5 for information
on the PMR version.
Key and Display Assign - Displays the screen shown
in Table 4-2 which assigns functions to the
programmable keys.
Common - Displays the screen shown in Table 4-7
which programs miscellaneous information such as
various timer settings.
Expert - Displays the screen shown in Table 4-8
which programs various timers and other information.
Normally, the default value in this screen should not
be changed.
4.4.4 PROGRAM MENU
Read ← TR - Reads the data programmed in the connected transceiver.
Write → TR - Programs the connected transceiver
with the current data.
Information - Displays information on the connected
transceiver such as the model, revision, and the “Program Comment” programmed in the Common screen
(see Table 4-7).
DTMF Autodial - Displays the scr een shown in Table
4-3 which programs five DTMF code channels (prestored telephone or other numbers). Up to 24 characters can be programmed in each location.
Continuous Tone - Displays the screen shown in
Table 4-4 which programs nine user selectable Call
Guard (CTCSS) tones.
Scan List - Displays the screen shown in Table 4-5
which programs various parameters for each scan list.
2-Tone Code Channel - Displays the screen s hown in
T able 4-6 which programs transcei ver oper ation wi th a
2-tone option. The optional 2/5-Tone Decoder Kit,
Part No. 585-7500-026, is required to use the 2-tone
function. This screen is displayed with LMR models
only (see Section 4.4.6).
4.4.5 PRINT MENU
Current - Prints the currently displayed data.
All - Prints all data for the selected file.
4.4.6 MODEL MENU
LMR - Selects LM R (U.S.A.) models. Selecting this
model displays unique parameters in various screens
for programming a 2-tone option. The differences are
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November 1998
Part No. 001-7600-001
PROGRAMMING
in the Screen menu (see Section 4.4.3), Memory
Channel screen (see Table 4-1), and DTMF Autodial
screen (see Table 4-3).
Refer to Section 4.5 for mo re information on PMR
models.
4.4.7 SETUP MENU
PMR - Selects PMR (European) models. Selecting
this model displays unique parameters for program-
Display Type - Select the color or monochrome 1 or 2
display modes.
ming a 5-tone option. As with the LMR selection,
unique parameters are displayed in the Screen menu
and Memory Channel an d DTMF Autodial screens.
RS-232C - Selects the computer seri al p ort b ein g used
to connect the computer to the transceiver.
Table 4-1 Memory Channel Screen Description (LMR Models)
Parameter Description
NOTE: To display th is part of the screen, scroll over using the → arrow key
.
Bank Select
Up to 32 channels or two banks of 16 channels can be programmed. To program the channels as two banks, first
program the “MR-CH Bank/Free” parameter in the Key and Display Assign screen for “Bank” as described in Table 4-2. In
addition, a “Bank” option switch must be programmed in this screen to select banks. To switch between banks when
programming channels, press the PgUp/PgDn keys.
November 1998
Part No. 001-7600-001
4-4
Table 4-1 Memory Channel Screen Description (LMR Models) (Continued)
Parameter Description
Ch Atr
(Channel
Attribute)
Frequency
(Rx/Tx)
CTCSS/
DTCS
(Rx/Tx)
Press (Enter) to display the menu which selects one of the following choices:
A: Prio rit y A - The chan nel is selected when the Prio A key is pressed, and it is monitored during priority scan.
In addition, the microphone hanger can be programmed so that this channel is automatically selected whenever an off-hook condition occurs (see Table 4-2).
B: Priority B - The channel is quick selected when the Prio B key is p ressed. It is not monitored during priority
scan.
E: Emergency Channel - Transmission occurs on the channel when the Emergency s witch is pressed.
Emergency Off - Deletes the emergen cy designation o n curren t channel if applicable. If n o emerg ency chan nel
is designated, transmission occurs on the currently selected channel.
SmarTrunk II™ On/Off - Toggles the SmarTrunk function on and off on the bank. This function is not
available with this transceiver.
Channel Insert - Inserts a blank channel by pushing the other channel information down one line.
Channel Delete - Deletes the programming information on the current line and moves the channel information
below it up one line.
Return - Exits the menu and returns to the main screen.
Enter the desired frequency for the channel. Enter a frequency within the frequency range of the transceiver:
VHF = 136-155 or 146-174 MHz, UHF = 400-430, 450-470, 470-490, or 488-512 MHz. Channel steps in multiples of 5.0, 6.25, or 7.5 kHz only. If no receive frequency is entered, no other data can be programmed on the
line. Other special functions associated with frequency are as follows:
Rx Fre q - Press the backspace key to toggle between wide and narrowband. Nar rowban d is in dicated b y “n” to
the right of the frequency. Press the spacebar to toggle receive inhibit on and off indicated by “i” to the left
of the frequency. This limits the channel to priority or emergency use only (it is not available as a regular
channel).
Tx Freq - To enter the same frequency as the receive frequency, enter nothing or “=”. The “←” symbol means
same as receive frequency. Enter a space to disable transmitting on the channel (“Inhibit” is then displayed).
F8 and F9 can be used to cut and paste frequencies. Press (Enter) when the desired frequency has been
entered.
Enters the receive and transmit tone (CTCSS) Call Guard® frequency or digital (DTCS) Call Guar d code. Press
(Enter) to display the tone selection table. Select a tone by scrolling to it and pressing (Enter). Press the spacebar or backspace key to increase or decrease the entered frequency. The “←” symbol means same as receive
code.
PROGRAMMING
The length of the CTCSS reverse burst can be set by the “CTCSS Reverse Burst” parameter on the Common
Screen (see Table 4-7). A non-standard CTCSS tone from 60.1 to 300.1 Hz can be specified on the Expert
screen and then selected by “USER”. If a CTCSS tone is selected by the TONE option switch, it overrides the
channel programming until “TON--M” is reselected.
Digital codes must
sure to enter the tone decimal point or the number is interpreted as a digital code. To toggle the polarity of digital codes, press the spacebar or backspace key. The N or I indicates Normal or Inverted polarity. In
addition, the polarity of digital Call Guard signaling for all channels is set on the Expert screen.
Text P rograms the 7-character alpha tag that is displayed when a channel is selected. If no text is programmed, the
channel number is displayed as CH-xx. Allowable characters are A-Z (upper or lower case), 0-9, ’ * , + $ ’ ( ) –
/ < = > ? @ [ \ ] _ { | } ~. However, some characters, especially lower case letters, may be difficu lt to see. The tx
up arrow is displayed by “:” , and the rx down arrow by “;”. Special characters may be programmed in the
Expert screen (see Table 4-8) and used for the positions 3-7 only (positions 1 and 2 can display only regular
characters). To enter a special character, press PgUp/PgDn to scroll through and select characters A-P.
TOT
(Time-Out
Timer)
Smartrunk II™ is a trademark of Smartrunk Systems Inc.
Disables the transmitter on that channel if it is keyed continuously for longer than the programmed ti me. The
times for this timer and other related functions are programmed in the Common Screen (see Table 4-7).
always be entered directly (there is no table) and tone frequencies can be entered dir ectly. Be
November 1998
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Part No. 001-7600-001
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