Motorola EP450 - page 27

December 3, 2003 HKLN4215A

4-4 Performance Checks: RF Test Mode

Table 4-4. Test Frequencies

Channel Selector

Switch Position Tes t Ch ann el VHF R2

(MHz) UHF R1

(MHz) UHF R2

(MHz) UHF R3

(MHz)

1 Low Power

8 High Power TX#1 or #8

RX#1 or #8 146.625 403.625 438.625 465.625

2 Low Power

9 High Power TX#2 or #9

RX#2 or #9 150.775 409.775 443.775 470.775

3 Low Power

10 High Power TX#3 or #10

RX#3 or #10 155.275 415.275 448.275 475.275

4 Low Power

11 Hi gh P owe r TX#4 or #11

RX#4 or #11 160.125 421.125 454.125 480.125

5 Low Power

12 High Power TX#5 or #12

RX#5 or #12 164.475 427.475 459.475 485.475

6 Low Power

13 High Power TX#6 or #13

RX#6 or #13 169.475 433.475 464.475 490.475

7 Low Power

14 High Power TX#7 or #14

RX#7 or #14 173.875 439.875 469.875 494.875

Table 4-5. Receiver Performance Checks

Test Name Communications Analyzer Radio Test Set Comments

Reference

Frequency Mode: PWR MON

4th channel test frequency*

Monitor: Frequency error

Input at RF In/Out

*. See Table 4-4

TEST MODE,

Test Channel 4

carrier squelch

output at

antenna

PTT to continu-

ous (during the

performance

check)

Frequency error to be

±200 Hz VH F

±500 Hz UHF

Rated Audio Mode: GEN

Output level: 1.0m V RF

4th channel test frequency*

Mod: 1 kHz tone at

3 kHz deviation

Monitor: DVM: AC Volts

TEST MODE

Test Channel 4

carrier squelch

PTT to OFF

(center), meter

selector to Audio

PA

Set volume control to

3.24Vrms

Distortion As above, except to distortion As above As above Distortion <5.0 %

Sensitivity

(SINAD) As above, except SINAD,

lower the RF level for 12 dB

SINAD.

As above PTT to OFF

(center) RF input to be <0.30

µV (0.25 µV typical).

Noise

Squelch

Threshold

(only radios

with conven-

tional system

need to be

tested)

RF level set to 1 mV RF As above PTT to OFF

(center), meter

selection to

Audio PA, spkr/

load to speaker

Set volume control to

3.24 Vrms

As above, except change fre-

quency to a conventional sys-

tem. Raise RF level from zero

until radio unsquelches.

out of TEST

MODE; select

a conventional

system

As above Unsquelch to occur at

<0.25 µV.

Preferred SINAD =

6-9 dB

Contents

Main Page Foreword Product Safety and RF Exposure Compliance Computer Software Copyrights Document Copyrights ! Table of Contents Chapter 6 Display Model Disassembly and Re-assembly ................ 6-1 Chapter 7 Non-Display Model Disassembly and Re-assembly ........ 7-1 Chapter 8 Troubleshooting Tables ..................................................... 8-1 List of Figures Page List of Tables Related Publications Chapter 1 Model Charts and Test Specifications 1.1 Radio Model Information 1.2 Model Chart for VHF 146-174 MHz EP450, VHF, 146-174 MHz 1.3 VHF Test Specifications General Transmitter Receiver 1.4 Model Chart for UHF 403-440 MHz EP450, UHF, 403-440 MHz 1.5 Model Chart for UHF 438-470 MHz EP450, UHF, 438-470 MHz 1.6 Model Chart for UHF 465-495 MHz EP450, UHF, 465-495 MHz 1.7 UHF Test Specifications General Transmitter Receiver December 3, 2003 HKLN4215A 1-8 Model Charts and Test Specifications: MIL Standards 1.8 MIL Standards Chapter 2 Theory Of Operation 2.1 Introduction 2.2 Major Assemblies 2.2.1 Receiver 2.2.2 Transmitter Frac N Mod IF IC Chapter 3 Test Equipment, Service Aids, and Service Tools 3.1 Test Equipment 3.2 Service Aids Page December 3, 2003 HKLN4215A 3-4 Test Equipment, Service Aids, and Service Tools: Service Aids Programming/Test Cable Figure 3-1. Programming/Test Cable Figure 3-2. Wiring of the Connectors Chapter 4 Performance Checks 4.1 General 4.2 Power-Up Self Test 4.3 RF Test Mode Page Page 4.0 kHz but 5.0 kHz Page Chapter 5 Radio Alignment Procedures 5.1 Introduction 5.2 CPS Programming Setup 5.3 Radio Tuning Setup 5.3.1 Initial Test Equipment Control Settings 5.4 Transmitter Alignment Options 5.4.1 Reference Oscillator Warp 5.4.2 Modulation Balance Attenuation 5.4.3 Transmit Power Tuning 5.4.3.1 To Perform Transmit High Power Tuning, do the following: 5.4.3.2 To Perform Transmit Low Power Tuning, do the following: - 5.4.4 VCO Attenuation 5.4.4.1 VCO Attenuation 25 kHz 5.4.4.2 VCO Attenuation 12.5 kHz 5.4.4.3 VCO Attenuation 20 kHz 5.4.5 DTMF Deviation Tuning 5.4.6 MDC-1200 Deviation Tuning 5.5 Receiver Tuning 5.5.1 Rated Volume Tuning 5.5.2 Squelch Tuning 5.5.2.1 Manual Squelch Tuning 5.5.2.2 Auto Tune 5.5.3 RSSI System Level Tuning 5.5.4 RSSI Display Tuning 5.6 Utilities 5.6.1 Program Serial No. 5.7 Radio-to-Radio Cloning Page Page Chapter 6 Display Model Disassembly and Re-assembly 6.1 Introduction 6.2 Preventive Maintenance 6.2.1 Inspection 6.2.2 Cleaning Procedures 6.3 Safe Handling of CMOS and LDMOS Devices 6.4 Disassembling and Re-assembling the Radio General 6.4.1 Radio Disassembly Detailed 6.4.1.1 Front Cover From Chassis Disassembly Page Page 6.4.1.2 Dust Cover Disassembly 6.4.1.3 Speaker and Microphone Disassembly 6.4.1.4 Keyboard Removal 6.4.1.5 PTT Disassembly 6.4.1.6 Chassis Disassembly 6.4.2 Radio Re-assembly - Detailed 6.4.2.1 Dust Cover Re-assembly 6.4.2.2 Microphone and Speaker Re-assembly Page 6.4.2.3 Keypad and LCD/Keyboard Re-assembly 6.4.2.4 Keyboard Retainer Re-assembly 6.4.2.5 Chassis Assembly/Re-assembly 6.4.2.6 Chassis and Front Cover Re-assembly Page 6.4.2.7 PTT Re-assembly 6.5 Mechanical View and Parts List 6.5.1 EP450 Display Exploded View and Parts List Figure 6-22. EP450 Display Radio Exploded View 1 Page Chapter 7 Non-Display Model Disassembly and Re-assembly 7.1 Introduction 7.2 Preventive Maintenance 7.2.1 Inspection 7.2.2 Cleaning Procedures 7.3 Safe Handling of CMOS and LDMOS Devices 7.4 Disassembling and Re-assembling the Radio General 7.4.1 Radio Disassembly Detailed 7.4.1.1 Front Cover From Chassis Disassembly Page 7.4.1.2 Dust Cover Disassembly 7.4.1.3 Speaker and Microphone Disassembly 7.4.1.4 PTT Disassembly 7.4.2 Chassis Disassembly 7.4.3 Radio Re-assembly - Detailed 7.4.3.1 Dust Cover Re-assembly 7.4.3.2 Microphone and Speaker Re-assembly 7.4.3.3 Chassis Assembly/Re-assembly 7.4.3.4 Chassis and Front Cover Re-assembly c. 7.4.3.5 PTT Re-assembly Page 7.5 Mechanical View and Parts List 7.5.1 EP450 Non-Display Exploded View and Parts List Figure 7-16. EP450 Non-Display Radio Exploded View Page Chapter 8 Troubleshooting Tables 8.1 Power-Up Error Codes 8.2 Operational Error Codes 8.3 Troubleshooting Table for Receiver 8.4 Troubleshooting Table for Transmitter Page Appendix A Accessories Antennas Carrying Accessories Chargers Batteries Audio Accessories Headsets Remote Speaker Microphones Manuals Page Appendix B Warranty, Service Support, and Replacement Parts 1.1 Scope of Manual 1.2 Warranty 1.2.1 Warranty Period and Return Instructions 1.2.2 After Warranty Period 1.3.2 Motorola Online 1.3.3 Mail Orders 1.3.4 Telephone Orders 1.3.5 Fax Orders 1.3.6 Parts Identification 1.4 Technical Support Page Glossary of Terms