Motorola Solutions 89FT4828 Hand-held Portable Device. User Manual 89C80 O p i iv TOC

Motorola Solutions, Inc. Hand-held Portable Device. 89C80 O p i iv TOC

Instruction Manual

Table of Contents

Foreword

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .inside front cover

List Of Figures

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

List of Tables

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Related Publications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Portable Radio Model Numbering System

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Specifications for VHF Radios

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Specifications for UHF Radios

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Specifications for 800 MHz Radios

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

Glossary

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

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

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Notations Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Radio Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

FLASHport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 - Basic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 - Recommended Test Equipment and Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Service Aids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Field Programming Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 - Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 - Radio Alignment Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Reference Oscillator Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Transmit Power Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Transmit Deviation Balance (Compensation) Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Transmit Deviation Limit Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

, Motorola, ASTRO, XTS 3500, Private-Line, and Digital Private-Line are trademarks of Motorola, Inc.

® by Motorola Inc., Radio Products Group

8000 W. Sunrise Blvd., Ft. Lauderdale, FL 33322

Printed in U.S.A. 9/98

Basic Service Manual

68P81089C80-O

6 - Basic Removal/Installation Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Introduction to This Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Belt Clip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Universal Connector Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Frequency Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Volume Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7 - Basic Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

General Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Analog Mode of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

ASTRO Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

RF Board Basic Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

VOCON Board Basic Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8 - Radio-Level Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Introduction to This Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Power-Up Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Operational Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Replacement Parts Ordering

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside back cover

List Of Figures

Figure 1. Radio Alignment Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Figure 2. RSS Service Menu Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 3. Softpot Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 4. Reference Oscillator Alignment Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 5. Transmit Power Alignment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 6. Transmit Deviation Balance (Compensation) Alignment Screen . . . . . . . . . . . . . . . . . 17

Figure 7. Transmit Deviation Limit Alignment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 8. Partial Exploded View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

List of Tables

Table 1. ASTRO XTS 3500 Basic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Table 2. Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 3. Service Aids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4. Initial Equipment Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Table 5. Test Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 6. Test Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 7. Receiver Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 8. Transmitter Performance Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 9. Reference Oscillator Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 10. Transmit Power Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 11. Transmit Deviation Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 12. Partial Exploded View Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Table 13. Local Oscillator and First IF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 14. Power-Up Error Code Displays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 15. Operational Error Code Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 16. Receiver Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 17. Transmitter Troubleshooting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 18. Encryption Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Related Publications

ASTRO Digital XTS 3500 Model I User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C77

ASTRO Digital XTS 3500 Model II User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C78

ASTRO Digital XTS 3500 Model III User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C79

ASTRO Digital XTS 3500 Detailed Service Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C81

iii

Computer Software Copyrights

The Motorola products described in this manual may include copyrighted Motorola computer programs

stored in semiconductor memories or other media. Laws in the United States and other countries preserve

for Motorola certain exclusive rights for copyrighted computer programs, including, but not limited to,

the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any

copyrighted Motorola computer programs contained in the Motorola products described in this manual

may not be copied, reproduced, modiﬁed, reverse-engineered, or distributed in any manner without the

express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be

deemed to grant either directly or by implication, estoppel, or otherwise, any license under the

copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use

that arises by operation of law in the sale of a product.

SPECIFICATIONS FOR VHF RADIOS

All speciﬁcations are per Electronic Industries Association (EIA) 316B unless otherwise noted

GENERAL RECEIVER TRANSMITTER

FCC Designation:

AZ489FT3790

Temperature Range:

Operating:

–30

C to +60

Storage:

–40

C to +85

Power Supply:

Nickel-Cadmium Battery (NiCd)

Nickel-Metal-Hydride Battery (NiMH)

Lithium-Ion Battery (Li-Ion)

Battery Voltage:

Nominal:

7.5 Volts

Range:

6 to 9 Volts

Transmit Current Drain (Typical):

2300mA

Receive Current Drain (Rated Audio):

290mA

Standby Current Drain:

90mA

Recommended Battery:

Ultra-HIgh-Capacity NiCd:

NTN8294A

Ultra–High-Capacity NiCd FM:

NTN8295*

Ultra–High-Capacity

NiMH FM:

NTN8299A*

Optional FM (Factory Mutual) Battery:

* FM Intrinsically Safe: Class I, II, III, Division 1,

Groups C, D,E, F, and G. FM Non-incendive:

Class 1, Division 2, Groups A, B, C, and D.

Dimensions (H x W x D)

Note: 2.44" = width at PTT; 2.34" = width at

bottom; 1.83" = depth at speaker; 0.97" = depth

at keypad

Less Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x 0.97"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 24.56mm)

With Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

Weight: (w/Helical Antenna)

Less Battery:

14.10oz. (383gm)

With Ultra-High Cap. NiCd:

25.19oz. (693gm)

With Ultra-High Cap. NiMH:

23.45oz. (644gm)

Frequency Range:

136-178MHz

Bandwidth:

42MHz

Quieting Sensitivity (20dBQ):

0.35

V (typical)

Usable Sensitivity

(12dB SINAD):

0.25

V (typical)

Intermodulation:

–78dB (typical)

Selectivity (typical)

(25/30kHz Channel):

–78dB

Spurious Rejection:

–70dB

Frequency Stability

(–30+60

C; 25

C reference):

.0002%

Rated Audio:

500mW

Distortion (At Rated Audio):

2% Typical

Channel Spacing:

12.5/20/25/30kHz

RF Power:

136-174MHz:

1 Watt/5 Watts

174-178MHz:

1 Watt/4 Watts

Frequency Range:

136-178MHz

Frequency Stability (typical)

(–30 to +60

C; 25

C ref.):

.0002%

Emission (Conducted and Radiated):

–70dBc

FM Hum and Noise (typical)

(Companion Receiver):

25/30kHz –48dB

12.5kHz –42dB

Distortion:

2% Typical

Modulation Limiting:

25/30kHz chnls

5.0kHz

20kHz chnls

4.0kHz

12.5kHz chnls

2.5kHz

Emissions Designators:

20K0F1E, 16K0F3E, 11K0F3E,

8K10F1D, and 8K10F1E

Specifications subject to change without notice

vii

SPECIFICATIONS FOR UHF RADIOS

All speciﬁcations are per Electronic Industries Association (EIA) 316B unless otherwise noted

GENERAL RECEIVER TRANSMITTER

FCC Designation:

AZ489FT4828

Temperature Range:

Operating:

–30

C to +60

Storage:

–40

C to +85

Power Supply:

Nickel-Cadmium Battery (NiCd)

Nickel-Metal-Hydride Battery (NiMH)

Lithium-Ion Battery (Li-Ion)

Battery Voltage:

Nominal:

7.5 Volts

Range:

6 to 9 Volts

Transmit Current Drain (Typical):

1700mA

Receive Current Drain (Rated Audio):

290mA

Standby Current Drain:

90mA

Recommended Battery:

Ultra-HIgh-Capacity NiCd:

NTN8294A

Ultra–High-Capacity NiCd FM:

NTN8295*

Ultra–High-Capacity

NiMH FM:

NTN8299A*

Optional FM (Factory Mutual) Battery:

* FM Intrinsically Safe: Class I, II, III, Division 1,

Groups C, D,E, F, and G. FM Non-incendive:

Class 1, Division 2, Groups A, B, C, and D.

Dimensions (H x W x D)

Note: 2.44" = width at PTT; 2.34" = width at

bottom; 1.83" = depth at speaker; 0.97" = depth

at keypad

Less Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x 0.97"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 24.56mm)

With Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

Weight: (w/Helical Antenna)

Less Battery:

14.10oz. (383gm)

With Ultra-High Cap. NiCd:

25.19oz. (693gm)

With Ultra-High Cap. NiMH:

23.45oz. (644gm)

Frequency Range:

403-520MHz

Bandwidth:

70MHz

Quieting Sensitivity (20dBQ):

0.316

V (typical)

Usable Sensitivity

(12dB SINAD):

0.25

V (typical)

Intermodulation:

–78dB (typical)

Selectivity (typical)

(25/30kHz Channel):

–78dB

(12.5kHz Channel):

–68dB

Spurious Rejection:

–75dB

Frequency Stability

(–30+60

C; 25

C reference):

.0002%

Rated Audio:

500mW

Distortion (At Rated Audio):

1.5% Typical

Channel Spacing:

12.5/20/25/30kHz

RF Power:

403-470MHz:

1 Watt/5 Watts

450-520MHz:

1 Watt/5 Watts

Frequency Range:

403-520MHz

Frequency Stability (typical)

(–30 to +60

C; 25

C ref.):

.0002%

Emission (Conducted and Radiated):

–70dBc

FM Hum and Noise (typical)

(Companion Receiver):

25/30kHz –48dB

12.5kHz –42dB

Distortion:

1.5% Typical

Modulation Limiting:

25/30kHz chnls

5.0kHz

20kHz chnls

4.0kHz

12.5kHz chnls

2.5kHz

Emissions Designators:

20K0F1E, 16K0F3E, 11K0F3E,

8K10F1D, and 8K10F1E

Specifications subject to change without notice

viii

SPECIFICATIONS FOR 800 MHz RADIOS

All speciﬁcations are per Electronic Industries Association (EIA) 316B unless otherwise noted.

GENERAL RECEIVER TRANSMITTER

FCC Designation: AZ489FT5774

Temperature Range:

Operating: –30°C to +60°C

Storage: –40°C to +85°C

Power Supply: Nickel-Cadmium Battery (NiCd)

or Nickel-Metal-Hydride Battery (NiMH)

or Lithium-Ion Battery (Li-Ion)

Battery Voltage:

Nominal: 7.5 Volts

Range: 6 to 9 Volts

Transmit Current Drain (Typical): 1700mA

Receive Current Drain (Rated Audio): 280mA

Standby Current Drain: 90mA

Recommended Battery:

Ultra-HIgh Capacity NiMH: H335AC

or Ultra–High Capacity NiCd FM: H223AX*

or NiMH FM IS: Q393AB

Optional FM (Factory Mutual) Battery:

* FM Intrinsically Safe: Class I, II, III, Division 1,

Groups D, F, and G

Dimensions (H x W x D)

Note: 2.44" = width at PTT; 2.34" = width at

bottom; 1.83" = depth at speaker; 0.97" = depth

at keypad

Less Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x 0.97"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 24.56mm)

With Ultra-High Capacity NiMH Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

With Ultra-High Capacity NiCd Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

With NiMH FM IS Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

Weight: (w/Helical Antenna)

Less Battery: 14.10oz. (383gm)

With Ultra-High Cap. NiMH:23.45oz. (644gm)

With Ultra-High Cap. NiCd: 25.19oz. (693gm)

With NiMH FM IS: 23.45oz. (644gm)

Frequency Range: 851–870MHz

Bandwidth: 19MHz

Quieting Sensitivity (20dBQ): 0.5mV Max.

Usable Sensitivity

(12dB SINAD): 0.35mV Max.

Intermodulation: –70dB

Selectivity

(25kHz Adjacent Channel): –70dB

Spurious Rejection: –70dB

Frequency Stability

(–30+60°C; 25°C reference): ±.00015%

Rated Audio: 500mW

Distortion (At Rated Audio): 3% Typical

Channel Spacing: 25kHz

RF Power: 3 Watts

Frequency Range: 806–825MHz

851–870MHz

Frequency Stability

(–30 to +60°C; 25°C ref.): ± .00015%

Emission (Conducted and Radiated): –46dBw

FM Hum and Noise

(Companion Receiver): –40dB

Distortion: 3% Typical

Modulation Limiting: ±5kHz

(821-824MHz): ±4kHz

Emissions Designators:

20K0F1E, 16K0F3E, 15K0F2D,

15K0F1D, and 8K10F1E

Specifications subject to change without notice

Introduction

General

This manual covers information needed for level one troubleshooting. Level

one troubleshooting consists of radio programming, radio alignment, knobs

replacement, and installation and removal of antenna, belt clip, battery, and

universal connector cover. This will be the only level of service allowed for the

service centers, self-maintained customers, and distributors for the ﬁrst six

months of the life of this product.

Included in this manual are radio speciﬁcations for the VHF, UHF, and

800MHz frequency bands, a general description of XTS 3500 models,

recommended test equipment, service aids, radio alignment procedures,

general maintenance recommendations, and procedures for basic assembly

and disassembly.

Notations Used

in This Manual

Throughout the text in this publication, you will notice the use of warnings,

cautions, and notes. These notations are used to emphasize that safety hazards

exist, and care must be taken and observed.

NOTE:

An operational procedure, practice, or

condition, etc., which is essential to

emphasize.

CAUTION indicates a potentially hazardous

situation which, if not avoided, may result in

equipment damage.

C a u t i o n

WARNING indicates a potentially hazardous

situation which, if not avoided, could result

in death or injury.

W A R N I N G

DANGER indicates an imminently

hazardous situation which, if not

avoided, will result in death or injury.

D A N G E R

Radio

Description

The ASTRO Digital XTS 3500 radios are among the most sophisticated two-

way radios available. The radio is presently available in the UHF R2 band;

radios in the UHF R1, VHF, and 800MHz bands will be available by the end of

1999.

One of the newest in a long line of quality Motorola products, the ASTRO

Digital XTS 3500 radio provides improved voice quality across more coverage

area. The digital process called “embedded signalling” intermixes system

signalling information with digital voice, resulting in improved system

reliability and the capability of supporting a multitude of advanced features.

Such features add up to better, more cost-effective two-way radio

communications.

ASTRO Digital XTS 3500 radios are available in two basic models. Table 1

provides a description of their basic features.

FLASHport

The ASTRO Digital XTS 3500 radio utilizes Motorola’s revolutionary

FLASHport technology. FLASHport makes it possible to add software that

drives the radio’s capabilities both at the time of purchase and later on.

Previously, changing a radio’s features and capabilities meant signiﬁcant

modiﬁcations, or buying a new radio. But now, similar to how a computer can

be loaded with different software, the radio’s features and capabilities can be

upgraded with FLASHport software.

Table 1 ASTRO XTS 3500 Basic Features

Feature Model I Model II Model III

Display None LCD

4 lines/

12 characters per line

LCD

4 lines/

12 characters per line

Keypad None 3 x 2 button 3 x 6 button

Channel Capability 48 255 255

Dialing from Prestored List No Yes Yes

Programmable Softkeys No Yes Yes

Basic Maintenance

Introduction

to This Section

This section of the manual describes preventive maintenance and handling

precautions. Each of these topics provides information vital to the successful

operation and maintenance of your radio.

Preventive

Maintenance

The ASTRO Digital XTS 3500 radios do not require a scheduled preventive

maintenance program; however, periodic visual inspection and cleaning is

recommended.

Inspection

Check that the external surfaces of the radio are clean, and that all external

controls and switches are functional. A detailed inspection of the interior

electronic circuitry is not needed.

Cleaning

The following procedures describe the recommended cleaning agents and the

methods to be used when cleaning the external surfaces of the radio. External

surfaces include the housing assembly and battery case. These surfaces should

be cleaned whenever a periodic visual inspection reveals the presence of

smudges, grease, and/or grime.

The only recommended agent for cleaning the external radio surfaces is a 0.5%

solution of a mild dishwashing detergent, such as JOY

, in water.

Cleaning External

Plastic Surfaces

The detergent-water solution should be applied sparingly with a stiff, non-

metallic, short-bristled brush to work all loose dirt away from the radio. A soft,

absorbent, lintless cloth or tissue should be used to remove the solution and

dry the radio. Make sure that no water remains entrapped near the connectors,

cracks, or crevices.

The effects of certain chemicals and their vapors can

have harmful results on certain plastics. Aerosol

sprays, tuner cleaners, and other chemicals should

be avoided.

C a u t i o n

Handling

Precautions

Complementary metal-oxide semiconductor (CMOS) devices, and other high-

technology devices, are used in this family of radios. While the attributes of

these devices are many, their characteristics make them susceptible to damage

by electrostatic discharge (ESD) or high-voltage charges. Damage can be latent,

resulting in failures occurring weeks or months later. Therefore, special

precautions must be taken to prevent device damage during disassembly,

troubleshooting, and repair. Handling precautions are mandatory for this

radio, and are especially important in low-humidity conditions.

At this time, troubleshooting and repair of the radio will not be supported by

the ﬁeld or self-maintained customer.

DO NOT attempt to disassemble the

radio.

Recommended Test

Equipment and

Service Aids

Recommended

Test

Equipment

The list of equipment contained in Table 2 includes all of the standard test

equipment required for servicing two-way portable radios, as well as several

unique items designed speciﬁcally for servicing this family of radios. The

“Characteristics” column is included so that equivalent equipment may be

substituted; however, when no information is provided in this column, the

speciﬁc Motorola model listed is either a unique item or no substitution is

recommended.

Service Aids

Refer to Table 3, “Service Aids,” for a listing and description of the service aids

designed speciﬁcally for servicing this family of radios. These kits and/or parts

are available from the Motorola Parts Division ofﬁces listed in the

“Replacement Parts Ordering” section located on the inside back cover of this

manual. While all of these items are available from Motorola, most are

standard shop equipment items, and any equivalent item capable of the same

performance may be substituted for the item listed.

Table 2 Recommended Test Equipment

Motorola

Model Number Description Characteristics Application

R2670 or R2600 System Analyzer This monitor will substitute

for items with an asterisk (*). Frequency/deviation meter and

signal generator for wide-range

troubleshooting and alignment.

R1049A* Digital Multimeter Recommended for ac/dc voltage

and current measurements

R1150C* Code Synthesizer Injection of audio and digital

signalling codes

S1053D*

SKN6008A*

SKN6001A*

AC Voltmeter

Power Cable for Meter

Test Leads for Meter

1mV to 300V, 10-Megohm

input impedance Audio voltage measurements

R1094A Dual-Trace Oscillo-

scope 20MHz bandwidth 5mV to

5V/division Waveform measurements

S1350C*

ST1213B (VHF)*

ST1223B (UHF)*

Wattmeter

Plug-In Element

RF Dummy Load

50-ohm,

5% accuracy

10 watts, maximum

0-1000MHz, 300W

Transmitter power output

measurements

R1065 Load Resistor 10-watt Broadband For use with wattmeter

S1339A RF Millivolt Meter 100

V to 3V RF RF-level measurements

R1013A* SINAD Meter Receiver sensitivity measurements

S1347D or S1348D

(programmable) DC Power Supply 0-20Vdc, 0-5 Amps

current limited Bench supply for 7.5Vdc

Field

Programming

Equipment

This family of radios can be aligned and programmed in the ﬁeld. This requires

speciﬁc equipment and special instructions. Refer to the applicable “Radio

Service Software User's Guide” for complete ﬁeld programming information.

Table 3 Service Aids

Motorola Part

Number Description Application

RKN-4035D RIB/Radio/Test Set Cable Connects radio to RTX-4005B Test Box and RIB.

REX-4424 Battery Eliminator Interconnects radio to power supply.

RLN-4460A, or

RTX-4005B, or both

RTX-4005A and

RPX-4665A

Portable Test Set Enables connection to the universal connector.

Allows switching for radio testing.

Field Modiﬁcation Kit

RLN-1015A or

RLN-4008B

Radio Interface Box Enables communications between the radio and the

computer's serial communications adapter.

01-80357A57 Wall-Mounted Power Supply Used to supply power to the RIB (120 Vac).

01-80358A56 Wall-Mounted Power Supply Used to supply power to the RIB (220 Vac).

30-80369B71 or

30-80369B72 Computer Interface Cable Use B72 for the IBM PC AT. All other IBM models use

B71. Connects the computer's serial communications

adaptor to the RIB.

RVN-4100F Radio Service Software Software on 3-1/2 in. and 5-1/4 in. ﬂoppy disks.

58-80348B33 SMA to BNC Adaptor Adapts radio’s antenna port to BNC cabling of test

equipment.

Performance Checks

Introduction

to This Section

This section covers performance checks used to verify the radio meets

published speciﬁcations. The recommended test equipment listed in the

previous section approaches the accuracy of the manufacturing equipment,

with a few exceptions. Accuracy of the equipment must be maintained in

compliance with the manufacturer’s recommended calibration schedule.

Setup

Supply voltage can be connected from the battery eliminator. The equipment

required for alignment procedures is connected as shown in the “Radio

Alignment Test Setup” diagram (page 13, Figure 1).

Initial equipment control settings should be as indicated in the following

table, and should hold for all alignment procedures except as noted in Table 4.

Test Mode

RF Test Mode

When the ASTRO Digital XTS 3500 radio is operating in its normal

environment, the radio's microcomputer controls the RF channel selection,

transmitter key-up, and receiver muting. However, when the unit is on the

bench for testing, alignment, or repair, it is removed from its normal

environment. It cannot receive commands from its system and, therefore, the

internal microcomputer will not key the transmitter nor unmute the receiver.

This prevents the use of normal tune-up procedures. To solve this problem a

special routine, called

TEST MODE

or “air test,” has been incorporated in the

radio.

Table 4 Initial Equipment Control Settings

System Analyzer Test Set Power Supply

Monitor Mode:

Pwr Mon

Spkr Set:

Voltage:

7.5Vdc

RF Attn:

–70dB

Spkr/Load:

Speaker

DC On/Standby:

Standby

AM, CW, FM:

PTT:

OFF (center)

Volt Range:

10Vdc

O'scope Source:

Mod

O'scope Horiz:

10mSec/Div

O'scope Vert:

2.5kHz/Div

O'scope Trig:

Auto

Monitor Image:

Monitor BW:

Nar

Monitor Squelch:

Mid CW

Monitor Vol:

1/4 CW

Current:

2.5Amps

To enter the test mode:

1. Turn the radio on and adjust the volume for a comfortable listening level.

The volume level remains constant once in the test mode.

2. Within 10 seconds after the “

SSee

eell

llff

TTee

eess

sstt

” is complete, press

Side Button 3

ﬁve times in succession.

3. After “

RRFF

TTEE

EESS

SSTT

” appears, press the

Top Programmable Button

(normally

programmed as the emergency button) once. “

CCSS

SSQQ

” appears, indicating:

test frequency 1, carrier squelch mode.

4. Each additional press of

Side Button 3

will advance to the next test

channel. (Refer to Table 5.)

5. Pressing

Side Button 2

will scroll through and access test environments as

shown in Table 6.

NOTE:

Transmit into a load when keying a radio

under test.

* All deviation values are based on deviation tuning of this mode.

Table 5 Test Frequencies

Test Channel UHF Band 2

TX #1 450.025

RX #1 450.075

TX #2 465.225

RX #2 465.275

TX #3 475.125

RX #3 475.275

TX #4 484.975

RX #4 485.025

TX #5 500.275

RX #5 500.225

TX #6 511.975

RX #6 511.925

TX #7 519.975

RX #7 519.925

Table 6 Test Environments

Display Description Function

CSQ Carrier Squelch

RX:

unsquelch if carrier detected

TX:

mic audio

TPL Tone Private-

Line

RX:

unsquelch if carrier and tone (192.8 Hz) detected

TX:

mic audio + tone (192.8 Hz)

AST ASTRO

RX:

none

TX:

1200Hz tone *

Control Top

and Keypad

Test Mode

To check the display, buttons, and switches, perform the following tests:

1. Turn the radio on and adjust the volume for a comfortable listening level.

The volume level remains constant once in the test mode.

2. Within 10 seconds after the “

SSee

eell

llff

TTee

eess

sstt

” is complete, press

Side Button 3

ﬁve times in succession.

3. After “

RRFF

TTEE

EESS

SSTT

” appears on the display, press Side Button 1 once, “CC

CCHH

TTEE

EESS

SSTT

TT” appears on the display.

4. Next, press and hold the Top Programmable Button; all segments on the

display will light, and the LED on the control top will illuminate a red

color.

5. Release the Top Programmable Button; “33

33//

//00

00” appears, which indicates

that the Top Programmable Button is in the open condition.

6. Press the Top Programmable Button again; “33

33//

//11

11” appears, which

indicates that the Top Programmable Button is in the closed condition.

7. Rotate the Mode/Zone Selector Switch; “44

44//

//00

00” through “44

44//

//11

1155

55” appears,

which indicates that the selector switch is in mode/zone position 1

through 15.

8. Rotate the Two-Position (A/B) Switch; “66

6655

55//

//00

00” and “66

6655

55//

//11

11” appear.

9. Cycle through the Three-Position Programmable Switch; “66

6677

77//

//00

00,”

“66

6677

77//

//11

11,” and “66

6677

77//

//22

22” appear.

10.Rotate the Volume Control; “22

22//

//00

00” through “22

22//

//22

2255

5555

55” appear.

11.Press Side Button 1; “99

9966

66//

//11

11” appears; release, “99

9966

66//

//00

00” appears.

12.Press Side Button 2; “99

9977

77//

//11

11”appears; release, “99

9977

77//

//00

00” appears.

13.Press Side Button 3; “99

9988

88//

//11

11”appears; release, “99

9988

88//

//00

00” appears.

14.Press the PTT Switch; “11

11//

//11

11” appears; release, “11

11//

//00

00” appears.

15.Keypad Checks:

-Press 0, “44

4488

88//

//11

11” appears; release, “44

4488

88//

//00

00” appears.

-Press 1, “44

4499

99//

//11

11” appears; release, “44

4499

99//

//00

00” appears.

-Press 2, “55

5500

00//

//11

11” appears; release, “55

5500

00//

//00

00” appears.

-Press 3, “55

5511

11//

//11

11” appears; release, “55

5511

11//

//00

00” appears.

-Press 4, “55

5522

22//

//11

11” appears; release, “55

5522

22//

//00

00” appears.

-Press 5, “55

5533

33//

//11

11” appears; release, “55

5533

33//

//00

00” appears.

-Press 6, “55

5544

44//

//11

11” appears; release, “55

5544

44//

//00

00” appears.

-Press 7, “55

5555

55//

//11

11” appears; release, “55

5555

55//

//00

00” appears.

-Press 8, “55

5566

66//

//11

11” appears; release, “55

5566

66//

//00

00” appears.

-Press 9, “55

5577

77//

//11

11” appears; release, “55

5577

77//

//00

00” appears.

-Press *, “55

5588

88//

//11

11” appears; release, “55

5588

88//

//00

00” appears.

-Press #, “55

5599

99//

//11

11” appears; release, “55

5599

99//

//00

00” appears.

-Press <, “11

1122

2288

88//

//11

11” appears; release, “11

1122

2288

88//

//00

00” appears.

-Press O, “11

1122

2299

99//

//11

11” appears; release, “11

1122

2299

99//

//00

00” appears.

-Press >, “11

1133

3300

00//

//11

11” appears; release, “11

1133

3300

00//

//00

00” appears.

-Press the left-hand M key on the top row of keys, “11

1133

3311

11//

//11

11” appears;

release, “11

1133

3311

11//

//00

00” appears.

-Press the center N key, “11

1133

3322

22//

//11

11” appears; release, “11

1133

3322

22//

//00

00” appears.

-Press the right-hand M key, “11

1133

3333

33//

//11

11” appears; release,

“11

1133

3333

33//

//00

00” appears.

Table 7 Receiver Performance Checks

Test Name System Analyzer Radio Test Set Comments

Reference

Frequency Mode: PWR MON 4th

channel test frequency❖

Monitor: Frequency error.

Input at RF In/Out

TEST MODE,

4 CSQ output

at antenna

PTT to continuous

(during the

performance check)

Frequency error to

be £ ±1.2kHz

Rated Audio Mode: GEN

Output level: 1.0mV RF 4th

channel test frequency❖

Mod: 1kHz tone at 3kHz

deviation

Monitor: DVM: ac Volts

TEST MODE,

4 CSQ PTT to OFF (center);

meter selector to Audio

Set volume control

to 3.74Vrms

Distortion As above, except to

distortion As above As above Distortion < 3.0%

Sensitivity

(SINAD) As above, except SINAD;

lower the RF level for 12dB

SINAD

As above PTT to OFF (center) RF input to be <

0.35mV

Noise Squelch

Threshold (only

radios with

conventional

system need to

be tested)

RF level set to 1mV RF As above PTT to OFF (center);

meter selection to

Audio PA; spkr/load to

speaker

Set volume control

to 3.74Vrms

As above, except change

frequency to a

conventional system. Raise

RF level from zero until

radio unsquelches.

Out of TEST

MODE; select

a conventional

system

As above Unsquelch to

occur at < 0.25mV.

Preferred SINAD =

8-10dB

❖ See Table 6

Table 8 Transmitter Performance Checks

Test Name System Analyzer Radio Test Set Comments

Reference

Frequency Mode: PWR MON 4th

channel test frequency❖

Monitor: Frequency

error. Input at RF In/Out

TEST MODE,

4 CSQ PTT to continuous

(during the

performance check).

Frequency error to be £

±1.2kHz.

Power RF As above As above,

4 CSQ As above Refer to Maintenance

Speciﬁcations page in

front of manual.

Voice

Modulation Mode: PWR MON 4th

channel test frequency❖

atten to –70, input to RF

In/Out.

Monitor: DVM, ac Volts.

Set 1kHz Mod Out level

for 0.025Vrms at test set,

80mVrms at ac/dc test

set jack

As above,

4 CSQ As above, meter

selector to mic Deviation: UHF: ³ 3.6kHz

but £ 5.0kHz

Voice

Modulation

(internal)

Mode: PWR MON 4th

channel test frequency❖

atten to –70, input to RF

In/Out

TEST MODE,

4 CSQ, output

at antenna

Remove modulation

input Press PTT switch on radio.

Say “four” loudly into the

radio mic. Measure

deviation: UHF: ³

3.8kHz but £ 5.0kHz

PL Modu-

lation (radios

with conven-

tional, clear

mode, coded

squelch oper-

ation only)

Change frequency to a

conventional transmit

frequency; BW to narrow

Conventional

coded

squelch

personality

(clear mode

operation) 4

TPL

As above Deviation: UHF: ³ 500Hz

but £ 1000Hz

Talkaround

Modulation

(radios with

conventional,

clear mode,

talk-around

operation

only)

Change frequency to

conventional talk-

around frequency.

Mode: PWR MON

deviation, attenuation to

–70, input to RF In/Out.

Monitor: DVM, ac volts

Set 1kHz Mod Out level

for 25mVrms at test set.

Conventional

talkaround

personality

(clear mode

operation)

1 CSQ

As above Deviation: UHF: ³ 3.8kHz

but £ 5.0kHz

Talkaround

Modulation

(radios with

conventional,

secure mode,

talkaround

operation

only) (**)

Change frequency to

conventional talk-

around frequency.

Mode: PWR MON

deviation, attenuation to

–70, input to RF In/Out.

Monitor: DVM, ac volts

Mod: 1kHz out level

for25mVrms at test set.

Conventional

talkaround

personality

(secure mode

operation).

Load key into

radio 1 sec.

As above Deviation: UHF: ³ 3.6kHz

but £ 4.4kHz

** The secure mode, talkaround modulation test is only required for trac mode radios which do not have clear mode

talkaround capability.

❖See Table 6

Radio Alignment

Procedures 5

Introduction

to This Section This section describes both receiver and transmitter radio alignment

procedures.

General A personal computer (PC) and radio service software (RSS) are required to align

the radio. Refer to the applicable RSS manual for installation and setup

procedures for the software. To perform the alignment procedures, the radio

must be connected to the PC, radio interface box (RIB), and a universal test set

as shown in Figure 1.

Figure 1 Radio Alignment Test Setup

All service and tuning procedures are performed from the SERVICE menu,

which is selected by pressing B from the MAIN MENU. Figure 2 illustrates

how the RSS alignment SERVICE screens are organized.

BNC

RIB

RLN-4008B

RIB POWER SUPPLY

01-80357A57 (120V)

COMPUTER INTERFACE

CABLE

30-80369B71

30-80369B72 (IBM "AT" ONLY)

DATA

BUSY

GND

COMPUTER

AUDIO GENERATOR

SINAD METER

AC VOLTMETER

30 dB PAD

RF GENERATOR

SYSTEM ANALYZER

OR COUNTER

WATTMETER

BATTERY

ELIMINATOR

RTL-4224A

TRANSMIT

RECEIVE

TEST SET

RTX-4005B

RADIO

PROGRAM/TEST CABLE

RKN-4046A

AUDIO IN

SET TO APPROX. 450mV FOR Tx

MEASURE 80mV FOR Tx

SMA-BNC

58-80348B33

REX-4424

RKN-4035D

RIB

RLN-4008B

RLN-1015A or

TEST SET

RLN-4460A or

RTX-4005B

Figure 2 RSS Service Menu Layout

All SERVICE screens read and program the radio codeplug directly; you do

NOT have to use the RSS GET/SAVE functions to use the SERVICE menus.

The SERVICE screens introduce the concept of the “softpot,” an analog

SOFTware-controlled POTentiometer used for adjusting all transceiver

alignment controls.

Each SERVICE screen provides the capability to increase or decrease the

‘softpot’ value with the keyboard UP/DOWN arrow keys respectively. A

graphical scale is displayed indicating the minimum, maximum, and

proposed value of the softpot, as shown in Figure 3.

Figure 3 Softpot Concept

REFERENCE OSCILLATOR ALIGNMENT

TRANSMIT POWER ALIGNMENT

TRANSMITTER ALIGNMENT MENU

TRANSMIT DEVIATION BALANCE

(COMPENSATION) ALIGNMENT

TRANSMIT DEVIATION LIMIT ALIGNMENT

F2 -

F3 -

F4 -

F5 -

RECEIVER ALIGNMENT MENU

F3 -

FRONT END BANDPASS FILTER ALIGNMENTF2 -

SERVICE

HELPF1 -

EXIT, RETURN TO SERVICE MENUF10 -

Do NOT switch radios in the middle of any SERVICE

procedure. Always use the EXIT key to return to the

MAIN menu screen before disconnecting the radio.

Improper exits from the SERVICE screens may leave

the radio in an improperly conﬁgured state and

result in seriously degraded radio or system

performance.

C a u t i o n

Min.

Value Max.

Value

015

Adjusting the softpot value sends information to the radio to increase

(or decrease) a dc voltage in the corresponding circuit. For example,

pressing the UP arrow key at the Reference Oscillator screen instructs

the radio’s microcomputer to increase the voltage across a varactor in

the reference oscillator, which increases the frequency.

In ALL cases, the softpot value is just a relative number corresponding

to a digital-to-analog (D/A) generated voltage in the radio.

Perform the following procedures in the sequence indicated.

NOTE: Some of the following screens may

vary depending upon the radio under

test and the version of radio service

software you are using. Refer to your

radio service software user’s guide.

Reference

Oscillator

Alignment

Adjustment of the reference oscillator is critical for proper radio

operation. Improper adjustment will result not only in poor operation,

but also in a misaligned radio that will interfere with other users

operating on adjacent channels. For this reason, the reference

oscillator should be checked every time the radio is serviced. The

frequency counter used for this procedure must have a stability of 0.1

ppm (or better).

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press B again to select the REFERENCE OSCILLATOR alignment

screen. See Figure 4.

Figure 4 Reference Oscillator Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld

(starting with the highest frequency shown). Then, press F to

key the radio. The screen will indicate that the radio is

transmitting.

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

XTS Model: H24SDC9PW5AN

MAIN:SERVICE:TX ALIGN:REF OSC

REFERENCE OSCILLATOR

--------------------

Frequency Current Value

--------- -------------

519.975 150 New Softpot Value.....150

Transmitter..On

0 255

MIN |----+----+----+----+----+----+----+----+----+----+----+----| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE PROGRAM EXIT

PTT VALUE

4. Measure the transmit frequency on your service monitor.

5. Use the É/Ç arrow keys to adjust the reference oscillator softpot value.

See Table 9.

6. Press F again to dekey the radio.

7. Press H to program the new softpot value.

8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Transmit

Power

Alignment

NOTES:

•All power measurements are to be made at the antenna port.

•The transmitter power setting keeps the radiated power at or below

the level speciﬁed in the exclusionary clause for low power devices

of IEEE Standard C95.1-1991.

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press C to select the TRANSMIT POWER alignment screen. The screen

will indicate the transmit frequencies to be used. See Figure 5.

Figure 5 Transmit Power Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld (starting with

the highest frequency shown). Then, press F to key the radio. The

screen will indicate that the radio is transmitting.

4. Use the É/Ç arrow keys to adjust the transmit power per the values

shown in Table 10.

Table 9 Reference Oscillator Alignment

Band Target

UHF ±100 Hz

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

XTS Model: H24SDC9PW5AN

MAIN:SERVICE:TX ALIGN:TX POWER

TRANSMIT POWER

--------------

Current Value New Softpot Value

Frequency High Pwr Low Pwr High Pwr Low Pwr

--------- -------- ------- -------- -------

450.025 10 23 10 23

465.225 11 28 11 28

475.125 20 33 20 33

484.975 33 40 33 40

500.275 43 45 43 45

511.975 58 58 58 58

519.975 58 58 Transmitter..On 58 58

0 127

MIN |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE PROGRAM EXIT

PTT VALUE

5. Press F to dekey the radio.

6. Press H to program the value.

7. Repeat steps 3-6 for the remaining frequencies.

8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Transmit

Deviation

Balance

(Compensation)

Alignment

Compensation alignment balances the modulation sensitivity of the VCO and

reference modulation (synthesizer low-frequency port) lines. The

compensation algorithm is critical to the operation of signalling schemes that

have very-low-frequency components (for example, DPL) and could result in

distorted waveforms if improperly adjusted.

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press D to select the TRANSMIT DEVIATION BALANCE

(COMPENSATION) alignment screen. The screen will indicate the

transmit frequencies to be used. See Figure 6.

Figure 6 Transmit Deviation Balance (Compensation) Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld (starting with

the lowest frequency shown).

4. Press D. This will cause the radio to key and the radio’s DSP IC to inject

an 80Hz tone into the RF board.

5. Measure the deviation and record this value.

6. Press D to dekey the radio.

Table 10 Transmit Power Settings

UHF Power Level Test Frequencies

450-512MHz 512-520MHz

1 Watt 1.2W - 1.4W 1.2W - 1.4W

5 Watts 5.2W - 5.4W 3.2W - 3.4W

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

XTS Model: H24SDC9PW5AN

MAIN:SERVICE:TX ALIGN:BAL ATTN

TRANSMIT DEVIATION BALANCE (COMPENSATION)

-----------------------------------------

Current

Frequency Value New Softpot Value

--------- ------- -----------------

450.025 30 30

465.225 30 30

475.125 30 30

484.975 45 45

500.275 45 45

511.975 45 45

519.975 45 Transmitter..Off 45

0 63

MIN |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE LOW TOGGLE HIGH PROGRAM EXIT

TONE PTT TONE PTT VALUE

7. Press F. This will cause the radio’s DSP IC to change the injection tone

to 3kHz, 100mVrms. Use the É/Ç arrow keys to adjust the deviation to

within ±2% of the value recorded in step 5.

8. Repeat steps 4-7 until the 3kHz tone deviation is within ±2% of the 80Hz

tone deviation.

9. Press F again to dekey the radio.

10.Press H to program the new softpot value.

11.Repeat steps 3-10 for the remaining frequencies.

12.Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Transmit

Deviation

Limit

Alignment

IMPORTANT NOTE:

Put the radio in the RF test mode and scroll to

the ASTRO test environment, indicated by

“AST” on the display (refer to the

“Performance Checks” section for details). All

other deviation values are derived from the

ASTRO test environment mode transmit

deviation limit.

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press E to select the TRANSMIT DEVIATION LIMIT alignment screen.

The screen will indicate the transmit frequencies to be used. See Figure 7.

Figure 7 Transmit Deviation Limit Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld (starting with

the lowest frequency shown).

4. Press F to key the radio. Then use the É/Ç arrow keys to adjust for a

deviation per the values shown in Table 11.

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

XTS Model: H24SDC9PW5AN

MAIN:SERVICE:TX ALIGN:DEV.LIMIT

TRANSMIT DEVIATION LIMIT

------------------------

Current

Frequency Value New Softpot Value

--------- ------- -----------------

450.025 175 175

465.225 175 175

475.125 180 180

484.975 180 180

500.275 180 180

511.975 180 180

519.975 180 Transmitter..Off 180

0 32767

MIN |----+----+----+----+----+----+----+----+X---+----+----+----| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE PROGRAM EXIT

PTT VALUE

5. Press F again to dekey the radio.

6. Press H to program the softpot value.

7. Repeat steps 3-6 for the remaining frequencies.

8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Table 11 Transmit Deviation Limit

Band Deviation (Hz)

UHF 2785 - 2885

Basic Removal/Installation

Procedures 6

Introduction

to This Section This section gives basic procedures for removing and installing the XTS 3500

radio’s:

•Antenna,

•Battery,

•Belt Clip,

•Universal Connector Cover,

•Volume Knob, and

•Frequency Knob.

Antenna

Installing the

Antenna Screw the threaded end of the antenna into the antenna receptacle on the top

of the radio. Rotate the antenna clockwise until it seats ﬁrmly against the

bushing.

Removing the

Antenna Rotate the antenna counterclockwise until its threaded end unscrews from the

radio’s antenna receptacle.

Battery NOTE: The battery is shipped uncharged, and must be

charged for at least 16 hours before use.

To avoid a possible explosion:

• DO NOT replace the battery in an area labeled

“hazardous atmosphere.”

• DO NOT discard batteries in a ﬁre.

W A R N I N G

If your radio is programmed with volatile-key retention

(consult your service technician), encryption keys will be

retained for approximately 30 seconds after battery removal.

C a u t i o n

Installing the

Battery 1. Turn off the radio and hold it with the back of

the radio facing upward

2. Insert the top edge of the battery into the area

at the top of the radio between the radio’s

case and chassis. Make sure the three tabs on

the radio chassis align with the three slots

under the top edge of the battery.

3. Rotate the battery toward the radio, and

squeeze the battery and radio together until

the battery “clicks” in place.

Removing the

Battery 1. Turn off the radio and hold it so that the release

button on the bottom of the battery is facing

upward.

2. Press downward on the release button so the

battery disengages from the radio.

3. Remove the battery completely away from the

radio

Belt Clip NOTE: The battery must be removed from the radio

before the belt clip can be installed or removed.

Installing the

Belt Clip 1. Hold the battery in one hand so that the top of

the battery faces upward, and the back of the

battery faces you.

2. Holding the belt clip in the other hand with its

top facing upward, align the slide assembly on

the front of the belt clip with the slots on the

back of the battery.

3. Slide the belt clip downward toward the bottom

of the battery until the belt clip “clicks” in place.

Removing the

Belt Clip 1. Hold the battery (with belt clip installed) in one

hand so that the top of the battery faces upward,

and the front (radio side) of the battery faces

you.

2. At the top of the battery, press down on the belt

clip’s metal tab and slide the belt clip upward

until it disengages from the battery.

3. Continue to slide the belt clip upward until it is

free from the battery.

Slide

Assembly

Slots

Belt Clip

Battery

Metal

Tab

Press

Down

Universal

Connector

Cover

Installing the

Universal

Connector Cover

1. Looking at the antenna side of the radio,

insert the top (ﬂat) hooked end of the cover

into the slot on the top of the radio, above

the universal connector. Press downward on

the cover’s top to seat it in the slot.

2. While holding the cover seated in the top

slot, insert the cover’s bottom (rounded)

hooked end into the slot below the universal

connector. Press ﬁrmly inward on the cover’s

bottom until it snaps in place.

Removing the

Universal

Connector Cover

1. Looking at the antenna side of the radio,

insert a ﬂat-bladed screwdriver into the area

between the lower end of the universal

connector cover and the slot below the

universal connector.

2. Pry upward on the cover’s lower end until it

disengages from the radio.

Frequency

Knob NOTES:

•Refer to Figure 8, the Partial Exploded View, and Table 12, the

Partial Exploded View Parts List. Numbers in parentheses ( ) refer to

item numbers in Figure 8 and Table 12.

•The battery (7) should be removed from the radio before installing

or removing the frequency knob (1).

Removing the

Frequency Knob 1. Hold the radio in one hand so that the top of the radio faces upward, and

the front of the radio faces you.

2. With the other hand, grasp the frequency knob (1) and pull it upward,

while pushing it toward the back of the radio, until it is free from the

frequency insert (3).

3. While pressing the insert’s (3) two snap tabs away from the frequency

control shaft so that the insert disengages from the shaft, use needle-nosed

pliers to lift the insert up and off of the frequency control shaft.

4. Remove the secure lever (4) and the lightpipe (5).

Installing the

Frequency Knob 1. Hold the radio so that the top of the radio faces upward, and the front of

the radio faces you.

When the universal connector is not in use, keep it covered

with the universal connector cover.

C a u t i o n

Top

Slot

Bottom

Slot

Top

Hooked End

Bottom

Hooked End

2. Align the lightpipe (5) so that its straight tab is over the slot for the

illuminated pointer. Push the tab down into the slot so that it is securely

seated.

3. Place the secure lever (4) on the frequency control shaft, aligning it so that

its pointer is at the front of the radio and its two inner slots line up with

the two keys on the shaft. Slide the secure lever down to the bottom of the

shaft.

4. If you are replacing the escutcheon (2), remove the backing paper from

the escutcheon, align its alignment marker with the alignment notch

(between numbers 4 and 5) on the insert, and adhere it to the insert.

5. Place a new frequency insert (3) and escutcheon (2) on the frequency

control shaft, aligning the insert’s D-shaped hole with the D-shaped shaft.

Press downward ﬁrmly on the insert until it “snaps” in place on the shaft.

6. Place the frequency knob (1) on the frequency insert (3), aligning it’s

pointer with the number “1” on the escutcheon (2). Press ﬁrmly

downward on the knob until it seats securely in place.

Volume Knob NOTES:

•Refer to Figure 8, the Partial Exploded View, and Table 12, the

Partial Exploded View Parts List. Numbers in parentheses ( ) refer to

item numbers in Figure 8 and Table 12.

•The battery (7) should be removed from the radio before installing

or removing the volume knob (8).

Removing the

Volume Knob 1. Hold the radio in one hand so that the top of the radio faces upward, and

the front of the radio faces you.

2. With the other hand, grasp the volume knob (8) and pull it upward, while

pushing it toward the back of the radio, until it is free from the volume

insert (9).

3. While pressing the volume insert’s (9) two snap tabs away from the

volume control shaft so that the insert disengages from the shaft, use

needle-nosed pliers to pull the insert up and off of the volume control

shaft. Discard the removed volume insert.

4. Using needle-nosed pliers or some other pointed instrument, remove the

o-ring (21).

Installing the

Volume Knob 1. Place the o-ring (21) inside a new volume insert (9), and press it downward

until it seats securely at the bottom of the insert.

2. Hold the radio so that the top of the radio faces upward, and the front of

the radio faces you.

3. Place the volume insert (9) on the volume control shaft, aligning its D-

shaped hole with the D-shaped shaft. Press downward ﬁrmly on the insert

until it “snaps” in place on the shaft.

4. Place the volume knob (8) on the volume insert (9), aligning the two lugs

on the inside of the knob with the insert’s two snap tabs. Press ﬁrmly

downward on the knob until it seats securely in place.

Figure 8 Partial Exploded View

123

456

ABC

DEF

GHI

JKL

MNO

PRS

TUV

WXY

HOME

XTS 3000

Alignment Notch

Alignment Marker

Table 12 Partial Exploded View Parts List

ITEM

NO. MOTOROLA

PART NO. DESCRIPTION

1 3605370Z01 KNOB, Frequency

2 1305374Z01 ESCUTCHEON, Frequency

3 4305373Z01 INSERT RETAINER, Frequency Knob

4 4305375Z01 LEVER, Secure Frequency

5 6105376Z01 LIGHTPIPE INDICATOR/STOP, Frequency

6 NTN8266A CLIP, Belt

7 NTN8298A Battery, NiCd

8 3605371Z01 KNOB, Volume

9 4305372Z01 INSERT RETAINER, Volume Knob

10 3305574Z01 LABEL, Motorola, Back

11 - - - - - - - - - - LABEL, Flashport

12 - - - - - - - - - - LABEL, Radio Serial Number

13 - - - - - - - - - - LABEL, Approval Agency

14 3305630Z02 LABEL, Bottom

15 NAF5037A

or NAF5039A

or NAF5042A

ANTENNA, 800MHz Whip (806-870 MHz)

ANTENNA, 800MHz Dipole (806-870 MHz)

ANTENNA, 800MHz Stubby Quarterwave

(806-870 MHz)

16 - - - - - - - - - - ESCUTCHEON, Concentric Switch (optional)

17 - - - - - - - - - - ESCUTCHEON, Toggle (optional)

18 1505579Z01 COVER, Dust, Universal Connector

19 3305573Z01 LABEL, Motorola, Front

20 3505586Z01 Gortex

21 3205379W01 O-Ring

Basic Theory of

Operation 7

General

Overview The ASTRO Digital XTS 3500 radio is a wideband, synthesized, ﬁxed-tuned

radio available in the UHF band. All ASTRO Digital XTS 3500 radios are

capable of both analog operation and ASTRO mode (digital) operation in

12.5kHz or 25kHz bandwidths.

The ASTRO Digital XTS 3500 radio includes the following major assemblies:

•VOCON Board - contains the microcontrol unit (MCU) and its associated

memory and memory management integrated circuit (IC), the audio

power ampliﬁer, and a switching regulator. The board also contains the

digital signal processor (DSP) and its support IC and associated memories.

•RF Board - contains all transmit, receive, and frequency generation

circuitry including the digital receiver back-end IC and the reference

oscillator.

•Controls/Universal Flex - contains volume/on/off switch, frequency

selector switch, push-to-talk (PTT) switch, monitor button, several

function-selectable switches, universal connector, speaker, and

microphone.

•Display (Full-Featured Model Only) - a four-line, 12-character liquid

crystal display (LCD).

•Keypad (Full-Featured Model Only) - a 3 x 6 keypad.

Analog Mode

of Operation When the radio is receiving, the signal comes from the antenna connector to

the RF board, passes through the RX/TX switch and the receiver front end. The

signal is then ﬁltered, ampliﬁed, and mixed with the ﬁrst local-oscillator signal

generated by the voltage-controlled oscillator (VCO).

The resulting intermediate frequency (IF) signal is fed to the IF circuitry, where

it is again ﬁltered and ampliﬁed. This ampliﬁed signal is passed to the digital

back-end IC, where it is mixed with the second local oscillator to create the

second IF at 450kHz. It is then converted to a digital bit stream and mixed a

third time to produce a baseband signal. This signal is passed to the VOCON

board through a current-driven differential output.

On the VOCON board, the digital-signal processor (DSP) support IC digitally

ﬁlters and discriminates the signal, and passes it to the digital-signal processor

(DSP). The DSP decodes the information in the signal and identiﬁes the

appropriate destination for it. For a voice signal, the DSP will route the digital

voice data to the CODEC for conversion to an analog signal. The CODEC will

then present the signal to the audio power ampliﬁer, which drives the speaker.

For signalling information, the DSP will decode the message and pass it to the

microcontrol unit.

When the radio is transmitting, microphone audio is passed through gain

stages to the CODEC, where the signal is digitized. The CODEC passes digital

data to the DSP, where pre-emphasis and low-pass (splatter) ﬁltering are done.

The DSP passes this signal to a digital/analog (D/A) converter, where it is

reconverted into an analog signal and scaled for application to the voltage-

controlled oscillator as a modulation signal.

Transmitted signalling information is accepted by the DSP from the

microcontrol unit, coded appropriately, and passed to the D/A converter,

which handles it the same as a voice signal. Modulation information is passed

to the synthesizer along the modulation line. A modulated carrier is provided

to the RF PA, which transmits the signal under dynamic power control.

ASTRO Mode

of Operation In the ASTRO mode (digital mode) of operation, the transmitted or received

signal is limited to a discrete set of deviation levels, instead of continuously

varying. The receiver handles an ASTRO-mode signal identically to an analog-

mode signal up to the point where the DSP decodes the received data. In the

ASTRO receive mode, the DSP uses a speciﬁcally deﬁned algorithm to recover

information.

In the ASTRO transmit mode, microphone audio is processed identically to an

analog mode with the exception of the algorithm the DSP uses to encode the

information. This algorithm will result in deviation levels that are limited to

discrete levels.

RF Board Basic

Theory of

Operation

The receiver front end consists of a preselector, an RF ampliﬁer, a second

preselector, and a mixer. The RF ampliﬁer is a dual-gate, gallium- arsenide

based IC. The mixer is a double-balanced, active mixer coupled by

transformers. Injection is provided by the VCO through an injection ﬁlter. See

Table 13 for local oscillator (LO) and ﬁrst IF information.

The frequency generation function is performed by three ICs and associated

circuitry. The reference oscillator provides a frequency standard to the

synthesizer/prescaler IC, which controls the VCOB IC. The VCOB IC actually

generates the ﬁrst LO and transmit-injection signals and buffers them to the

required power level. The synthesizer/prescaler circuit module incorporates

frequency-division and comparison circuitry to keep the VCO signals stable.

The synthesizer/prescaler IC is controlled by the microcontrol unit through a

serial bus. Most of the synthesizer circuitry is enclosed in rigid metal cans on

the RF board to reduce microphonic effects.

The receiver back end consists of a two-pole crystal ﬁlter, an IF ampliﬁer, a

second two-pole crystal ﬁlter, and the digital back-end IC. The two-pole ﬁlters

are wide enough to accommodate 4kHz modulation. Final IF ﬁltering is done

digitally in the DSP.

Table 13 Local Oscillator and First IF Frequencies

UHF

LO Frequency Range 376.65-446.65MHz

First IF Frequency 73.35MHz

The digital back-end IC consists of an ampliﬁer, the second mixer, an

IF analog-to-digital converter, a baseband down-converter, and a

2.4MHz synthesis circuit to provide a clock to the DSP-support IC on

the VOCON board. The second LO is generated by discrete

components external to the IC. The output of the digital back-end IC

is a digital bit stream that is current driven on a differential pair for a

reduction in noise generation.

The transmitter consists of an RF driver IC that gets an injection signal

from the VCO and a ﬁnal-stage power ampliﬁer. Transmit power is

controlled by a power-control IC that monitors the output of a

directional coupler and adjusts PA control voltages correspondingly.

The signal passes through a RX/TX switch that uses PIN diodes to

automatically provide an appropriate interface to transmit or receive

signals. Antenna selection is done mechanically in the control top.

VOCON Board Basic

Theory of

Operation

The vocoder and controller (VOCON) board contains the radio’s

microcontrol unit with its memory and support circuits, the digital-

signal processor (DSP), its memory devices, and the DSP-support IC,

voltage regulators, audio, and power control circuits. Connected to the

VOCON board are the display board, RF board, keypad board,

controls/universal ﬂex, and (optional) encryption module.

The microcontrol unit controls receive/transmit frequencies, power

levels, display, and other radio functions, using either direct logic

control or serial communications paths to the devices.The

microcontrol unit executes a stored program located in the FLASH

ROM. Data is transferred to and from memory by the microcontrol

unit data bus. The memory location from which data is read, or to

which data is written, is selected by the address lines.

The DSP-support IC is supplied with a 16.8MHz clock from the RF

board. Both the DSP and the microprocessor have their clocks

generated by the DSP-support IC. They can both be adjusted so that

the harmonics do not cause interference with the radio’s receive

channel.

The regulator and power-control circuits include 3.3-volt analog, 3.3-

volt digital, and 5-volt regulators. The audio PA is sourced from 7.5V.

The regulator’s power-down mode is controlled by the microcontrol

unit, which senses the position of the on/off switch. The 5-volt

regulator has an error pin for low-voltage resets.

The DSP performs signalling and voice encoding and decoding as well

as audio ﬁltering and volume control. This IC performs Private-Line®/

Digital Private Line™ (PL/DPL) encode and alert-tone generation. The

IC transmits pre-emphasis on analog signals and applies a low-pass

(splatter) ﬁlter to all transmitted signals. It requires a clock on the

EXTAL pin. An 8kHz interrupt signal generated by the DSP-support IC

is also required for functionality. It is programmed using parallel

programming from the microcontrol unit.

The audio CODEC performs analog-to-digital and digital-to-analog

conversions on audio signals. The DSP controls squelch deviation, and

executes receiver and transmitter ﬁltering. The DSP-support IC

receives a 2.4MHz clock, and receives data and formats it for the DSP.

Motorola Solutions 89FT4828 Hand-held Portable Device. User Manual 89C80 O p i iv TOC

Motorola Solutions, Inc. Hand-held Portable Device. 89C80 O p i iv TOC

Instruction Manual

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