Motorola ASTRO XTS 3000 Service Manual

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ASTRO

Digital Portable Radios

XTS

™

3000

Basic Service Manual

Page 2

Page 3

XTS 3000 ASTRO Digital Radio

Basic Service Manual

Page 4

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 theexpress written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant eith er directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal no n- exclusive license to use that arises by operation of law in the sale of a product.

Document Copyrights

No duplica tion or distributio n of this document or any portion thereof shall take place without the express written permission of Motorola. No part of this manual m ay be reprod uced, distributed, or transm itted in any form or by any means, electronic or mechanical, for any purpose without the express written permission of Motorola.

Disclaimer

The information in this document is carefully examined, and is believed to be entirely reliable. However, no responsibility is assumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any products herein to improve readability, function, or design. Motorola does not assume any liability arising out of the applications or use of any product or circuit described herein; nor does it cover any license under its patent rights nor the rights of others.

Trademarks

MOTOROLA and the Stylized M logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners.

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Contents

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Chapter 1: Safety Information

1.1................................................ 1-1

Chapter 2: Model Charts and Test Specifications

2.1SpecificationsforVHFRadios................................. 2-2

2.2SpecificationsforUHFRadios................................. 2-4

2.3Specificationsfor800MHzRadios............................... 2-7

Tabl e

Contents

Chapter 3: Overview

3.1NotationsUsedinThisManual................................. 3-1

3.2RadioDescription....................................... 3-2

3.3FLASHPort.......................................... 3-3

Chapter 4: Basic Maintenance

4.1PreventiveMaintenance.................................... 4-1

4.1.1Inspection........................................ 4-1

4.1.2Cleaning ........................................ 4-1

4.1.2.1 Cleaning External Plastic Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.2 Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.2.1XTS3000RRadiosOnly ................................ 4-2

Chapter 5: Recommended Test Equipment and Service Aids

5.1RecommendedTestEquipment................................. 5-1

5.2ServiceAids.......................................... 5-2

5.3FieldProgrammingEquipment................................. 5-3

Chapter 6: Performance Checks

6.1Setup............................................. 6-1

6.2TestMode........................................... 6-2

6.2.1EnteringTestMode................................... 6-2

6.2.2RFTestMode...................................... 6-3

6.2.3ControlTopandKeypadTestMode............................ 6-5

Chapter 7: ALIGNMENT PROCEDURE

7.1General............................................ 7-1

7.2ReferenceOscillator...................................... 7-4

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Contents

7.2.1PreventativeMaintenance ................................ 7-4

7.2.2ReferenceOscillatorAlignment.............................. 7-4

7.2.2.1 Initial Setup Using R-2670 and 8900 Series Analyzers . . . . . . . . . . . . . . . . 7-5

7.3TransmitPowerAlignment................................... 7-7

7.3.1RSSandCPSProcedures................................. 7-7

7.4TransmitDeviationBalance(Compensation)Alignment..................... 7-8

7.4.1RSSandCPSProcedures................................. 7-9

7.5TransmitDeviationLimitAlignment..............................7-10

7.5.1RSSandCPSProcedures................................. 7-11

7.6FrontEndFilterAlignment(VHFandUHFonly)........................ 7-13

7.6.1RSSandCPSProcedures................................. 7-14

7.7BitErrorRateTesting.....................................7-16

Chapter 8: Basic Removal/Installation Procedures

8.1Antenna............................................ 8-1

8.1.1InstallingtheAntenna.................................. 8-1

8.1.2RemovingtheAntenna.................................. 8-1

8.2Battery............................................ 8-2

8.2.1InstallingtheBattery................................... 8-3

8.2.2RemovingtheBattery.................................. 8-3

8.3BeltClip ........................................... 8-4

8.3.1InstallingtheBeltClip.................................. 8-4

8.3.2RemovingtheBeltClip ................................. 8-5

8.4UniversalConnectorCover................................... 8-5

8.4.1InstallingtheUniversalConnectorCover......................... 8-6

8.4.2RemovingtheUniversalConnectorCover......................... 8-6

8.5FrequencyKnob........................................ 8-7

8.5.1InstallingtheFrequencyKnob.............................. 8-7

8.5.2RemovingtheFrequencyKnob.............................. 8-8

8.6VolumeKnob......................................... 8-8

8.6.1InstallingtheVolumeKnob................................ 8-9

8.6.2RemovingtheVolumeKnob............................... 8-9

8.7PartialExplodedViewandPartsList.............................. 8-10

Chapter 9: Theory of Operation

9.1GeneralOverview....................................... 9-1

9.2AnalogModeofOperation................................... 9-2

9.3ASTROModeofOperation .................................. 9-2

9.4RFBoardBasicTheoryofOperation.............................. 9-3

9.5ControllerBoardBasicTheoryofOperation........................... 9-3

9.6VocoderBoardBasicTheoryofOperation............................ 9-4

Chapter 10: Troubleshooting

10.1Power-UpErrorCodes....................................10-1

10.2OperationalErrorCodes ................................... 10-2

Glossary

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Safety Information

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Product Safety and RF Exposure Compliance

Before using this product, read the operating instructions for safe usage contained in the Product Safety and RF Exposure booklet enclosed with your radio.

Chapter

■

This radio i s restricted to occupational use only tosatisfyFCCRFenergyexposure requirements. Before using this product, read the RF energy awareness information and operating instructions in the Product Safety and RF Exposure booklet enclosed with y our radio (Motorola part number 6881095C98) to ensure compliance with RF energy exposure limits.

For a list of Motorola-approved antennas, batteries, and other accessories, visit the following website which lists approved accessories: h ttp://www.motorola.com/cgiss/index.shtml.

1.1

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Chapter 1: Safety Information

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Model Charts and Test Specifications

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Figure 2-1 Portable Radio Model Numbering System

Chapter

Typical Model Number:

Position:

Position 1 - Type of Unit

H = Hand-Held Portable

Positions 2 & 3 - Model Series

09 = XTS 3000

Position 4 - Frequency Band

Less than 29.7MHz

29.7 to 35.99MHz

36 to 41.99MHz

42 to 50MHz

66 to 80MHz

74 to 90MHz

Product Specific

136 to 162MHz

146 to 178MHz

174 to 210MHz

190 to 235MHz

Values given represent range only; they are

not absolute.

Position 5 - Power Level

0 to 0.7 Watts

0.7 to 0.9 Watts

1.0 to 3.9 Watts

4.0 to 5.0 Watts

5.1 to 6.0 Watts

6.1 to 10 Watts

Position 6 - Physical Packages

RF Modem Operation

Receiver Only

Standard Control; No Display

Standard Control; With Display

Limited Keypad; No Display

Limited Keypad; With Display

Full Keypad; No Display

Full Keypad; With Display

Limited Controls; No Display

Limited Controls; Basic Display

Limited Controls; Limited Display

Rotary Controls; Standard Display

Enhanced Controls; Enhanced Display

Low Profile; No Display

Low Profile; Basic Display

Low Profile; Basic Display, Full Keypad

Position 7 - Channel Spacing

1 = 5kHz 2 = 6.25kHz 3 = 10kHz 4 = 12.5kHz

H09 U CF 9 P W 7 A N S P 0 1

1 23 4 5 6 7 8 9 10 11 1213141516

336 to 410MHz

403 to 437MHz

438 to 482MHz

470 to 520MHz

Product Specific

806 to 870MHz

825 to 870MHz

896 to 941MHz

1.0 to 1.6GHz

1.5 to 2.0GHz

5 = 15kHz 6 = 20/25kHz 7 = 30kHz 9 = Variable/Programmable

Positions 13 - 16

"SP" Model Suffix

Position 12 -

Unique Model Variations

C = Cenelec N = Standard Package

Position 11 - Version

Version Letter (Alpha) - Major Change

Position 10 - Feature Level

1 = Basic 2 = Limited Package 3 = Limited Plus 4 = Intermediate 5 = Standard Package

Position 9 - Primary System Type

Conventional

Privacy Plus

Clear SMARTNET

Advanced Conventional Stat-Alert

Enhanced Privacy Plus

Nauganet 888 Series

Japan Specialized Mobile Radio (JSMR)

Multi-Channel Access (MCA)

CoveragePLUS

MPT1327* - Public

MPT1327* - Private

Radiocom

Tone Signalling

Binary Signalling

Phonenet

Programmable

Secure Conventional

Secure SMARTNET

6 = Standard Plus 7 = Expanded Package 8 = Expanded Plus 9 = Full Feature/ Programmable

* MPT = Ministry of Posts and Telecommunications

Position 8 - Primary Operation

Conventional/Simplex

Conventional/Duplex

Trunked Twin Type

Dual Mode Trunked

Dual Mode Trunked/Duplex

Trunked Type I

Trunked Type II

FDMA* Digital Dual Mode

TDMA** Digital Dual Mode

Single Sideband

Global Positioning Satellite Capable

Amplitude Companded Sideband (ACSB)

Programmable

* FDMA = Frequency Division Multiple Access

** TDMA = Time Division Multiple Access

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Specifications for VHF Radios Chapter 2: M ode l Charts and Test Specifications

2.1 Specifications for VHF Radios

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

Tab l e 2- 1 General Specifications

General Specifications

FCC Designation: AZ489FT3790

Temperature Range:

Operating: –30° C to +60° C

Storage: –40° C to +85° C

Power Supply:

Nickel-Cadium Battery (NiCd) or Nickel-Metal-Hydride Battery (NiMH)

Battery Voltage:

7.5 Volts

Nominal:

6to9Volts

Range:

Transmit Current D rain (Typical): 2300mA

Receive Current Drain (Rated Audio): 290mA

Standby Current Drain: 90mA

Recommended Battery:

Ultra-High-Capacity NiMH : NTN8294A

or Ultra-High-Capacity NiCd FM:

or Ultra-High Capacity NiMH FM:

NTN8295*

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 (HxWxD):

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” x1.83”/6.58” x 2.34” x 0.97” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49mm x 24.56)

With Battery:

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XTS 3000 ASTRO Digital Radio Basic Service Manual Specifications for VHF Radios

Tabl e 2-1 General Specifications (Continued)

General Specifications

6.58” x 2.44” x 1.83”/6.58” x 2.34” x.97” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 m m x 24.56 mm)

Weight: (w/Antenna):

Less Battery:

14.10 oz (383 gm)

With Ultra-High Cap. NiMH:

With Ultra-High Cap. NiCd:

23.45 oz (644 gm)

25.19 oz (693 gm)

* Specifications subject to change without notice.

Tabl e 2- 2 Receiver Specifications

Receiver

Frequency Range:

136–178 MHz

Bandwidth: 42 MHz

Quieting Sensitivity (20dBQ): 0.35µV (typical)

Usable Sensitivity (Typical) (12dB SINAD): 0.25µV

Intermodulation (Typical):

—75 dB

Selectivity (Typical)

(25/30 kHz Adjacent Channel):

Spurious Rejection:

—75dB

—70dB

Frequency Stability

(-30 to +60°C; 25°C reference): + .0002%

68P81083C8

Rated Audio: 500mW

Distortion (At Rated Audio):

Channel Spacing:

* Specifications subject to change without notice.

Tabl e 2- 3 Transmitter Specifications

Transmitter

RF Power:

136–174 MHz:

174–178 MHz:

Frequency Range:

Frequency Stability (typical)

(-30 to +60°C; 25°C ref.): + .0002%

Emission (Conducted and Radiated):

5-A March 2004

2% Typical

12.5/20/25/30 kHz

1 Watt/5 Watts

1 Watt/4 Watts

136–178MHz

—70dBc

2-3

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Specifications for UHF Radios Chapter 2: M ode l Charts and Test Specifications

Tab l e 2-3 Transmitter Specifications (Continued)

Transmitter

FM Hum and Noise (typical)

(Companion Receiver):

25/30 kHz —48dB

12.5 kHz —42dB

Distortion:

Modulation Limiting:

2% Typical

25/20 kHz chnls +

20 kHz chnls +4.0 kHz

12.5kHz chnls +2.5kHz

Emissions Designators:

20K0F1E, 16K0F3E, 11K0F3E, 8K0F1 D and 8K10F1E

* Specifications subject to change without notice.

2.2 Specifications for UHF Radios

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

5.0kHz

■

Tab l e 2- 4 General Specifications

General Specifica tions

FCC Designation: AZ489FT3804

Temperature Range:

Operating: —30°C to +60°C

Storage: —40°C to +85°C

Power Supply:

Nickel-Cadium Battery (NiCd) or Nickel-Metal-Hydride Battery (NiMH)

Battery Voltage:

Nominal:

6to9Volts

7.5 Volts

Range:

Transmit Current D rain (Typical): 1700mA

Receive Current Drain (Rated Audio): 290mA

Standby Current Drain: 90mA

Recommended Battery:

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XTS 3000 ASTRO Digital Radio Basic Service Manual Specifications for UHF Radios

Tabl e 2-4 General Specifications (Continued)

General Specifications

Ultra-High-Capacity NiCd : NTN8294A

or Ultra-High-Capacity NiCd FM:

or Ultra-H igh-C apacity NiMH FM IS:

NTN8295*

NTN8299A*

Optional FM (Factory Mutual) Battery:

• FM Intrinsically Safe: Class I, II, III, Division 1, Groups D, F, and G

Dimensions (HxWxD):

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” x1.83”/6.58” x 2.34” x 0.97” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49mm x 24.56)

With Ultra-High Capacity NiMH Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 m m x 41.97 mm)

With Ultra-High Capacity NiCd Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 m m x 41.97mm)

With Ultra-High Capacity NiCd Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 m m x 41.97mm)

With Ultra-High Capacity NiCd Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 m m x 41.97mm)

Weight: (w/Antenna):

Less Battery:

With Ultra-High Cap. NiMH:

With Ultra-High Cap. NiCd:

14.10 oz (383 gm)

23.45 oz (644 gm)

25.19 oz (693 gm)

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Specifications for UHF Radios Chapter 2: M ode l Charts and Test Specifications

Tab l e 2-4 General Specifications (Continued)

General Specifica tions

With NiMH FM IS:

23.45 oz (644 gm)

* Specifications subject to change without notice.

Tab l e 2- 5 Receiver Specifications

Receiver

Frequency Range:

403–520 MHz

Bandwidth: 70 MHz

Quieting Sensitivity (typical) (20dBQ):

Usable Sensitivity (typical) (12dB SINAD ) :

Intermodulation(typical):

0.35µV (typical)

0.25µV (typical)

—75dB (typical)

Selectivity (typical)

(25/30kHz Channel):

(12.5kHz Channel):

Spurious Rejection:

—75dB

—60dB

—70dB

Frequency Stability

(-30 to +60°C; 25°C reference): + .0002%

Rated Audio: 500mW

Distortion (At Rated Audio):

Channel Spacing:

2% Typical

12.5/20/25/25/30 kHz

* Specifications subject to change without notice.

Tab l e 2- 6 Transmitter Specifications

Transmitter

RF Power:

403–470MHz:

450–520MHz:

Frequency Range:

1 Watt/4 Watts

403–520 MHz

Frequency Stability

(-30 to +60°C; 25°C ref.): + .0002%

Emission (Conducted and Radiated):

—70dBc

FM Hum and Noise (typical)

(Companion Receiver):

25/30 kHz —43dB

12.5 kHz —38dB

Distortion:

2% Typical

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XTS 3000 ASTRO Digital Radio Basic Service Manual Specifications for 800 MHz Radios

Tabl e 2-6 Transmitter Specifications (Continued)

Transmitter

Modulation Limiting:

25/30 k Hz chnls +

20kHz chnls +4.0kHz

12.5kHz chnls +2.5kHz

Emissions Designators:

20K0F1E, 16K0F3E, 11K0F3E, 1 5K0 F1D and 8K10F1E

* Specifications subject to change without notice.

2.3 Specifications for 800 MHz Radios

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

Tabl e 2- 7 General Specifications

General Specifications

5.0 kHz

■

FCC Designation: AZ489FT3804

Temperature Range:

Operating: —30°C to +60°C

Storage: —40°C to +85°C

Power Supply:

Nickel-Cadium Battery (NiCd) or Nickel-Metal-Hydride Battery (NiMH)

Battery Voltage:

Nominal:

6to9Volts

7.5 Volts

Range:

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:

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2-7

Page 16

Specifications for 800 MHz Radios Chapter 2: Model Charts and Test Specifications

Tab l e 2-7 General Specifications (Continued)

General Specifica tions

Optional FM (Factory Mutual) Battery:

• FM Intrinsically Safe: Class I, II, III, Division 1, Groups D, F, and G

Dimensions (HxWxD):

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” x1.83”/6.58” x 2.34” x 0.97” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49mm x 24.56)

With Ultra-High Capacity NiM H Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 mm x 41.97 mm)

With Ultra-High Capacity NiCd Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 mm x 41.97mm)

With Ultra-High Capacity NiCd Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 mm x 41.97mm)

With Ultra-High Capacity NiCd Battery:

6.58” x 2.44” x 1.83”/6.58” x 2.34” x 1.65” (167.13mm x 61.90mm x 46.42mm/167.13mm x 59.49 mm x 41.97mm)

Weight: (w/A ntenna):

Less Battery:

With Ultra-High Cap. NiMH:

With Ultra-High Cap. NiCd:

With NiMH FM IS::

14.10 oz (383 gm)

23.45 oz (644 gm)

25.19 oz (693 gm)

23.45 oz (644 gm)

* Specifications subject to change without notice.

Tab l e 2- 8 Receiver Specifications

Receiver

Frequency Range:

851–870 MHz

Bandwidth: 19 MHz

Usable Sensitivity (typical) (12dB SINAD ) : 0.35 V

Intermodulation(typical):

—74 dB

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XTS 3000 ASTRO Digital Radio Basic Service Manual Specifications for 800 MHz Radios

Tabl e 2-8 Receiver Specifications (Continued)

Receiver

Selectivity

(25kHz Adjacent Channel):

Spurious Rejection:

—70dB

Frequency Stability

(-30 to +60°C; 25°C reference): + .00015%

Rated Audio: 500mW

Distortion (At Rated Audio):

Channel Spacing:

3% Typical

25 kHz

* Specifications subject to change without notice.

Tabl e 2- 9 Transmitter Specifications

Transmitter

RF Power:

Frequency Range:

3Watts

806–825 MHz

Frequency Stability + .00015%

(-30 to +60°C; 25°C ref.):

Emission (Conducted and Radiated):

FM Hu m and Noise

—46dBw

—40dB

(Companion Receiver):

Distortion:

Modulation Limiting:

(821–824MHz):

Emissions Designators:

20K0F1E, 16K0F3E, 15K0F2D, 15K0F1D and 8K10F1E

* Specifications subject to change without notice.

3% Typical

5kHz

4kHz

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Specifications for 800 MHz Radios Chapter 2: Model Charts and Test Specifications

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Page 19

Overview

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This m anual covers information needed for level one troublesho oting. 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 w ill be the only level of service allowed for the servi ce centers, self-maintained customers, an d distributors for the first six months of the life of this product.

Included in this manual are radio specifications for the 800MHz frequency band, a general description of XTS 3000 models, recommended test equipment, service aids, radio alignment procedures, general maintenance recommendations, and procedures for basic assembly and disassembly.

Chapter

■

3.1 Notations Used in This Manual

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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 m ust be taken and observed.

An operational procedure, practice, or condition that is essential to em phasize.

CAUTION indicates a potentially hazardous situation which, if not avoided, might result in equipment damage.

■

68P81083C8

5-A March 2004

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or injury.

3-1

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Radio Description Chapter 3: Overview

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or injury.

3.2 Radio Description

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■

The ASTRO Digital XTS 3000 radios are amo ng the most sophisticated two-way radios available. The radio is presently available in the 800MHz band; radios in the UHF and VHF bands will be available by the end of 1996.

One of th e newest in a lon g line of quality Motorola prod ucts, the ASTRO Digital XTS 3000 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. S uch features add up to better, more cost-effective two-way radio communications.

ASTRO Digital XTS 3000 radios are available in two basic models. Tab le 3- 1 provides a description of their basic features.

Tab l e 3-1 ASTRO XTS 3000 Basic Features

Feature Model I Model II Model III

Display

Keypad

Channel C apability

Dialing from Prestored

None

LCD 4 lines/12 characters per line

LCD 4 lines/ 12 characters per line

3x2 button 3x6 button

48 255 255

No Yes Yes

List

Programmable Softkeys

No Yes Yes

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Page 21

XTS 3000 ASTRO Digital Radio Basic Service Manual FLASHPort

3.3 F LASHPort

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■

The ASTRO Digital XTS 3000 radio utilizes Motorola’s revolutionary FLASHPort technology. FLASHPort makes it possible to add software that drives the r adio’s capabilities both at the time of purchase and later on. Previously, changing a radio’s featu res 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 upg raded with FLASHPort software.

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FLASHPort Chapter 3: Overview

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Page 23

Basic Maintenance

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

This section of the manual describes preventive m aintenance and handling precautions. Each of these topics provides information vital t o the successful operation and maintenance of your radio.

4.1 Preventive Maintenance

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

Chapter

■

The ASTRO Digital XTS 3000 radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recom mended.

4.1.1 Inspection

Check that the external surfaces of the radio are clean, and that all external controls and functional. A detailed inspection of the interior electronic circuitry is not needed.

4.1.2 Cleaning

The following procedure 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

The only r a mild dish washing detergent, such as JOY

reveals the presence of smudges, grease, and/or grime.

ecommended agent for cleaning the external radio surfaces is a 0.5% solution of

switches are

s describe the recommended cleaning agents and the methods to be

, in water.

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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.

4-1

Page 24

Cleaning External Plastic Surfaces Chapter 4: Basic Ma intenance

4.1.2.1 Cleaning External Plastic Surfaces

The detergent-water solution should be applied sparingly with a stiff, nonmetallic, short-bristled brush to work all lo ose dirt aw ay from the radio. A soft, absorbent, lint-free 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.

4.2 Handling Precautions

■■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■

■

This section outlines handling precautions when working with the XTS 3000 R Radio.

4.2.1 XTS 3000 R Radios Only

In XTS 3000 R radios, the “R” signifies the radio is a Rugged-type radio designed to withstand adverse field conditions such as being submersed in water.

• The XTS 3000 R r adio casting has a vent hole that allows for pressure equalization in the

radio. Never poke this vent with any objects such as needles, tweezers or screwdrivers. This creates a leak path into the radio and the radio’s submersibility is lost.

• The pressure equalization vent is located on the chassis, just below the battery contact.

Never obstruct or cover the two slots with any object, including a label. Ensure that no oily substances come in contact with this vent.

4-2

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XTS 3000 ASTRO Digital Radio Basic Service Manual XTS 3000 R Radios Only

• The XTS 3000 R radio is designed to be submersed to a maximum depth of 6

feet and a maximum submersion time of 4 hours. Exceeding either maximum limit may result in damage to the radio.

a. If the radio has been submersed in water, shake the radio well to remove

any water that may be trapped inside the speaker grille and microphone port. Otherwise, the water could cause decreased audio capabilities.

b. If the radio’s battery contact area has been exposed to water, dry and clean

battery contacts on both the radio and the battery before attaching the battery to the radio. Otherwise, the water could short-circuit the radio.

c. If the radio has been submersed in a corrosive medium (such as salt water), rinse

the radio and battery in fresh water and dry the radio and battery.

d. To clean the exterior surfaces of the radio, use a diluted solution of mild dish washing

detergent and fresh water (one teaspoon of detergent to one gallon of water).

e. Do not disassemble the radio. This could damage radio seals and result

in leak paths into the radio. Radio maintenance should be performed only by a qualified service person.

f. Elastomer technology materials used for seals in rugged portable radios can age

with time and environm ental exposure. Therefore, Motorola recommends that rugged radios be checked annually to assure the watertight integrity of the radio.

Complementary m etal-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.

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XTS 3000 R Radios Only Chapter 4: Basic Ma intenance

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Chapter

Recommended Test Equipment and Service Aids

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■

This chapter discusses recommended test equipment and service aids.

5.1 Recommended Test Equipment

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

The list of equipment contained in Table 5- 1 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 p rovided in this column, the specific Motorola model listed is either a unique item or no substitution is recommended.

Tabl e 5- 1 Recommended Test Equipment

Motorola Model

Number

R2670 or R2600

R1049A* Digital Multimet e r Recommended for

Description

System Analyzer This monitor will

Characteristics

substitute for items with an asterisk (*).

■

Application

Frequency/deviation meter and signal generator for wide-range troubleshooting and alignment.

AC/DC voltage and cur measurements.

rent

68P81083C8

R1150C* Code Synthesizer

S1053D* SKN6008A* SKN6001A*

5-A March 2004

AC Voltmeter Power Cable for Meter Test Leads for Meter

1mV to 300V, 10–Megohm input impedence

Injection of audio and digital signalling codes.

Audio voltage measurements.

5-1

Page 28

Service Aids Chapter 5: Recom m ended Test Equipment and Service Aids

Tab l e 5-1 Recommended Test Equipment (Continued)

Motorola Model

Number

R1094A

S1350C* ST1213B(VHF)* ST1223B(UHF)*

R1065

S1339A

R1013A*

S1347D or S1348D (programmable)

Description

Dual-Trace Oscilloscope

Wattmeter Plug-In Element RF Dummy Load

Characteristics

20MHz bandwidth 5mV to 5V/division

50–ohm, + 5% accuracy 10 watts, maximum 0–1000MHz, 300W

Load Resistor 10–watt Broadband For use with

RF M illivolt Meter

100µVto3VRF

SINAD Meter

DC Power Supply 1–20Vdc, 0–5 Amps

current limited

5.2 Service Aids

■■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■

Application

Waveform measurements

Transmitter power output measurements.

wattmeter.

RF-level measurements.

Receiver sensitivity measurements.

Bench supply f or

7.5Vdc

■

Refer to Tab le 5-2 , Service Aids, for a listing and description of the service aids designed specifically for servicing this family of radios. These kit s and/or parts are available from the Moto rol a 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, m ost are standard shop equipment items, and any equivalent item capable of the same performance may b e substituted for the item listed.

Tab l e 5- 2 Service Aids

Motorola Part

Number

RKN-4035D

Description Application

RIB/Radio/Test

Set Cable

Connects radio t

o RTX-4005B Test Box

and RIB.

REX-4424

RLN-4460A, or RTX-4005B, or both

4005A and

RTX-

Battery Eliminator Interconnects radio to power supply.

Portable Test Set Enables connection to the universal

nector. Allows switching for radio

con testing.

RPX-4665A

Field Modification Kit RLN-1015A or RLN-4008B

Radio Interface Box Enables communications between

the radio and the computer’s serial communications adapter.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Field Programming Equipment

Tabl e 5- 2 Service Aids (Continued)

Motorola Part

Number

01-80357A57

01-80358A56

30-80369B71 or 30-80369B72

Description Application

Wall-Mounted Power Supply

Used to supply power to the RIB (120 Vac).

Used to supply power to the RIB (220 Vac).

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 B NC

cabling of test equipment.

5.3 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 prog ram ming information.

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Field Programming Equipment Chapter 5: Recommended Test Equipment and Service Aids

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Performance Checks

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

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.

Chapter

■

6.1 Setup

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

Supply voltage can be connected from the battery elim inator. The equipment required for alignment procedures is connected as show n in the “Radio Alignment Test Setup” diagram (Ta ble 5-1).

Initial equipment control settings should be as indicated in the following table, and should hold for all alignment procedures except as noted in Figure 7-1.

Tabl e 6-1 Initial Equipment Control Settings

System Analyzer Test Set Power Supply

Monitor Mode: Pwr Mon Spkr Set: A

RF Attn: —70dB Spkr/Load: Speaker DC On/Standby: Standby

AM, C W, FM: FM

O’scope Source: Mod O’scope Horiz: 10mSec/Div O’scope Vert:2.5kHz/Div O’scope Trig:Auto O’scope Image:Hi O’scope BW:Nar O’scope Squelch:Mid CW O’scope Vol: 1/4 CW

PTT: OFF (center) Volt R a n ge: 10Vdc

Voltage: 7.5Vdc

Current: 2.5 Amps

■

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Test Mode Chapter 6: P erformance Checks

6.2 Test Mode

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■

This section describes test mode functionality.

6.2.1 Entering Test Mode

Follow the procedure below to enter test mode.

Procedure 6-1 Entering Test Mode

Turn the radio on.

Within 10 seconds after the self test is complete, press Side Bu tton 3 five tim es in succession.

The radio will show a series o f displays that will give information regarding various version numbers and subscriber specific information. The displays are described by the following table, “Front Panel Access Test Mode Displays” (Tab le 6- 2).

Press Side Button 1 to stop the displays and put the radio into the Control Top and Keypad test mode. The test mode menuCH TEST is displayed. Go to the “Control Top and Keypad Test Mode” section.

Each press of the Side Button 1 will toggle between CH TES T and RF TEST.

Press the Top Programmable Button (Emergency button) to stop the displays and put t he radio into the RF test mode. The test mode menu 1 CSQ will be displayed, indicating test frequency 1

,Carrier SQelch mode. Go to the RF Test Mode section.

The table below describes front panel access test mode displays.

Tab l e 6-2 Front Panel Access Test Mode Displays

Name of Display

“SERVICE”

The literal string indicates the radio has entered

Description Appears

Always

test mode.

Radio H ost Software Version The version of radio firmware is displayed. Always

DSP Software Version The version of firmware being used by the

Always

DSP.

EMC Secure Version Version of the encryption hardware. When the

radio is secure equipped.

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XTS 3000 ASTRO Digital Radio Basic Service Manual RF Test Mode

Tabl e 6-2 Front Panel Access Test Mode Displays (Continued)

Name of Display

Encryption Type 1 Type of encryption being used. When the

Encryption Type 2 Type of encryption being used. When the

Model Number The radio’s model number as programmed in

the codeplug.

Serial Number The radio’s serial number as programmed in

the codeplug.

ROM Size The memory capacity of the FLASH part. Always

FLASHcode The FLASHcodes as programmed as a part of

the radio’s codeplug.

All displays are temporary and will expire without any user intervention. If information is longer than the physical length of the radio’s display, the information wraps to the next display. After the last display, RF TEST is displayed.

Description Appears

radio is secure equipped.

Always

6.2.2 RF Test Mode

When the ASTRO Digital XTS 3000 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 r emoved fro m its normal environment. It cannot receive commands from its system and 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 into the radio.

Procedure 6-2 RF Test Mode Procedure

Each additional press of Side Button 3 will advance to the next test channel. (Refer to Tab le 6 -3.)

Pressing Side Button 2 will scroll through and access test environments as shown in Tab le 6 -4.

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RF Test Mode Chapter 6: P erformance Checks

Transmit into a load when keying a radio under test.

Tab l e 6- 3 Test Frequencies

Test Channel

VHF UHFBand1 UHF Band 2 800MHz

TX#1 136.025 403.100 450.025 806.0125

RX#1 136.075 403.150 450.075 8 51.06 25

TX#2 142.125 424.850 465.225 815.0125

RX#2 142.075 424.900 465.275 8 60.06 25

TX#3 154.225 438.050 475.225 824.9875

RX#3 154.275 438.100 475.275 8 69.93 75

TX#4 160.125 444.050 484.975 851.0125

RX#4 160.175 444.100 485.025 8 51.06 25

TX#5 168.075 456.350 500.275 860.0125

RX#5 168.125 456.400 500.225 8 60.06 25

TX#6 173.975 463.700 511.975 869.9875

RX#6 173.925 463.750 511.925 869.9375

TX#7 177.975 469.650 519.975

RX#7 177.925 469.700 519.925

None

Test environments are described in the table below.

Tab l e 6- 4 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)

RX: none TX: 1200 Hz tone

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

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XTS 3000 ASTRO Digital Radio Basic Service Manual Control Top and Keypad Test Mode

6.2.3 Control Top and Keypad Test Mode

See procedure below to enter control top and keypad test mode.

Procedure 6-3 Entering Control Top and Keypad Test Mode

Next,pressandholdtheTop Programmable Button; all segments on the display will light , and the LED on the control top will illuminate a red color.

Release the Top Programmable Button; 3/0 appears, which indicates that the Top Programmable Button is in the open condition.

Press the Top Programmable Button again; 3/1appears, which indicates that the Top Programmable Button is in the closed condition.

Rotate the Mode/Zone Selector Switch; 4/0 through 4/15 appears, which indicates th at the selector switch is in mode/zone position 1 through 15.

Rotate the Two-Position Concentric Switch; 65/0 and 65/1 appear.

Rotate the Three-Position Programmable Switch; 6 7/0, 67/1,and67/2 appear.

Rotate the Volume Co ntrol; 2/0 through 2/255 appear.

Press Side Button 1; 96/1 appears; release, 96/0 appears.

Press Si de Button 2; 97/1 appears; release, 97/0 appears.

Press Side Button 3; 98/1 appears; release, 98/0 appears.

Press the PTT Switch; 1/1 appears; release, 1/0 appears.

Keypad Checks:

-Press0, 48/1 appears; release, 48/0 appears.

-Press1, 49/1 appears; release, 49/0 appears.

-Press2, 50/1 appears; release, 50/0 appears.

-Press3, 51/1 appears; release, 51/0 appears.

-Press4, 52/1 appears; release, 52/0 appears.

-Press5, 53/1 appears; release, 53/0 appears.

-Press6, 54/1 appears; release, 54/0 appears.

-Press7, 55/1 appears; release, 55/0 appears.

-Press8, 56/1 appears; release, 56/0 appears.

-Press9, 57/1 appears; release, “ 57/0” appears.

-Press*, 58/1 appears; release, 58/0 appears.

-Press#, 59/1 appears; release, 59/0 appears.

-Press<, 128/1 appears; release, 128/0 appears.

-PressO, 129/1 appears; release, 129/0 appears.

-Press>, 130/1 appears; release, 130/0 appears.

- Press the left-hand M key on the top row of keys, 131/1 appears; release, 131/0 appears.

- Press the center N key, 132/1 appears; release, 132/0 appears.

- Press the right-hand M key, 133/1 appears; release, 133/0 appears.

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Control Top and Keypad Test Mode Chapter 6: P erformance Checks

The following table contains information for receiver performance checks.

Tab l e 6- 5 Receiver Performance Checks

Tes t Name

Reference Frequency

System Analyzer

Mode: PWR MON 4th channel test frequency

Monitor:

Frequency error. InputatRFIn/Out

Rated Audio

Mode: GEN

Output Level:

1.0mV RF 4th channel test frequency MOD: 1kHz tone at 3kHz deviation

Monitor:

Frequency error. InputatRFIn/Out

Distortion As above, except to

distortion

Sensitivity (SINAD)

As above, except SINAD; lower the RF level for 12dB SINAD

Radio

TEST MODE, 4 CSQ output at antenna

Tes t S et Comments

PTT to continuous

Frequency error

to be < (during the performance

+ 1.2kHz

checks)

TEST MODE, 4 CSQ

PTT to OFF (center); meter selector to Audio

Set volume

control to

3.74Vrms

As above As above Distortion <3.0%

As above

PTT to OFF (center)

RF input to be

0.35µV

Noise Squelch Threshold (only radios with conventional system need to be tested)

1. See Table 6.

2. See Table 6.

RF lev e l set to 1mVRFAs above

As above, except change frequency to a conventional system. Raise RF level from zero until

Out of TEST MODE; select a conventional system

radio unsquelches.

PTT to OFF (center): meter selection to

Set volume

control to

3.74Vrms Audio PA; spkr/load to speaker

As above Unsquelch

to occur at <0.25µV. Preferred SINAD = 8–10dB

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XTS 3000 ASTRO Digital Radio Basic Service Manual Control Top and Keypad Test Mode

The following table contains information necessary for transmitter performance checks.

Tabl e 6- 6 Transmitter Performance Checks

Tes t Nam e

Reference Frequency

Power RF

Vo i c e Modulation

Vo i c e Modulation (Internal)

System

Analyzer

Mode: PWR MON 4th channel test frequency

Monitor:

Frequency error.

Radio

TEST MODE, 4 CSQ

Tes t S et Comments

PTT to continuous

Frequency error

to be < (during the performance checks)

Input at RF In/Out

As above As above, 4 CSQ As above Refer to

Maintenance

Specifications

page in front of

manual.

Mode: PWR MON 4th channel test frequency

attenuation to

As above, 4 CSQ As above, meter

selector to mic

Deviation:

800MHz:

3.6Hz but <

5.0kHz —70, input to RF In/Out. Monitor: DVM, ac Volts. Set 1kHz Mod Out level for

0.025 Vrms at test set, 80m Vrms at ac/dc test set jack

Mode: PWR MON 4th channel test frequency

attenuation 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: 800MHz:>

3.8kHz but <

5.0kHz

+ 1.2kH z

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PL Modulation (radios wit h conventional, clear mode, coded squelch operation only )

5-A March 2004

Change frequency to a conventional transmit frequency; BW to narrow

Conventional coded squelch personality (clear mode operation) 4 TPL

As above

Deviation: 800MHz:

500Hz but <

1000kHz

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Page 38

Control Top and Keypad Test Mode Chapter 6: P erformance Checks

Tab l e 6-6 Transmitter Performance Checks (Continued)

Test Name

Talkaround Modulation (radios wit h conventional, clear mode, talkaround operation only)

System

Analyzer

Change frequency to conventional talkaround frequency. Mode: PWR MON deviation, attenuation to

Radio

Conventional talkaround personality (clear mode operation) 1 CSQ

Tes t S et Comments

As above

Deviation: 800MHz:

3.8Hz but <

5.0kHz

—70, input to R F In/Out. Monitor: DVM, ac volts Set 1kHz Mod Out level for 25mVrms at test set.

Talkaround Modulation (radios wit h conventional, secure mode, talkaround operation only

Change frequency to conventional talkaround frequency. Mode: PWR MON deviation,

attenuation to

)

Conventional talkaround personality (secure mode operation). Load key into radio 1 sec.

As above

Deviation: 800MHz:

3.6Hz but <

4.4kHz

—70, input to R F In/Out. Monitor: DVM, AC volts Mod:1kHz out level for 25mVrms at test set.

1. See Table 6.

2. See Table 6.

3. See Table 6.

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

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Page 39

ALIGNMENT PROCEDURE

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

The following procedures are to be used for the alignment of al l Motorola ASTRO Digital portable radios with HP8901B Modulation Analyzer and R2670 Communication Analyzer.

These procedures are to be used in conjunction with the instructions listed in the Motorola Radio Service Software (RSS) / Customer Programming Software (CPS) tuner under t he Help key for each test to be performed. However, in the even of a conflict in procedure, those specified in this document shall take precedence.

Chapter

■

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.

7.1 General

■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■

An IBM personal computer (PC) and radio service software (RSS) are required to align the radio. Refer to the applicable R SS manual for installation and setup procedures for the softw are. 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 7-1.

■

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Page 40

General Chapter 7: ALIGNME NT PROCE DURE

Figure 7-1 Radio Alignment Test Setup

BATTERY

ELIMINATOR

RTL-4224A

RADIO

SMA-BNC

58-80348B33

PROGRAM/TEST CABLE

RKN-4046A

RIB

RLN-4008B

RIB POWER SUPPLY

01-80357A57 (120V)

30 dB PAD

TRANSMIT

30 dB PAD

BNC

RF GENERATOR

RECEIVE

SET TO APPROX. 450mV FOR Tx

AUDIO IN

TEST SET

RTX-4005B

MEASURE 80mV FOR Tx

COMPUTER INTERFACE

CABLE

30-80369B71

30-80369B72 (IBM "AT" ONLY)

SYSTEM ANALYZER

AUDIO GENERATOR

DATA BUSY GND

OR COUNTER

WATTMETER

SINAD METER

AC VOLTMETER

COMPUTER

All service and tuning procedures are performed from the Service menu, which is selected by pressing F2 from the Main Menu. Figure 7-2 illustrates how the RSS alignment Service screens are organized.

7-2

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XTS 3000 ASTRO Digital Radio Basic Service Manual General

Figure 7-2 RSS Service Menu Layout

SERVICE

TRANSMITTER ALIGNMENT MENU

F2 -

HELPF1 -

REFERENCE OSCILLATOR ALIGNMENT

F2 -

F3 -

TRANSMIT POWER ALIGNMENT

F4 -

TRANSMIT DEVIATION BALANCE (COMPENSATION) ALIGNMENT

F5 -

TRANSMIT DEVIATION LIMIT ALIGNMENT

EXIT, RETURN TO SERVICE MENUF10 -

F3 -

RECEIVER ALIGNMENT MENU

FRONT END BANDPASS FILTER ALIGNMENTF2 -

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 S P

OTentiometer used for adjusting all transceiver alignment controls.

OFTware-controlled

Each Service screen provides the capability to increase or decrease the ‘softpot’ value with the keyboard Up/Down arrow keys. A graphical scale is displayed indicating the minimum, maximum, and proposed value of the softpot, as shown in Figure 7-3.

Figure 7-3 Softpot Concept

015

Min.

Value

Max.

Value

68P81083C8

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 corresp ond ing to a digital-toanalog (D/A) g enerated voltage in the radio.

Perform the following procedures in the sequence i ndicated.

5-A March 2004

7-3

Page 42

Reference Oscillator Chapter 7: ALIGNME NT PROCE DURE

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 guide.

7.2 Reference Oscillator

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The following section describes service of the reference oscillator.

7.2.1 Preventative Maintenance

Radios are shipped from the factory with worst-case frequency error of +/- 250 Hz for VHF, +/-750 Hz for UHF, +/-75 0Hz for 800 MHz and +/- 1KHz for 900 MHz. These specifications are tighter than the most stringent FCC required specs of 2 ppm, 2 ppm, 1.5 ppm and 1.5 ppm (part per million) for VHF, UHF, 800 MHz, and 900 MHz respectively, within which the r a di o will operate to specification.

For radios that have been in storage for over 6 m onths from the factory ship date, the reference oscillator should be checked upon initial radio deployment to the field. It is also strongly suggested that the reference oscillator be checked every t im e the radio is serviced or once a year, whichever comes first.

The crystal contained in the reference oscillator naturally drifts over time due to its aging characteristic. This drift can be expected to be in the negative direction from the original factory setting. Therefore, periodic (annual) adjustment of the reference oscillator is important for proper radio operation. Improper adjustment can result not only in poor performance, but also in interference with other users operating on adjacent channels. A recommended test setup and tuning procedure is detailed in the alignment section of this manual. The frequency counter used for this procedure must have a stability of 0.1 ppm or better.

7.2.2 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 o n 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).

This test can be done with either the R2670 Communication Analyzer or the 8901B Modulation Analyzer.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Initial Setup Using R-2670 and 8900 Series Analyzers

7.2.2.1 Initial Setup Using R-2670 and 8900 Series Analyzers

Use the following procedure for initial setup using an R–2670 Communication Analyzer.

Procedure 7-1 Initial Setup Using the R-2670 Communication Analyzer

Set RF Control: to MONITOR.

2 Set B/W: to WB.

3 Set Freq: to RSS frequency under test.

4 Set Attenuation: to 20dB

Set Mon RF in: to RF I/O.

6 Set Meter: to RF Display.

Set Mode: to STD.

Set Input Level: to uV or W.

9 Set Display: to Bar Graphs.

Set Squelch: to Midrange or adjust as necessary.

Use the following procedure for initial setup using an 8900 Series Modulation Analyzer.

Procedure 7-2 Initial Setup Using the 8900 Series Modulation Analyzer

Press the green Au to matic Operation button on the analyzer.

Press the Freq key.

Type 7.1 followed by SPCL button to set the 8901B modulation analyzer for maximum accuracy.

Continue with RSS or CPS procedure below.

7.2.2.1.1 RSS and CPS Procedures

Use the following RSS procedure when applicable.

Procedure 7-3 RSS Procedure

Read the radio using RSS (Radio Serv ice Software).

From the Service Menu,pressF2 to select Transmitter Alignme nt Menu.

Press F2 again to select Reference Oscillator alignment screen.

If using the R–2670, in the RF Control section of the R-2670 enter the frequen cy displayed on the RSS screen. Under the Meter section of the display, choose RF Display.

Press F6 to key the radio. The RSS screen will indicate that the radio is transmitting.

Wait 5 seconds until the analyzer reading settles. Record the transmitter frequency (or note the frequency error reading on the screen).

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RSS and CPS Procedures Chapter 7: ALIGNME NT PROCE DURE

Procedure 7-3 RSS Procedure (Continued)

Use the Up/Down arrow key on your PC key board to adjust the reference oscillator softpot value. Allow about 5 seconds for the analyzer’s frequency reading to settle after each change. Adjust the frequency error in accordance with Tab le 7 -1.

Press F6 again to dekey the radio.

Press F8 to program the new softpot value.

Press F10 once to return to Transmitter Alignment menu.

The following table contains target band information for Reference Oscillator Alignment.

Tab l e 7- 1 Reference Oscillator Alignment

Band Target

VHF

UHF

800 MHz

+/-60 Hz

+/-150 Hz

0Hz/+300Hz

Use the following C PS procedure when applicable.

Procedure 7-4 CPS Procedure

Read the radio (File/Read Device).

Double click on ASTRO Tuner to select it.

Double click on Transmitter Alignments to select it.

Double click on Reference Oscillator to select it.

If using the R2670, in the RF control section of the R-2670 enter the frequency displayed on the RSS screen. Under the Meter section of the display, choo se RF Display.

Select the PTT button on the screen to key the radio. The screen indicates whether the radio is transmitting.

Wait 5 seconds until the analyzer reading settles. Record the transmitter frequency.

ClickontheUp/Down arrow on the monitor to adjust the reference oscillator softpot value. Allow about 5 seconds for the analyzer’s frequency reading to settle after each change. Adjust the frequency error in accordance with Tabl e 7-1 .

Select the Program button on the screen to de-key the radio and save the tuned values.

Select the Close button on th e screen to return to the Transmitter Alignments menu.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Transmit Power Alignment

7.3 Transmit Power Alignment

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This test can be done using the R2670 Communication Analyzer, the 8900 series Modulation Analyzer or a Power Meter. Setup the equipment to read Output Pow er.

• This alignment procedure adjusts the transmit power of the radio and must be performed

for three different power levels (Low, Mid, and High), at multiple frequencies for each powerlevel,toallowforproperalignm ent across the entire RF band.

• 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.

7.3.1 RSS and CPS Procedures

Use the following RSS procedure when applicable.

Procedure 7-5 RSS Procedure

From the Service menu, press F2 to select the Transmitter Alignments menu.

Press F3 to select the Transmi t P ower alignm ent screen. The screen will indicate the transmit frequencies and power levels to be used.

Press Tab key (or Enter or Return) to select a frequency field (starting with the highest freq uency shown). Then, press F6 to key the radio. The screen will indicate that the radio is transmitting.

Use the Up/Down arrow keys to adjust the transmit power per the values specified in the specifications.

Press F6 to dekey the radio.

Press F8 to program the softpot value.

Repeat steps 3-6 for the remaining frequencies.

Press F10 once to return to the Tr ansm itte r A lign ment menu, or press F10 twice to return to the Service menu.

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Transmit Deviation Balance (Compensation) Alignment Chapter 7: ALIGNMENT PROCEDURE

Use the following C PS procedure when applicable.

Procedure 7-6 CPS Procedure

Under the Transmitter Alignments menu, select TX Power High. The screen will indicate the transmit frequencies to be used.

Select a frequency field (starting with the highest frequency shown) and select the PTT buttontokeytheradio.

Select the Up/Down arrow keys under New Softpot Value window to adjust the transmit power per the values sp ecified in the specifications.

Select the PTT button again to dekey the radio.

Select Program button to program the softpot value.

Repeat steps 2-5 for the remaining frequencies.

Select the Close buttontoreturntotheTran smit ter Ali gnme nts menu.

Repeat steps 1-7 for the remaining Transmit Power Levels.

7.4 Transmit Deviation Balance (Compensation) Alignment

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This test can be done with either the R–2670 Communication Analy zer or th

e8900series

Modulation Analyzer. The instrument of choice is the R2670 analyzer.

Use the following procedure for initial setup using an R–2670 Communication Analyzer.

Procedure 7-7 Initial Setup Using the R–2670 Communication Analyzer

Connect a BNC cable between the “DEMOD OUT” port and the “VERT/SINAD DIST/DMM COUNTER IN” port on the R-267 0.

Press the SPF k ey on the R-2670 to display the SPECIAL FUNCTIONS menu. Move the cursor to Hig

h Pass, and select 5Hzvia the soft key menu. Select 20

kHz for the Low Pass setting.

In the RF Control section of the R-2670 enter the fre quen cy displayed on the RSS screen (choose a test frequency from the list of frequencies displayed under

smit Deviation balance (Compensation) in RSS). Move the cursor to the

Tran B/W setting and select WIDE +/- 100 kHz via the soft key menu.

Place the R-2670 cursor in the Display zone. Select AC VOLTS on the soft key menu. Mo ve the cu rsor to th e Range setting and select AUTO.

Continue with RSS or CPS procedure listed below.

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XTS 3000 ASTRO Digital Radio Basic Service Manual RSS and CPS Procedures

Use the following procedure for initial setup using an 8900 Series Modulation Analyzer.

Procedure 7-8 Initial Setup Using the 8900 Series Modulation Analyzer

Press the FM Measurement button. (Error 03-input level too low. This indication is normal until an input signal is applied).

Simultaneously press the Peak– and Peak + buttons. Both LEDs on the buttons should be lit.

Press the 15kHz LP Filter button. Continue with RSS or CPS procedure below.

7.4.1 RSS and CPS Procedures

Use the following RSS procedure when applicable.

Procedure 7-9 RSS Procedure

From the TRANSMITTER ALIGNMENT menu press F4 to select the Transmit Deviation B alance (Compensation) alignment screen.

Use the Tab key to select and to start alignment at the lowest frequency listed. Press F4 to key the radio (80 Hz low tone). Wait approximately 5 seconds until the frequency displayed on the analyzer settles.

Measure and record the deviation value from the 8901B analyzer or the AC voltage value from the R2670

Press F4 to dekey the radio.

Press F6 to key the radio (3 kHz high tone). Wait appr the deviation (8901B)/voltage (R2670) displayed on the analyzer settles.

Use the com puter UP/DOWN arrow keys to adjust the deviation/v oltage to within +/-1.5%ofthevalu the d eviation /vo ltag e of the “3 KHz high tone” injection as close as possible to that of the “80 Hz low tone” injection).

Press F6 to de-key the radio.

Press F8 to program the new softpot value.

Repeat steps 3-8 for each of the remaining frequencies. Note – test frequency #7 (ex. 519.9 750 MHz for UHF Range 2) is not normally used and therefore does not require alignmen t.

Press F10 once to return to the TRANSMITTER ALIGNMENT menu.

e recorded for the 80 Hz low tone above (the goal is to adjust

oximately 5 seconds until

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Transmit Deviation Limit Alignment Chapter 7: ALIGNMENT PROCEDURE

Use the following C PS procedure when applicable.

Procedure 7-10 CPS Procedure

Under the TRANSMITTER ALIGNMENTS menu, double click on TX Deviation Balance (Compensation) to select it. The screen will indicate the

transmit frequencies to be used.

Select the desired frequency field (starting with the lowest frequency shown on the top of the screen).

Select the PTT Tone: Low button.

Select the PTT toggle button on the screen to make the radio transmit. The screen indicates wh ether the radio is transm itt ing . Wait approximately 5 seconds until the deviatio n (8901B)/voltage (R2670) displayed on the analyzer settles.

Measure and record the deviation/voltage value from the 8900 series analyzer or the AC voltage value from the R2670.

Select the PTT tog gle button on the screen to stop transmitting.

Select the PTT Tone: High button.

Adjust the softpot value until the measured deviation/voltage, when using the high tone, is within +/- 1.5% of the value recorded in step 5 (the Low tone value).

Select the PTT tog gle button on the screen to stop transmitting.

Select the PTT toggle button again to verify the deviation setting.

Select the Program button to program the new softpot value. Repeat steps 3-10 to ensure the correct deviation balance value has been saved.

Repeat steps 3-11 for each of the remaining frequencies. Note – test frequency #7 (ex. 519.9750 MHz for UHF Range 2) is not normally used and th erefore does not require alignment.

Select the Close button on the screen to return to the TRANSMITTER ALIGNMENTS menu.

7.5 Transmit Deviation Limit Alignment

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This test can be done with either the R–2670 communication Analyzer or the 8900 series Modulation Analyzer. The method of choice is the R–2670.

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XTS 3000 ASTRO Digital Radio Basic Service Manual RSS and CPS Procedures

Use the following procedure for initial setup using an R-2670 Communication Analyzer.

Procedure 7-11 Initial Setup Using the R-2670 Communication Analyzer

Use the following procedure for initial setup using an 8901B Modulation Analyzer.

Procedure 7-12 Initial setup using the 8901B Modulation Analyzer

Connect a BNC cable between the DEMOD OUT port and the VERT/SINAD DIST/DMM COUNTER IN port of the R-2670.

Press the SPF key on the R-2670 to display the SPECIAL FU N CTIO NS menu. Move the cursor to High Pass, and select 5Hzvia the soft key menu. Select 20 kHz for the Low Pass setting.

In the RF Control section of the R-2670 enter the frequency displayed on the RSS screen (choose a test frequency from the list of frequencies displayed under TRANSMIT DEVIATION LIMIT screen in RSS). Move the cursor to the B/W setting and select WIDE +/- 100 kHz via the soft key menu.

Place the R-2670 cursor in the Display zone. Move the cursor to the Meter setting and select AC VOLTS via the soft key menu. Move the cursor to the Range setting and select AUTO.

Press the FM Measurement button. (Error 03-input level too low. This indication is normal until an input signal is applied).

Simultaneously press the Peak – and Peak + buttons. Both LEDs on the buttons should be lit.

Press the 15 KHz LP filter button

Continue with RSS or CPS procedure below.

7.5.1 RSS and CPS Procedures

Follow the procedure below for using RSS.

Procedure 7-13 Procedure Using RSS

From the TRANSMITTER ALIGNMENT menu press F5 to select the TRANSMIT DEVIATION LIMIT alignment screen.

Press Ta b to select and to start alignment at the lowest frequency listed.

Press F6 and observe the measurement. Wait approximately 5 second s until the deviation (8901B)/voltage (R2670) displayed settles.

Adjust the deviation limit to within 0.158 to 0.163 VAC on the R-2670 (2.785 to

2.885 kHz on the 8901B). The optimum setting is 0.160 VAC (2.83 kHz).

Press F6 to dekey the radio.

Press F8 to program the new softpot value.

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RSS and CPS Procedures Chapter 7: ALIGNME NT PROCE DURE

Procedure 7-13 Procedure Using RSS (Continued)

Repeat steps 2-6 for the remaining frequencies. Note – test frequency #7 (ex

519.9750 MHz for UHF Range 2) is not normally used and therefore does not require alignment.

If the transmit limit adjustment required w as excessive, repeat or recheck the transmit deviation balance compensation procedure.

Press Escape buttontoreturntoMAINmenu.

Follow the procedure below for using CPS.

Procedure 7-14 Procedure Using CPS

Double-click to select the TX DEVIATION LIMIT under the TRANSMITTER ALIGNMENT menu. The screen will indicate the transm it frequencies to be used.

Select the desired frequency field (starting with the lowest frequency shown on the top of the screen).

Select the PTT toggle button on the screen to make the radio transmit. The screen indicates wh ether the radio is transm itt ing . Wait approximately 5 seconds until the deviation/voltage displayed on the analyzer settles.

Adjust the deviation limit to within 0.158 to 0.163 VAC on the R-2670 (2.785 to

2.885 kHz). The optimum setting is 0.160 VAC (2..83 kHz).

Select the PTT tog gle button on the screen to stop transmitting.

Select the Program button on the screen to save the tuned values. Repeat steps 3-5 t o ensure the correct deviation limit value is saved.

Repeat steps 2-6 for the remaining frequencies.

Test frequency #7 (ex 519.9750 MHz for UHF Range 2) is not normally used and therefor

e does not req uire alignment.

If the transmit limit adjustment required w as excessive, repeat or recheck the transmit deviation balance compensation procedure.

Select the Close button on the screen to return to the TRANSMITTER ALIGNMENT

S menu.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Front End Filter Alignment (VHF and UHF only)

7.6 Front End Filter Alignment (VHF and UHF only)

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This procedure is only required for tuning the front-end filter varactors in the VHF and UHF models. The 800 MHz models utilize a fixed front-end filter.

• IMPORTANT notes for proper Front End Filter alignment:

◦ XTS 3000 VHF (H09Kxxxxxxxx) radios equipped with transceiver board

NLD8898K or later version has softpot tuning range of 128 – 255. Us e only softpot values between 128 and 255 to perform Front End Filter alignment for all test frequencies identified in the Front End Filter alignment screen in RSS or CPS tuner. Doing otherwise will cause poor sensitivity performance when the radio is deployed in the field.

◦ Whenever a contro ller board of a XTS 3000 VHF (H09Kxxxxxxxx) radio is

replaced it is necessary to identify the transceiver board version for proper Front End Filter alignment. It is recommended that the version of the transceiver board be identified before reassemble the r adio.

Use the following procedure to identify transceiver board version.

Procedure 7-15 How to Identify Transceiver Board Version

Use RSS or CPS Tuner and select RECEIVER ALIGNMENTS menu. Select Front End Filter alignment. The screen will indicate the receive frequencies at which

the filter is to be aligned.

Set the RF test generator to the first receive frequency. Set the RF level at the radio standard antenna port to 4.0 Volts with no modulation.

Starting at a softpot value of 0, adjust UP until peak value of RSSI is found

Read RSSI button (CPS) / F4 (RSS) must be selected to obtain each RSSI reading after adjustment, write down the peak value of RSSI.

Go to a softpot value of 128 and adjust UP to see if another RSSI peak value for the same frequency is found.

If a new peak value that is close to a peak value found in previous step is foun d, the radio is equipped with revision NLD8898K or new er transceiver board.

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If no new peak value that is close to a peak value found in p revious step is found, the radio is equipped with revision NLD8898H or older transceiver board.

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RSS and CPS Procedures Chapter 7: ALIGNME NT PROCE DURE

7.6.1 RSS and CPS Procedures

Continue with RSS or CPS procedure below.

Use the following R SS procedure when applicable.

Procedure 7-16 Procedure Using RSS

From the SERVICE menu, press F3 to select the RECEIVER ALIGNMENT menu.

Press F2 to select the FRONT END FILTER ALIGNMENT screen. The screen will indicate the receive frequencies at which the filter is to be aligned.

Press Ta b key (or Enter or Return) to select a frequency field.

Set the RF test generator to the first receive frequency. Set the RF level at the radio standard antenna port to 4.0uV with no modulation.

Adjust the Up/Down arrow keys to obtain a peak value in the RSSI (Receive Signal Strength Indicator) field.

F4 must be pressed to obtain each RSSI reading after adjustment.

Adjust the Down arrow key until the RSSI peak value drops 5 points and reco rd the softpot value. If the softpot value reaches its tuning range limit, record that softpot value.

Adjust the Up arrow key until the RSSI peak value drops 5 points and record the softpot value. If the softpot value reaches its tuning range limit, record that softpot value.

Set the sofpot value midway between the softpot values recorded in step 6 and step 7.

Use the following C PS procedure when applicable.

Procedure 7-17 Procedure Using CPS

7-14 68P810

Press F8 to program the new softpot value.

Repeat steps 3-9 for the remaining frequencies.

Press F10 once to return to the RECEIVER ALIGNMENT menu, or press F10 twicetoreturntotheSERVICEmenu.

Under the RECEIVER ALIGNMENTS menu, select FRONT END FILTER. The screen will indicate the receive frequencies at which the filter is to be aligned.

Select a frequency field (starting with the lowest frequency shown).

Set RF test generator to the first receive frequency. Set the RF level at the radio standard antenna port to 4.0uV with no modulation.

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XTS 3000 ASTRO Digital Radio Basic Service Manual RSS and CPS Procedures

Procedure 7-17 Procedure Using CPS (Continued)

Adjust the Up/Down arrow keys under New Softpot Value window to obtain a peak value in the RSSI (Receive Signal Strength Indicator) field.

Read RSSI button must be selected to obtain each RSSI reading after adjustment.

Adjust the Down arrow key until the RSSI peak value drops 5 points and record the softpot value. If the softpot value reaches its tuning range limit, record that softpot value.

Adjust the Up arrow key until the RSSI peak value drops 5 points and record the softpot value. If the softpot value reaches its tuning range limit, record that softpot value.

Set th e sofpot value midway between the softpot values recorded in step 5 and step 6.

Select Program button to program the new softpot value.

Repeat steps 2-8 for the remaining frequencies.

Select the Close button to return to the RECEIVER ALIGNMENTS menu.

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Bit Error Rate Testing Chapter 7: ALIGNME NT PROCE DURE

7.7 Bit Error Rate Testing

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Use the following procedure for initial setup using an R-2670 Communication Analyzer.

Procedure 7-18 R2670 (Communication Analyzer) Setup

Connect the RF Input port of the radio under test to the RF IN/OUT port of the R2670 Service Monitor.

Setup for R2670 Service Monitor:

1. In the Display Zone, select PROJ 25 STD mode and set the meter to RF DISPLAY.

2. IntheRFZoneconfiguretheanalyzerasfollows:

RF control: Generate Preset: B/W: NB Freq: Test frequency (ex: 851.0625 MHz) Output Level -50.0 dBm Gen RF Out RF I/O

3. In the Aud io Zone, select the 10 11 Hz PAT code and set the deviation to PROJ25Dev: 2.83 kHz ~.

Use the following R SS procedure when applicable.

Procedure 7-19 Procedure Using RSS

Configure the radio under test to the BER Test mode - this can be done through RSS as follows:

1. FromtheMAINMenuinRSS,pressF2 to select SERVICE ALIGNMENT.

2. Press F5 to select PERFORMANCE TESTING.

3. Press F2 to select BIT ERROR RATE. Enter the test frequency in the Rx

Frequency (MHz) field (ex. 851.0625MHz) and select de

sired Modulation type

as 12.5kHz/C4 FM . Set BER Integration Time (sec) to minimum of 7.2 sec.

4. Press F6 (START/STOP) to start the test.

Monitor the radio’s received BER(%). Reduce the analyzer’s output level to achieve standard Bit Error Rate of 5%. Reference

sensitivity is the analyzer ’s RF output level. Reference sensitivity at 5% Bit Error Rate should be –116 dBm or less. Note that 5% BER is equivalent to 12 dB Sinad.

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Chapter

Basic Removal/Installation Procedures

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This section gives basic procedures for removing and installing the follow ing XTS 3000 radio components:

• "Antenna"

• "Battery"

• "Belt Clip"

• "Universal Connector Cover"

• "Frequency Knob"

• "Volume Knob"

8.1 Antenna

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The following sections explain installation and removal o f the antenna.

8.1.1 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.

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8.1.2 Removing the Antenna

Rotate the antenna counterclockwise until its threaded end unscrews from the radio’s antenna receptacle.

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Battery Chapter 8: Basic Removal/Installation Procedures

8.2 Battery

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The battery is shipped uncharged, and must be charged 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.

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.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Installing the Battery

8.2.1 Installing the Battery

Use the following procedure to install the battery.

Procedure 8-1 Battery Installation

Turn off the radio and hold it with the back of the radio facing upward.

Insert the top edge of the battery in to the area at the top of the radio between the radio’s case and chassis. Make sure the three tabs on th e radio chassis align with the three slots under the top edge of the battery.

Rotate the battery toward the radio, and squeeze the battery and radio together until the battery clicks in place.

8.2.2 Removing the Battery

Use the following procedure to remove the battery.

Procedure 8-2 Battery Removal

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Turn off the radio and hold it so that the release button on the bottom of the

ry is facing upward.

batte

ss downward on the release button so the battery disengages from the radio.

Pre

Remove the battery completely away from the radio.

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Belt Clip Chapter 8: Basic Removal/Installation Procedures

8.3 Belt Clip

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This section describes how to install and remove the belt clip.

The battery must be removed from the radio before the belt clip can be installed or removed.

8.3.1 Installing the Belt Clip

Use the following procedure to install the belt clip.

Procedure 8-3 Belt Clip Attachment

Hold the battery in one hand so that the top of the battery faces upward, and the back of the battery faces you.

Holding the belt clip in the other han d with its top facing upward, align the slide assembly on the front of the belt clip with the slots on the back of the bat tery.

Slide the belt clip downward toward the bottom of the battery until the belt clip “clicks” in place.

Slide

Assembly

Belt Clip

Slots

Battery

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XTS 3000 ASTRO Digital Radio Basic Service Manual Removing the Belt Clip

8.3.2 Removing the Belt Clip

Use the following procedure to remove the belt clip.

Procedure 8-4 Belt Clip Removal

Hold the battery (with belt clip installed) in one hand so that the top of the battery faces upw ard, and the front (radio side) of the battery faces you.

Atthetopofthebattery,pressdownonthe belt clip’s metal tab and slide the belt clip upward until it disengages from the battery.

Continue to slide the belt clip upward until it is free from the battery.

Press Down

Metal

Tab

8.4 Universal Connector Cover

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

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Installing the Universal Connector Cover Chapter 8: Basic R emoval/Installation Procedures

8.4.1 Installing the Universal Connector Cover

Use the following procedure to install the universal connector cover.

Procedure 8-5 Universal Connector Cover Installation

Looking at the antenna side of the radio, insert the top (flat) h ooked 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.

While holding the cover’s top (flat) end in place with your thumbs, pry upward on the cover’s lower end until it disengages from the radio.

To p

Hooked End

Bottom

Hooked End

To p

Slot

Bottom

Slot

8.4.2 Removing the Universal Connector Cover

Use the following procedure to remove the universal co nnector cover.

Procedure 8-6 Universal Connector Cover Removal

Looking at the antenna side of the radio, insert a flat-bladed screwdriver into the area betw een the lower end of the universal connector cover and the slot below the universal connector.

Pry upward on the cover’s lower end until it disengages from the radio.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Frequency Knob

8.5 Frequency Knob

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Refer to Figure 8-1, the Partial Exploded View, and Ta ble 8-1, the Partial Exploded View Parts List. Numbers in parentheses ( ) refer to item numbers in Figure 8-1 and Table 8-1 .

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

removing the frequency knob (1).

• In cases where the frequency insert (3) and escutcheon (2) must be removed, a new

frequency insert and new escutcheon must be used for reassembly.

8.5.1 Installing the Frequency Knob

Use the following procedure to install the frequency knob.

Procedure 8-7 Frequency Knob Installation

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

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.

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.

If you are replacing the escutch eon (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.

Place a new frequency insert (3) and new 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.

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.

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Removing the Frequency Knob Chapter 8: Basic Removal/Installation Procedures

8.5.2 Removing the Frequency Knob

Use the following procedure to remove t he frequency knob.

Procedure 8-8 Frequency Knob Removal

Hold the radio in one hand so that the top of the radio faces upward, and the front of the radio faces you.

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).

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.

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

8.6VolumeKnob

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8-8

• Refer to Figure 8-1, the Partial Explode

dView,andTab le 8-1 , the Partial Exploded View Parts

List. Numbers in parentheses ( ) refer to item numbers in Figure 8-1 and Tab le 8-1.

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

removing the v

olume knob (8).

• In cases where the volume insert (9) must be removed, a new volume insert

must be used for reassembly.

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XTS 3000 ASTRO Digital Radio Basic Service Manual Installing the Volume Knob

8.6.1 Installing the Volume Knob

Use the following pro cedure to install the volume knob.

Procedure 8-9 Volume Knob Ins ta llation

Place the O-ring (21) inside the volume insert (9), and press it downward until it seats securely at the bottom of the insert.

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

Place a new volume insert (9) on the v olume 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.

Place the volume knob (8) on the volume insert (9), aligning the two lugs on the insideoftheknobwiththeinsert’stwosnaptabs. Pressfirmlydownwardonthe knob until it seats securely in place.

8.6.2 Removing the Volume Knob

Use the following procedure to remove the volume knob.

Procedure 8-10 Volume Knob Removal

Hold the radio in one hand so that the top of the radio faces upward, and the front of the radio faces you.

With the other hand, grasp the volume knob (8) and pull it upward, while pushing it toward the back of t

he radio, until it is free from the volume insert (9).

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While pressing the control shaft so that the insert disengagesfromtheshaft,useneedle-nosed pliers to pull the insert up and off of the volume control shaft.

Using needle-nosed pliers or some o ther pointed instrument, remove the O-ring (21).

volume insert’s (9) two snap tabs away from the volum e

8-9

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Partial Exploded View and Parts List Chapter 8: Basic Removal/Installation Procedures

8.7 Partial Exploded View and Parts List

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Figure 8-1 Partial Ex plod ed View

Alignment Marker

Alignment Notch

XTS 3000

HOME

DEF

GHI

PRS

ABC

MNO

JKL

WXY

TUV

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XTS 3000 ASTRO Digital Radio Basic Service Manual Partial Exploded View and Parts List

A parts list for the Partial Exploded View is contained below.

Tabl e 8- 1 Partial Exploded View Parts List

Item

No.

Motorola Part No. Description

1 360 537 0Z01 KNOB, Frequency

2 130 537 4Z03 ESCUTCHEON, Frequency

3 430 537 3Z02

INSERT RETAINER, Frequency Knob

4 430 537 5Z01 LEVER, Secure Frequency

6 NTN8266A

8 360 537 1Z01

9 430 537 2Z01

10 3305574Z01

6105376Z01

NTN8298A

----------

LIGHTPIPE INDICATOR/STOP, Frequency

CLIP, Belt

Battery, NiCd

KNOB, Volume

INSERT RETAINER, Volume Knob

LABEL, Motorola, Back

LABEL, Flashport

LABEL, Radio Serial Number

LABEL, Approval Agency

14 3305630Z02 LABEL, Bottom

15 NAF5037A

or NAF5039 A or NAF5042A

ANTENNA, 800 MHz Whip (806-870 MHz) ANTENNA, 800 MHz Dipole (806-870 MHz) ANTENNA, 800 MHz Stubby Quarterwave (806-870 MHz)

16 3385657D01

3385657D02

LABEL, ABC, Black H ousin g (optional — need if housing is not pad printed.)LABEL, ABC, Yellow Housing (optional — need if housing is not pad printed.)

17 3385658D01

3385658D02

LABEL, Toggle, Black Housing (optional — need if housing is not pad printed) LABEL, Toggle, Yellow Housing (optional — need if housing is not pad printed)

18 1505579Z01

19 3385619B01

3385619B02 3385619B03

COVER, Dust, Universal Connector

LABEL, Motorola, Front (Standard) LABEL, Motorola, Front (Ruggedized) LABEL, Moto ro la, Front (Rug gedized, Yellow)

20 3505586Z01 Gortex

21 3205379W01

O-Ring

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Theory of Operation

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9.1 General Overview

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Chapter

■

The ASTRO Digital XTS 3000 radio is a wideband, synthesized, fixed-tuned radio available in the 800 MHz band. All ASTRO Digital XTS 3000 radios are capable of both analog operation and ASTRO mode (digital) operation in 12.5 kHz or 25 kHz bandwidths.

The ASTRO Digital XTS 3000 radio includes the following major assemblies:

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

management integrated circuit (IC), the audio power amplifier, and a switching regulator.

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

the digital receiver back-end IC and the reference oscillator.

• Vocoder Board - contains the digital signal processor (DSP) and its support

IC and associated memories.

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

push-to-talk (PTT) button, monitor button, several function-selectable switches, universal connector, speaker, and microphone.

• Display (Models II and III only) - a four-line, 12-character liquid crystal display (LCD).

• Keypad (Models II and III only) - Model II — a 3x2 keypad; Model III — a 3 x 6 keypad.

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Analog Mode of Operation Chapter 9: Theory of Operation

9.2 Analog Mode of Operation

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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 450 kHz. 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 vocoder board through a current-driven differential output.

On the vocoder bo ard , the digital- signal-processor-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 DSP-support IC for conv ersion to an analog signal. The DSP-support IC will then present the signal to the aud io power amplifier, which d riv e s 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 from the audio power amplifier (PA) to the DSP-support IC, where the signal is digitized. The DSP-support IC passes digital data to the DSP, where pre-emphasis and lowpass (splatter) filtering ar e done. The DSP returns this signal to the DSP-support IC, 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 DSP-support IC, 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.

9.3 ASTRO Mode of Operation

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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.

■

9-2

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 t he inform ation. This algorithm will result in deviation levels that are limited to discrete levels.

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XTS 3000 ASTRO Digital Radio Basic Service Manual RF Board Basic Theory of Operation

9.4 RF Board Basic Theory of Operation

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The receiver front end consists of a pre-selector, an RF amplifier, a second preselector, and a mixer. Both preselectors in the VHF and UHF radios are varactor-tuned, two-pole filters, controlled by the microcontroller unit through the digital/analog (D/A) IC. In the 800 MHz front end, both pre-selectors are two-pole, fixed-tuned filters. 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 Tab le 9 -1 for local oscillator (LO) and first IF information.

Tabl e 9-1 Local Oscillator and First IF Frequencies

VHF UHF 800 MHz

LO Freque ncy Range 181.15–223.15 MHz 329.65–446.65 MHz 732.65–796.65

MHz

First IF Frequency

45.15 MHz 73.35 MHz 73.35 MHz

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 VCO IC. The VCO 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 contro lled by th e 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.

he 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 5 kHz modulation. Final IF filtering is done digitally in the DSP-support IC.

The digital back-end IC consists of an amplifier, the second mixer, an IF analog-to-digital converter, a baseband down-converter, and a 2.4 MHz synthesis circuit to provide a clock to the DSP-support IC on the vocoder 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 PA IC that gets an injection signal from the VCO. Transmit power is controlled by two custom ICs that monitor the output of a directional coupler and adjust 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.

9.5 Controller Board Basic Theory of Operation

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The controller board contains the radio’s microcontrol unit with its memory and support circuits, voltage regulators, audio, and power control circuits. Connected to the controller b oard are the display board, RF board, vocoder board, keypad board, controls/universal flex, and (optional) en cryption module.

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Vocoder B oard Basic Theory of Operation Chapter 9: Theory of Operation

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 t he 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 support-logic IC acts as an extension of the microcontrol unit by providing logic functions such as lower address latch, reset, memory address decoding, and additional control lines for the r adio. The microcontrol unit controls the crystal-pull circuit to adjust the crystal oscillator’s frequency on the microcontrol unit, so that the E-clock’s harmonics do not cause interference with the radio’s receive channel.

The regulator and power-control circuits include an unswitched +5V discrete circuit and the regulator/power-control IC. Switched +5V is used for all circuits on the controller board except the audio PA, which is sourced from 7.5V. The regulator automatically provides 5V when the radio is turned on. The regulator’s power-down mode is controlled by the microcontrol unit, which senses the position of the on/off switch.

9.6 Vocoder Board Basic Theory of Operation

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The vocoder board contains the digital-signal processor (DSP), its memory dev ices, and the DSP-support IC.

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 33 MHz crystal to fu nction. An 8 kHz interrupt signal generated by the DSP-support IC is also required for functionality. It is p rog ram med using parallel programming from the microcontrol unit and the DSP-support IC.

The DSP-support IC p erf orms analog-to-digital and digital-to-analog conversions on audio s ignals. It contains attenuators for volume, squelch, deviation, and compensation, and it executes receiver filtering and discrimination. The IC requires a 2.4 MHz clock to fun c tion (generated by the digital back-end IC) and is programmed by the microcontrol unit SPI bus.

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Troubleshooting

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This section of the manual contains troubleshooting charts and error codes that will help you to isolate a problem. Level one troubleshooting will support only radio alignment, program m ing, battery replacem ent, and knob replacement. If the radio needs further troubleshooting, it must be sent to the depot.

Board- and component-level and service information can be found in the “ASTRO Digital XTS 3000 Portable Radios Detail ed Service Manual,” Motorola pub lication number 68P81083C90.

Chapter

■

10.1 Power-Up Error Codes

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When the radio is turned on (power-up), the radio performs cursory tests to determine if its basic electronics and software are in working order. Problems detected during these tests are presented as error codes on the radio’s display. The presence of an error should prompt the user that a problem exists and that a service technician should be contacted.

Self-test e rrors are classified as either fatal or non-fatal. Fatal errors will inhibit user operation; non-fatal errors will not. Use Table 14 to aid in understanding p articular power-up error code displays.

Tabl e 10-1 Power-Up Error Code Descriptions

Error Code

01/02 External EEPROM Checksum Non-Fatal Error Reprogram codeplug.

01/81 ROM Checksum Failure Sendradiotodepot.

01/82 External EEPROM Checksum Failure Reprogram the codeplug.

01/84 SLIC Initialization Failure Turn the radio off, then on.

01/88 RAM Failure - Note: not a checksum failure Turn the radio off, then on.

Description

■

Corrective Action

68P81083C8

01/90 General Hardware Failure Turn the radio off, then on.

01/92 Internal EEPROM Checksum Failure Reprogram the codeplug.

02/10 DSP support IC checksum Non-Fatal Error Turn the radio off, then on.

02/81 DSP ROM Checksum Failure Sendradiotodepot.

02/88 DSP RAM Failure - Note: not a checksum failure Turn the radio off, then on.

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Operational Error Codes Chapter 10: Troubleshooting

Tab l e 10-1 Power-Up Error Code Descriptions (Continued)

Error

Code

02/90 General DSP Hardware Failure (DSP startup

Description

Turn the radio off, then on.

message not received correctly)

02/A0 ADSIC C hecksu m Failure - Non-Fatal Error Turn the radio off, then on.

09/10 Secure Hardware Failure Send radio to depot.

09/90 Secure Hardware Failure Send radio to depot.

If the correctiv e action does not fix the failure, send the radio to the depot.

10.2 Operational Error Codes

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Corrective Action

■

During radio operation, the radio performs dynamic tests to determine if the radio is working properly. Problems detected during these tests are presented as error codes on the radio’s display. The presence of an error code should prompt a user that a problem exists and that a service technician should be contacted. Use Tab le 1 0-2 to aid in understanding particular operational error codes.

Tab l e 10-2 Operational Error Code Displays

Error Code

FAIL 001

Synthesizer Out-of-Lock a. Reprogram co deplug

Description

Corrective Action

b. Send radio to depot

FAIL 002

Selected Mode/Zone Codeplug Checksum

Reprogram codeplug

Error

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XTS 3000 ASTRO Digital Radio Basic Service Manual Operational Error Codes

Below is the Receiver Troubleshooting Chart.

Table 10-3 Receiver Troubleshooting Chart

Symptom Possible Cause

Radio Dead; Display Does Not Light Up

1. Dead Battery Replace with charged battery.

2. Blown Fuse

3. On/Off Switch

4. Regulators

1. Controller BoardRadio Dead; Display

Lights Up

No Receiver Audio

2. RF Board

Programming a. Does the transmitted signal match the or Receiver Does Not Unmute

Audio Distorted or Not Loud Enough

RF Sensitivity Poor

Synthesizer Not On

Frequency

1. Synthesizer Not On

Frequency

2. Antenna Switch Sendradiotodepot.

3. Receiver Front- End

Tuning (VHF/ UHF

only)

Correction or Test (Measurements

Taken at Room Temperature)

Sendradiotodepot.

receiver configuration (PL, DPL, etc.) b. With the monitor f unction enabled, can the radio be unmuted?

Check synthesizer frequency by measuring the transmitter frequency; if off by more than ±250 Hz, realign.

Check synthesizer frequency by measuring the transmitter frequency; if off by more than £ ±600 Hz, realign.

Check RF front-end tuning for optimum sensitivity using the RSS.

Radio Will Not Turn Off Controller Board Sendradiotodepot.

Below is the Transmitter Troubleshooting Chart.

Tabl e 10-4 Transmitter Troubleshooting Chart

Symptom Possible Cause

No R F Power O ut

1. TX Power Level or Frequency

2. No PTT From Control

Correction or Test (Measurements

Taken at Room Temperature)

Check TX power level and frequency programming (from RSS).

Sendradiotodepot.

Top

3. No Injection To Power Amplifier

No Modulation; Distorted Mod ulation

1. Programming Check deviation and compensation settings using the RSS.

2. Controller Board Sendradiotodepot.

Bad Microphone Sensitivity

1. Check Deviation and

Compensation

Realign if necessary.

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Operational Error Codes Chapter 10: Troubleshooting

Tab l e 10-4 Transmitter Troubleshooting Chart (Continued)

Symptom Possible Cause

Correction or Test (Measurements

Taken at Room Temperature)

2. Microphone Send radio to depot.

1. Programming Check ProgrammingNo/Low Signalling (PL,

DPL, MDC)

2. Controller Board Send radio to depot.

Can’t Set Compensation RF Board Send radio to depot.

Below is the Encryption Troubleshooting Chart.

Tab l e 10-5 Encryption Troubleshooting Chart

Symptom Possible Cause Corrective Action

No “ KEYLOAD” on Radio Display When Keyloading Cable is Attached to the Radio Side Connector

Keyloader Displays “ FAIL.”

1. Defective Keyload

Send radio to depot.

Cable

2. Defective Radio

1. Wrong Keyloader Make Sure the Keyloader is a “T----CX” or “T----DX” Keyloader.

2. Bad Keyloader Try Another Keyloader

3. Defective Radio Send radio to depot.

Keyloaders “T----AX” and “T----BX” must be upgraded to “T----CX” and “T----DX” in order to keyload an XTS 3000 radio.

10-4

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Glossary

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A/D — Analog to Digital converter; converts an instantaneous dc voltage level to a corresponding digital value.

Abacus IC — Custom integrated circuit providing a digital receiver IF backend.

ADSIC — ABACUS/DSP Support IC; custom integrated circuit providing

peripheral functions for the DSP.

ALC — Automatic Level Control; a circuit in the transmit RF path that controls RF power amplifier output, provides leveling over frequency and voltage, and protects against high VSWR.

D/A — Digital to Analog converter; converts a digital value to a corresponding dc voltage value.

Glossary

■

DTMF — Dual Tone Multi-Frequency

DPL — Digital Private-Line™

DSP — Digital Signal Processor; microcontroller specifically tailored for signal processing

computations. In this case refers specifically to Motorola DSP56001.

Firmware — Software or a software/hardware combination of computer programs and data, with a fixed logic con figuratio n stored in a read-only memory; information can not be altered or reprogrammed.

FGU — Frequency Generation Unit

FLASHPort™ — A Motorola term that describes the ability of a radio to change

memory. Every FLASHport radio contains a FLASHport EEPROM memory chip that can be software written and rewritten to, again and again.

Host — Motorola HC11F1 microcontrol unit U204 (see MCU).

Host Port — Parallel memory mapped interface consisting of eight registers in the DSP56001.

IC — Integrated Circuit

IMBE — A sub-band, voice encoding algorithm used in ASTRO digital voice.

ISW — Inbound Signalling Word; data transmitted on the control channel from

a subscriber unit to the central control unit.

LSH — Low Speed Handshake; 150 baud digital data sent to the radio during trunked operation while receiving audio.

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MCU — MicroControl Unit

MDC — Motorola Digital Communications

MISO — Master In Slave Out; used by the slave device to send data to the master device.

MOSI — Master Out Slave In; used by the master device to send data to the slave device.

OMPAC — Over-Molded Pad-Array Carrier; a Motorola custom IC package,

distinguished by the presence of solder balls on the bottom pads.

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Glossary

Open Architecture — A controller configuration that utilizes a micropro cessor with extended ROM, RAM, and EEPROM.

OSW — Outbound Signalling Word; data transmitted on the control channel from the central controller to the subscriber unit.

PC Board — Printed Circuit board

PL — Private-Line® tone squelch; a continuous sub-audible tone that is

transmitted along with the carrier.

PLL — Phase-Locked Loop; a circuit in which an oscillator is kept in phase with a reference, usually after passing through a frequency divider.

PTT — Push-To-Talk; the switch located on the left side of the radio which, when pressed, causes the radio to transmit.

Registers — Short-term data-storage circuits within the microcontrol unit or programmable logic IC.

Repeater — Remote transmit/receive facility that re-transmits received signals in order to improve communications coverag e.

RESET — Reset line; an input to the microcontroller that restarts execution.

RF PA — Radio Frequency Power Amplifier

RSS — Radio Service Software

RPT/TA — RePeaTer/Talk-Around

RX DATA — Recovered digital data line.

Signal Qualifier Mode — An operating mode whereby the radio is m uted but still

continues to analyze receive data to determine RX signal type.

SCI IN — Serial Communication Interface INput line.

SLIC — Support-Logic IC; a custom gate array used to provide I/O and

memory expansion for the microcontroller.

Softpot — Software potentiometer; a computer-adjustable electronic attenuator.

Software — Computer programs, procedures, rules, documentation, and data

pertaining to the oper a tio n of a system.

SPI — Serial Peripheral Interface; how the microcontroller communicates to modules and ICs through the CLOCK and DATA l ines.

Squelch — Muting of audio circuits when received signal levels fall below a predeterm ined value.

SRAM — Static-RAM chip used for volatile, program/data memory.

SSI — Synchronous Serial Interface on the DSP56001 consistin g of six signals and

used for an RX and TX modulated data interface to the ADSIC.

GL-2

Standby Mode — An operating mode whereby the radio is muted but still continues to monitor data.

System Central Controllers — Main control unit of the trunked dispatch system; handles ISW and OSW messages to and from subscriber units (see ISW and OSW).

System Select — The act of selecting the desired operating system with the system-select switch (also, the name given to this switch).

TOT — Time-Out Timer; a timer that limits the length of a transmission.

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Glossary

TSOP — Thin Small-Outline Package

UART — Universal Asynchronous Receiver Transmitter. VOCON VOcoder/CONtroller board

µC — Microcontrol unit (see MCU).

VCO — Voltage-Controlled Oscillator; an oscillator whereby the frequency of

oscillation can be varied by changing a control voltage.

VCOB IC — Voltage-Controlled Oscillator Buffer IC

Vocoder — VOice enCODER; the DSP-based system for digitally processing

the analog signals, includes the capabilities of performing voice compression algorithms or voice encoding.

VSELP — Vector Sum Excited Linear Predictive coding; a voice encoding technique used in ASTRO d igital voice.

VSWR — Voltage Standing Wave Ratio

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Glossary

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GL-4 68P810

83C85-A March 2004

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Index

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■

Index

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alignmentmarker................ 8-7

alignmentnotch................ 8-7

ASTROmode................. 9-2

audiopoweramplifier ............. 9-1

analog..................... 9-1

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carriersquelch(CSQ).............. 6-4

codeplug.................... 7-3

controllerboard ................ 9-3

ControllerBoard................ 9-1

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digitalsignalprocessor(DSP).......... 9-1

digital-signal processo r (DSP) . . . . . . . . 9-2, 9-4

digital-to-analog(D/A)............. 7-3

DSP-supportIC ............. 9-3to9-4

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Elastomer................... 4-3

electrostaticdischarge(ESD).......... 4-3

escutcheon................... 8-7

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frequencycontrolshaft............. 8-7

frequency generation circuitry . . . . . . . . . . 9-1

frequencyinsert................ 8-7

frequencyknob.............. 8-7to8-8

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IBMpersonalcomputer(PC).......... 7-1 intermediatefrequency(IF)........... 9-2

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lightpipe................. 8-7to8-8 localoscillator(LO).............. 9-3

68P81083C8

5-A March 2004

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Index

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maintenance

basic.................... 4-1

inspection................. 4-1

handling precautions . . . . . . . . . . . . . 4-2

preventive.................. 4-1

cleaning.................. 4-1

memory management integrated circuit (IC) . . . 9-1

memory management integrated circuit (IC) (contd.)

RSS..................... 9-1

microcomputer............... 6-3,7-3

microcontrolunit.............. 9-2,9-4

microcontrolunit(MCU)............ 9-1

Mode/ZoneSelectorSwitch........... 6-5

MotorolaPartsDivision............. 5-2

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poweramplifier(PA).............. 9-2

push-to-talk(PTT)button............ 9-1

PTTSwitch.................. 6-5

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radiointerfacebox(RIB)............ 7-1

radioservicesoftware.............. 7-4

RSS..................... 7-2

radioservicesoftware(RSS).......... 7-1

Radio Service Software User’s Guide . . . . . . 5-3

receive. . . . . . . . . . . . . . . . . . . . . 9-1

receiver muting . . . . . . . . . . . . . . . . 6-3

referenceoscillator........ 7-3to7-4,9-1,9-3

RFboard.................... 9-1

RFchannelselection.............. 6-3

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securelever.................. 8-7

serviceaids .................. 5-2

sidebutton1.................. 6-5

sidebutton2................ 6-3,6-5

sidebutton3................ 6-3,6-5

softpot..................... 7-3

submersiontime................ 4-3

switchingregulator............... 9-1

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test

equipment.................. 5-1

field ................... 5-3

testmode ................... 6-3

three-position pr og rammable switch . . . . . . . 6-5

TonePrivate-Line ............... 6-4

topprogrammablebutton............ 6-5

transmit.................... 9-1

transmitterkey-up............... 6-3

two-position concentric switch . . . . . . . . . 6-5

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universalflex ................. 9-1 universaltestset................ 7-1

IX-2

68P81083C85-

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XTS 3000 ASTRO Digital Radio Basic Service Manual Index

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VCOIC.................... 9-3

vocoderboard.............. 9-3to9-4

Vocoderboard................. 9-1

vocolerboard ................. 9-2

voltage-controlled oscillator (VCO) . . . . . . . 9-2

volumecontrol................. 6-5

volumecontrolshaft.............. 8-9

volumeinsert .............. 8-8to8-9

volumeknob............... 8-8to8-9

68P81083C85-A Mar

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Motorola, Inc. 8000 West Sunrise Boulevard Ft. Lauderdale, FL 33322

MOTOROLA, the Stylized M Logo, and ASTRO are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2004. All rights reserved. Printed in U.S.A.

*6881083C85*

6881083C85-A