T L Parker RDX-U2 Mobile Transmitter User Manual Portable manual

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Document ID	282019
Application ID	00BD2XTyQQyMUHVWmTGq5g==
Document Description	Portable manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	68.09kB (851150 bits)
Date Submitted	2002-11-07 00:00:00
Date Available	2003-02-10 00:00:00
Creation Date	1996-08-14 15:23:28
Producing Software	Acrobat Distiller 2.0 for Power Macintosh
Document Lastmod	1997-07-10 14:51:52
Document Title	83C85-O ASTRO Digital XTS 3000 Portable Radios Basic Service Manual
Document Creator	FrameMaker 5.1.1
Document Author:	Motorola

TM
Digital XTS 3000
Portable Radios
Basic Service Manual
*6881083C85*
68P81083C85-O
Motorola
8000 West Sunrise Boulevard
Fort Lauderdale, Florida 33322
TM
Foreword
This manual covers all models of ASTRO™ Digital XTS 3000™ portable radios, unless otherwise specified. It includes all the
information necessary to maintain peak product performance and maximum working-time using the pass/fail service
approach. This basic level of service is typical of some local service centers, self-maintained customers, and some distributors.
Included in this manual are: radio specifications for the 800MHz frequency band; a general description of ASTRO Digital XTS
3000 models; recommended test equipment, service aids, and tools; radio alignment procedures; fundamental disassembly/
reassembly procedures; and general maintenance recommendations.
For details on the operation of the radio, or board- or component-level troubleshooting, refer to the applicable manuals
available separately. To help you with your selection, a list is provided in this manual, titled “Related Publications.”
Safety Information
In 1991 the Institute of Electrical and Electronics Engineers (IEEE), and in 1992 the American National Standards Institute
(ANSI), updated the 1982 ANSI Standard for safety levels with respect to human exposure to RF energy. Over 120 scientists,
engineers, and physicians from universities, government health agencies, and industry, after reviewing the available body of
research, developed this updated Standard. In March, 1993, the Federal Communications Commission (FCC) proposed the
adoption of this updated Standard.
Motorola subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user
exposure substantially below FCC recommended limits:
•
DO NOT hold the radio with the antenna very close to, or touching, exposed parts of the body, especially
the face, ears, or eyes, while transmitting. Hold the radio in a vertical position with the microphone
two to three inches away from the lips.
•
DO NOT hold the transmit switch (PTT) on when not actually desiring to transmit.
•
DO NOT allow children to play with any radio equipment containing a transmitter.
•
DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere. Under certain conditions,
radios can interfere with blasting operations. When you are in the vicinity of construction work, look for, and observe,
signs cautioning against radio transmissions. If radio transmission is prohibited, you must not transmit until out of the
area. Furthermore, you must turn off your radio to prevent any accidental transmission.
•
DO NOT replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing
batteries and cause an explosion.
•
Turn the radio off when removing or installing a battery.
Anyone intending to use a radio in a hazardous area is advised to become familiar with the subject of intrinsic safety and with
Section 70 of the National Fire Code, which is commonly referred to as Article 500 of the National Electric Code. Use of
anything but factory supplied components may affect the approval and safety of the radio. Likewise, it is advised that servicing
should be performed only by qualified personnel who adhere to the following Factory Mutual (FM) required warning:
Modification of FM approved intrinsically safe radios will negate Factory Mutual Research
Corporation (FMRC) approval.
WARNING
Airbag Warning Statement
VEHICLES EQUIPPED WITH AIR BAGS
WARNING
An air bag inflates with great force. DO NOT place objects, including communication equipment, in the area over
the air bag or in the air bag deployment area. If the communication equipment is improperly installed and the air
bag inflates, this could cause serious injury.
•
Installation of vehicle communication equipment should be performed by a professional installer/technician qualified in
the requirements for such installations. An air bag’s size, shape and deployment area can vary by vehicle make, model and
front compartment configuration (for example, bench seat vs. bucket seats).
•
Contact the vehicle manufacturer’s corporate headquarters, if necessary, for specific air bag information for the vehicle
make, model and front compartment configuration involved in your communication equipment installation.
Manual Revisions
Changes which occur after this manual is printed are described in “FMRs.” These FMRs provide complete information on
changes including pertinent parts listing data.
Table of Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside front cover
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Portable Radio Model Numbering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
SPECIFICATIONS FOR 800MHz RADIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
1 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Notations Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Radio Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FLASHport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 - Basic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 - Recommended Test Equipment and Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Field Programming Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 - Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 - Radio Alignment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Reference Oscillator Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Transmit Power Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Transmit Deviation Balance (Compensation) Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Transmit Deviation Limit Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 - Basic Removal/Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Belt Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Universal Connector Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Frequency Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Volume Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
, Motorola, ASTRO, XTS 3000, Private-Line, and Digital Private-Line are trademarks of Motorola, Inc.
® by Motorola Inc., Radio Products Group
8000 W. Sunrise Blvd., Ft. Lauderdale, FL 33322
Printed in U.S.A. 6/96
Basic Service Manual
68P81083C85-O
7 - Basic Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
General Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Analog Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
ASTRO Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
RF Board Basic Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Controller Board Basic Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Vocoder Board Basic Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8 - Radio-Level Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Introduction to This Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power-Up Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operational Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Replacement Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside back cover
List of Figures
Figure 1. Radio Alignment Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2. RSS Service Menu Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 3. Softpot Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4. Reference Oscillator Alignment Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5. Transmit Power Alignment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 6. Transmit Deviation Balance (Compensation) Alignment Screen . . . . . . . . . . . . . . . . . 17
Figure 7. Transmit Deviation Limit Alignment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 8. Partial Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
List of Tables
Table 1. ASTRO XTS 3000 Basic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table 2. Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3. Service Aids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Initial Equipment Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. Test Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. Test Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 7. Receiver Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 8. Transmitter Performance Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 9. Reference Oscillator Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 10. Transmit Power Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 11. Transmit Deviation Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 12. Partial Exploded View Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 13. Local Oscillator and First IF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 14. Power-Up Error Code Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 15. Operational Error Code Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 16. Receiver Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 17. Transmitter Troubleshooting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 18. Encryption Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Related Publications
ASTRO Digital XTS 3000 Basic Model User’s Guide . . . . . . . . . . . . . . . . . . . . . . . . . . 68P81083C70
ASTRO Digital XTS 3000 Full-Featured Model User’s Guide . . . . . . . . . . . . . . . . . . . . 68P81083C75
ASTRO Digital XTS 3000 Detailed Service Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68P81083C90
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 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 or reproduced in any manner without the express
written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either
directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of
Motorola, except for the normal non-exclusive royalty free license to use that arises by operation of law in the sale of
a product.
ii
Portable Radio
Model Numbering
System
Typical Model Number: H
Position: 1
94
99
Position 1 - Type of Unit
11
12
13
14
15
11
16
Positions 13 - 16
“SP” Model Suffix
D == Hand-Held
Dash-Mounted
Mobile Radio
Portable
M = Motorcycle Mobile Radio
T = Trunk-Mounted Mobile Radio
Position 12 Unique Model Variations
C = Cenelec
N = Standard Package
Positions 2 & 3 - Model Series
0904= =XTS
3000
ASTRO
Position 4 - Frequency Band
A = Less than 29.7MHz
P =
B = 29.7 to 35.99MHz
Q=
C = 36 to 41.99MHz
R=
D = 42 to 50MHz
S =
F = 66 to 80MHz
T =
G = 74 to 90MHz
U=
H = Product Specific
V =
J = 136 to 162MHz
W=
K = 146 to 178MHz
Y =
L = 174 to 210MHz
Z =
M = 190 to 235MHz
10
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
Values given represent range only; they are
not absolute.
Position 5 - Power Level
A = 0 to 0.7 Watts
G = 10.1 to 15 Watts
B = 0.7 to 0.9 Watts H = 16 to 25 Watts
C = 1.0 to 3.9 Watts J = 26 to 35 Watts
D = 4.0 to 5.0 Watts K = 36 to 60 Watts
E = 5.1 to 6.0 Watts L = 61 to 110 Watts
F = 6.1 to 10 Watts
Position 6 - Physical Packages
A = RF Modem Operation
B = Receiver Only
C = Standard Control; No Display
D = Standard Control; With Display
E = Limited Keypad; No Display
F = Limited Keypad; With Display
G = Full Keypad; No Display
H = Full Keypad; With Display
J = Limited Controls; No Display
K = Limited Controls; Basic Display
L = Limited Controls; Limited Display
M = Rotary Controls; Standard Display
N = Enhanced Controls; Enhanced Display
P = Low Profile; No Display
Q = Low Profile; Basic Display
R = Low Profile; Basic Display, Full Keypad
Position 7 - Channel Spacing
1 = 5kHz
5 = 15kHz
2 = 6.25kHz 6 = 20/25kHz
3 = 10kHz
7 = 30kHz
4 = 12.5kHz 9 = Variable/Programmable
Position 11 - Version
Version Letter (Alpha) - Major Change
Position 10 - Feature Level
1 = Basic
6 = Standard Plus
2 = Limited Package 7 = Expanded Package
3 = Limited Plus
8 = Expanded Plus
4 = Intermediate
9 = Full Feature/
5 = Standard Package
Programmable
Position 9 - Primary System Type
A = Conventional
B = Privacy Plus®
C = Clear SMARTNET™
D = Advanced Conventional Stat-Alert™
E = Enhanced Privacy Plus®
F = Nauganet 888 Series
G = Japan Specialized Mobile Radio (JSMR)
H = Multi-Channel Access (MCA)
J = CoveragePLUS™
K = MPT1327* - Public
L = MPT1327* - Private
M = Radiocom
N = Tone Signalling
P = Binary Signalling
Q = Phonenet®
W = Programmable
X = Secure Conventional
Y = Secure SMARTNET™
* MPT = Ministry of Posts and Telecommunications
Position 8 - Primary Operation
A = Conventinal/Simplex
B = Conventional/Duplex
C = Trunked Twin Type
D = Dual Mode Trunked
E = Dual Mode Trunked/Duplex
F = Trunked Type I
G = Trunked Type II
H = FDMA* Digital Dual Mode
J = TDMA** Digital Dual Mode
K = Single Sideband
L = Global Positioning Satellite Capable
M = Amplitude Companded Sideband (ACSB)
P = Programmable
* FDMA = Frequency Division Multiple Access
** TDMA = Time Division Multiple Access
iii
SPECIFICATIONS FOR 800 MHz RADIOS
All specifications are per Electronic Industries Association (EIA) 316B unless otherwise noted.
GENERAL
FCC Designation:
Temperature Range:
Operating:
Storage:
RECEIVER
AZ489FT5774
Frequency Range:
Bandwidth:
–30°C to +60°C
–40°C to +85°C
Quieting Sensitivity (20dBQ):
TRANSMITTER
851–870MHz
19MHz
0.5µV Max.
Power Supply: Nickel-Cadmium Battery (NiCd)
or Nickel-Metal-Hydride Battery (NiMH)
Usable Sensitivity
(12dB SINAD):
0.35µV Max.
Battery Voltage:
Nominal:
Range:
Intermodulation:
–70dB
7.5 Volts
6 to 9 Volts
Recommended Battery:
Ultra-HIgh Capacity NiMH:
H335AC
or Ultra–High Capacity NiCd FM:
H223AX*
or NiMH FM IS:
Q393AB
Optional FM (Factory Mutual) Battery:
* FM Intrinsically Safe: Class I, II, III, Division 1,
Groups D, F, and G
Dimensions (H x W x D)
Note: 2.44" = width at PTT; 2.34" = width at
bottom; 1.83" = depth at speaker; 0.97" = depth
at keypad
Less Battery:
6.58" x 2.44" x 1.83"/6.58" x 2.34" x 0.97"
(167.13mm x 61.90mm x 46.42mm/
167.13mm x 59.49mm x 24.56mm)
With Ultra-High Capacity NiMH Battery:
6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"
(167.13mm x 61.90mm x 46.42mm/
167.13mm x 59.49mm x 41.97mm)
With Ultra-High Capacity NiCd Battery:
6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"
(167.13mm x 61.90mm x 46.42mm/
167.13mm x 59.49mm x 41.97mm)
With NiMH FM IS Battery:
6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"
(167.13mm x 61.90mm x 46.42mm/
167.13mm x 59.49mm x 41.97mm)
Frequency Range:
Frequency Stability
(–30 to +60°C; 25°C ref.):
FM Hum and Noise
(Companion Receiver):
–70dB
Distortion:
Spurious Rejection:
–70dB
Modulation Limiting:
(821-824MHz):
Frequency Stability
(–30+60°C; 25°C reference):
Rated Audio:
Distortion (At Rated Audio):
Channel Spacing:
±.00015%
500mW
3% Typical
25kHz
Specifications subject to change without notice
3 Watts
806–825MHz
851–870MHz
± .00015%
Emission (Conducted and Radiated):
Selectivity
(25kHz Adjacent Channel):
Weight: (w/Helical Antenna)
Less Battery:
14.10oz. (383gm)
With Ultra-High Cap. NiMH: 23.45oz. (644gm)
With Ultra-High Cap. NiCd: 25.19oz. (693gm)
With NiMH FM IS:
23.45oz. (644gm)
iv
RF Power:
Emissions Designators:
20K0F1E, 16K0F3E, 15K0F2D,
15K0F1D, and 8K10F1E
–46dBw
–40dB
3% Typical
±5kHz
±4kHz
GLOSSARY
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.
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 configuration 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.
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.
Open Architecture
A controller configuration that utilizes a microprocessor 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 coverage.
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 muted 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 operation of a system.
SPI
Serial Peripheral Interface; how the microcontroller communicates to
modules and ICs through the CLOCK and DATA lines.
vi
Squelch
Muting of audio circuits when received signal levels fall below a predetermined value.
SRAM
Static-RAM chip used for volatile, program/data memory.
SSI
Synchronous Serial Interface on the DSP56001 consisting of six signals and
used for an RX and TX modulated data interface to the ADSIC.
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.
TSOP
Thin Small-Outline Package
UART
Universal Asynchronous Receiver Transmitter.
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.
VOCON
VOcoder/CONtroller board
VSELP
Vector Sum Excited Linear Predictive coding; a voice encoding technique
used in ASTRO digital voice.
VSWR
Voltage Standing Wave Ratio
vii
Notes
viii
1
Introduction
General
This manual covers information needed for level one troubleshooting. Level
one troubleshooting consists of radio programming, radio alignment, knobs
replacement, and installation and removal of antenna, belt clip, battery, and
universal connector cover. This will be the only level of service allowed for the
service centers, self-maintained customers, and distributors for the first six
months of the life of this product.
Included in this manual are radio specifications for the 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.
Notations Used
in This Manual
Throughout the text in this publication, you will notice the use of warnings,
cautions, and notes. These notations are used to emphasize that safety hazards
exist, and care must be taken and observed.
NOTE:
An operational procedure, practice, or
condition, etc., which is essential to
emphasize.
CAUTION indicates a potentially hazardous
situation which, if not avoided, may result in
equipment damage.
Caution
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in death or injury.
WARNING
DANGER
DANGER indicates an imminently
hazardous situation which, if not
avoided, will result in death or injury.
Radio
Description
The ASTRO Digital XTS 3000 radios are among the most sophisticated twoway 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 the newest in a long line of quality Motorola products, 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.
Such features add up to better, more cost-effective two-way radio
communications.
ASTRO Digital XTS 3000 radios are available in two basic models. Table 1
provides a description of their basic features.
Table 1 ASTRO XTS 3000 Basic Features
Feature
FLASHport
Basic Model
Full-Featured Model
Display
None
LCD
4 lines/
12 characters per line
Keypad
None
3 x 6 button
Channel Capability
48
255
Dialing from Prestored List
No
Yes
Programmable Softkeys
No
Yes
The ASTRO Digital XTS 3000 radio utilizes Motorola’s revolutionary
FLASHport technology. FLASHport makes it possible to add software that
drives the radio’s capabilities both at the time of purchase and later on.
Previously, changing a radio’s features and capabilities meant significant
modifications, or buying a new radio. But now, similar to how a computer can
be loaded with different software, the radio’s features and capabilities can be
upgraded with FLASHport software.
Basic Maintenance
Introduction
to This Section
This section of the manual describes preventive maintenance and handling
precautions. Each of these topics provides information vital to the successful
operation and maintenance of your radio.
Preventive
Maintenance
The ASTRO Digital XTS 3000 radios do not require a scheduled preventive
maintenance program; however, periodic visual inspection and cleaning is
recommended.
Inspection
Check that the external surfaces of the radio are clean, and that all external
controls and switches are functional. A detailed inspection of the interior
electronic circuitry is not needed.
Cleaning
The following procedures describe the recommended cleaning agents and the
methods to be used when cleaning the external surfaces of the radio. External
surfaces include the housing assembly and battery case. These surfaces should
be cleaned whenever a periodic visual inspection reveals the presence of
smudges, grease, and/or grime.
The only recommended agent for cleaning the external radio surfaces is a 0.5%
solution of a mild dishwashing detergent, such as JOY®, in water.
Caution
Cleaning External
Plastic Surfaces
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.
(The detergent-water solution should be applied sparingly with a stiff, nonmetallic, short-bristled brush to work all loose dirt away from the radio. A soft,
absorbent, lintless cloth or tissue should be used to remove the solution and
dry the radio. Make sure that no water remains entrapped near the connectors,
cracks, or crevices.
Handling
Precautions
Complementary metal-oxide semiconductor (CMOS) devices, and other hightechnology devices, are used in this family of radios. While the attributes of
these devices are many, their characteristics make them susceptible to damage
by electrostatic discharge (ESD) or high-voltage charges. Damage can be latent,
resulting in failures occurring weeks or months later. Therefore, special
precautions must be taken to prevent device damage during disassembly,
troubleshooting, and repair. Handling precautions are mandatory for this
radio, and are especially important in low-humidity conditions.
At this time, troubleshooting and repair of the radio will not be supported by
the field or self-maintained customer. DO NOT attempt to disassemble the
radio.
Recommended Test
Equipment and
Service Aids
Recommended
Test
Equipment
The list of equipment contained in Table 2 includes all of the standard test
equipment required for servicing two-way portable radios, as well as several
unique items designed specifically for servicing this family of radios. The
“Characteristics” column is included so that equivalent equipment may be
substituted; however, when no information is provided in this column, the
specific Motorola model listed is either a unique item or no substitution is
recommended.
Table 2 Recommended Test Equipment
Motorola
Model Number
Description
Characteristics
R2670 or R2600
System Analyzer
R1049A*
Digital Multimeter
Recommended for ac/dc voltage
and current measurements
R1150C*
Code Synthesizer
Injection of audio and digital
signalling codes
S1053D*
SKN6008A*
SKN6001A*
AC Voltmeter
Power Cable for Meter
Test Leads for Meter
1mV to 300V, 10-Megohm
input impedance
Audio voltage measurements
R1094A
Dual-Trace Oscilloscope
20MHz bandwidth 5mV to
5V/division
Waveform measurements
S1350C*
ST1213B (VHF)*
ST1223B (UHF)*
Wattmeter
Plug-In Element
RF Dummy Load
50-ohm, ±5% accuracy
10 watts, maximum
0-1000MHz, 300W
Transmitter power output
measurements
R1065
Load Resistor
10-watt Broadband
For use with wattmeter
S1339A
RF Millivolt Meter
100µV to 3V RF
RF-level measurements
R1013A*
SINAD Meter
S1347D or S1348D
(programmable)
DC Power Supply
Service Aids
This monitor will substitute
for items with an asterisk (*).
Application
Frequency/deviation meter and
signal generator for wide-range
troubleshooting and alignment.
Receiver sensitivity measurements
0-20Vdc, 0-5 Amps
current limited
Bench supply for 7.5Vdc
Refer to Table 3, “Service Aids,” for a listing and description of the service aids
designed specifically for servicing this family of radios. These kits and/or parts
are available from the Motorola Parts Division offices listed in the
“Replacement Parts Ordering” section located on the inside back cover of this
manual. While all of these items are available from Motorola, most are
standard shop equipment items, and any equivalent item capable of the same
performance may be substituted for the item listed.
Table 3 Service Aids
Motorola Part
Number
Description
Application
RKN-4035D
RIB/Radio/Test Set Cable
Connects radio to RTX-4005B Test Box and RIB.
REX-4424
Battery Eliminator
Interconnects radio to power supply.
RLN-4460A, or
RTX-4005B, or both
RTX-4005A and
RPX-4665A
Portable Test Set
Enables connection to the universal connector.
Allows switching for radio testing.
Field Modification Kit
RLN-1015A or
RLN-4008B
Radio Interface Box
Enables communications between the radio and the
computer's serial communications adapter.
01-80357A57
Wall-Mounted Power Supply
Used to supply power to the RIB (120 Vac).
01-80358A56
Wall-Mounted Power Supply
Used to supply power to the RIB (220 Vac).
30-80369B71 or
30-80369B72
Computer Interface Cable
Use B72 for the IBM PC AT. All other IBM models use
B71. Connects the computer's serial communications
adaptor to the RIB.
RVN-4100F
Radio Service Software
Software on 3-1/2 in. and 5-1/4 in. floppy disks.
58-80348B33
SMA to BNC Adaptor
Adapts radio’s antenna port to BNC cabling of test
equipment.
Field
Programming
Equipment
This family of radios can be aligned and programmed in the field. This requires
specific equipment and special instructions. Refer to the applicable “Radio
Service Software User's Guide” for complete field programming information.
4
Performance Checks
Introduction
to This Section
This section covers performance checks used to verify the radio meets
published specifications. The recommended test equipment listed in the
previous section approaches the accuracy of the manufacturing equipment,
with a few exceptions. Accuracy of the equipment must be maintained in
compliance with the manufacturer’s recommended calibration schedule.
Setup
Supply voltage can be connected from the battery eliminator. The equipment
required for alignment procedures is connected as shown in the “Radio
Alignment Test Setup” diagram (page 13, Figure 1).
Initial equipment control settings should be as indicated in the following
table, and should hold for all alignment procedures except as noted in Table 4.
Table 4 Initial Equipment Control Settings
System Analyzer
Test Set
Power Supply
Monitor Mode: Pwr Mon
Spkr Set: A
Voltage: 7.5Vdc
RF Attn: –70dB
Spkr/Load: Speaker
DC On/Standby: Standby
AM, CW, FM: FM
PTT: OFF (center)
Volt Range: 10Vdc
O'scope Source: Mod
O'scope Horiz: 10mSec/Div
O'scope Vert: 2.5kHz/Div
O'scope Trig: Auto
Monitor Image: Hi
Monitor BW: Nar
Monitor Squelch: Mid CW
Monitor Vol: 1/4 CW
Current: 2.5Amps
Test Mode
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 removed from its normal
environment. It cannot receive commands from its system and, therefore, the
internal microcomputer will not key the transmitter nor unmute the receiver.
This prevents the use of normal tune-up procedures. To solve this problem a
special routine, called TEST MODE or “air test,” has been incorporated in the
radio.
To enter the test mode:
1. Turn the radio on and adjust the volume for a comfortable listening level.
The volume level remains constant once in the test mode.
2. Within 10 seconds after the “Self Test” is complete, press Side Button 3
five times in succession.
3. After “RF TEST” appears, press the Top Programmable Button (normally
programmed as the emergency button) once. “1 CSQ” appears, indicating:
test frequency 1, carrier squelch mode.
4. Each additional press of Side Button 3 will advance to the next test
channel. (Refer to Table 5.)
5. Pressing Side Button 2 will scroll through and access test environments as
shown in Table 6.
NOTE:
Transmit into a load when keying a radio
under test.
Table 5 Test Frequencies
Test Channel
800MHz
TX #1
806.0125
RX #1
851.0625
TX #2
815.0125
RX #2
860.0625
TX #3
824.9875
RX #3
869.9375
TX #4
851.0125
RX #4
851.0625
TX #5
860.0125
RX #5
860.0625
TX #6
869.9875
RX #6
869.9375
TX #7
None
RX #7
None
Table 6 Test Environments
Display
Description
Function
CSQ
Carrier Squelch
RX: unsquelch if carrier detected
TX: mic audio
TPL
Tone PrivateLine
RX: unsquelch if carrier and tone (192.8 Hz) detected
TX: mic audio + tone (192.8 Hz)
AST
ASTRO
RX: none
TX: 1200Hz tone *
* All deviation values are based on deviation tuning of this mode.
Control Top
and Keypad
Test Mode
To check the display, buttons, and switches, perform the following tests:
1. Turn the radio on and adjust the volume for a comfortable listening level.
The volume level remains constant once in the test mode.
2. Within 10 seconds after the “Self Test” is complete, press Side Button 3
five times in succession.
3. After “RF TEST” appears on the display, press Side Button 1 once, “CH
TEST” appears on the display.
4. Next, press and hold the Top Programmable Button; all segments on the
display will light, and the LED on the control top will illuminate a red
color.
5. Release the Top Programmable Button; “3/0” appears, which indicates
that the Top Programmable Button is in the open condition.
6. Press the Top Programmable Button again; “3/1” appears, which
indicates that the Top Programmable Button is in the closed condition.
7. Rotate the Mode/Zone Selector Switch; “4/0” through “4/15” appears,
which indicates that the selector switch is in mode/zone position 1
through 15.
8. Rotate the Two-Position (A/B) Switch; “65/0” and “65/1” appear.
9. Rotate the Three-Position Programmable Switch; “67/0,”
“67/1,” and “67/2” appear.
10.Rotate the Volume Control; “2/0” through “2/255” appear.
11.Press Side Button 1; “96/1” appears; release, “96/0” appears.
12.Press Side Button 2; “97/1”appears; release, “97/0” appears.
13.Press Side Button 3; “98/1”appears; release, “98/0” appears.
14.Press the PTT Switch; “1/1” appears; release, “1/0” appears.
15.Keypad Checks:
Press 0, “48/1” appears; release, “48/0” appears.
Press 1, “49/1” appears; release, “49/0” appears.
Press 2, “50/1” appears; release, “50/0” appears.
Press 3, “51/1” appears; release, “51/0” appears.
Press 4, “52/1” appears; release, “52/0” appears.
Press 5, “53/1” appears; release, “53/0” appears.
Press 6, “54/1” appears; release, “54/0” appears.
Press 7, “55/1” appears; release, “55/0” appears.
Press 8, “56/1” appears; release, “56/0” appears.
Press 9, “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.
Press O, “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.
Table 7 Receiver Performance Checks
Test Name
Reference
Frequency
System Analyzer
Mode: PWR MON 4th
channel test frequency❖
Monitor: Frequency error.
Input at RF In/Out
Rated Audio
Mode: GEN
Output level: 1.0mV RF 4th
channel test frequency❖
Radio
Test Set
Comments
TEST MODE,
4 CSQ output
at antenna
PTT to continuous
(during the
performance check)
Frequency error to
be ≤ ±1.2kHz
TEST MODE,
4 CSQ
PTT to OFF (center);
meter selector to Audio
PA
Set volume control
to 3.74Vrms
Mod: 1kHz tone at 3kHz
deviation
Monitor: DVM: ac Volts
Distortion
As above, except to
distortion
As above
As above
Distortion < 3.0%
Sensitivity
(SINAD)
As above, except SINAD;
lower the RF level for 12dB
SINAD
As above
PTT to OFF (center)
RF input to be <
0.35µV
Noise Squelch
Threshold (only
radios with
conventional
system need to
be tested)
RF level set to 1mV RF
As above
PTT to OFF (center);
meter selection to
Audio PA; spkr/load to
speaker
Set volume control
to 3.74Vrms
As above, except change
frequency to a
conventional system. Raise
RF level from zero until
radio unsquelches.
Out of TEST
MODE; select
a conventional
system
As above
Unsquelch to
occur at < 0.25µV.
Preferred SINAD =
8-10dB
❖ See Table 6
10
Table 8 Transmitter Performance Checks
Test Name
Reference
Frequency
System Analyzer
Mode: PWR MON 4th
channel test frequency❖
Radio
Test Set
Comments
TEST MODE,
4 CSQ
PTT to continuous
(during the
performance check).
Frequency error to be ≤
±1.2kHz.
Monitor: Frequency
error. Input at RF In/Out
Power RF
As above
As above,
4 CSQ
As above
Refer to Maintenance
Specifications page in
front of manual.
Voice
Modulation
Mode: PWR MON 4th
channel test frequency❖
atten to –70, input to RF
In/Out.
As above,
4 CSQ
As above, meter
selector to mic
Deviation: 800MHz: ≥
3.6kHz but ≤ 5.0kHz
Monitor: DVM, ac Volts.
Set 1kHz Mod Out level
for 0.025Vrms at test set,
80mVrms at ac/dc test
set jack
Voice
Modulation
(internal)
Mode: PWR MON 4th
channel test frequency❖
atten to –70, input to RF
In/Out
TEST MODE,
4 CSQ, output
at antenna
Remove modulation
input
Press PTT switch on radio.
Say “four” loudly into the
radio mic. Measure
deviation: 800MHz: ≥
3.8kHz but ≤ 5.0kHz
PL Modulation (radios
with conventional, clear
mode, coded
squelch operation only)
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 ≤ 1000Hz
Talkaround
Modulation
(radios with
conventional,
clear mode,
talk-around
operation
only)
Change frequency to
conventional talkaround frequency.
Conventional
talkaround
personality
(clear mode
operation)
1 CSQ
As above
Deviation: 800MHz: ≥
3.8kHz but ≤ 5.0kHz
Talkaround
Modulation
(radios with
conventional,
secure mode,
talkaround
operation
only) (**)
Change frequency to
conventional talkaround frequency.
Conventional
talkaround
personality
(secure mode
operation).
Load key into
radio 1 sec.
As above
Deviation: 800MHz: ≥
3.6kHz but ≤ 4.4kHz
Mode: PWR MON
deviation, attenuation to
–70, input to RF In/Out.
Monitor: DVM, ac volts
Set 1kHz Mod Out level
for 25mVrms at test set.
Mode: PWR MON
deviation, attenuation to
–70, input to RF In/Out.
Monitor: DVM, ac volts
Mod: 1kHz out level
for25mVrms at test set.
800MHz radios only
**
The secure mode, talkaround modulation test is only required for trac mode radios which do not have clear mode
talkaround capability.
❖
See Table 6
11
Notes
12
5
Radio Alignment
Procedures
Introduction
to This Section
This section describes both receiver and transmitter radio alignment
procedures.
General
An IBM personal computer (PC) and radio service software (RSS) are required
to align the radio. Refer to the applicable RSS manual for installation and setup
procedures for the software. To perform the alignment procedures, the radio
must be connected to the PC, radio interface box (RIB), and a universal test set
as shown in Figure 1.
30 dB PAD
SYSTEM ANALYZER
OR COUNTER
30 dB PAD
WATTMETER
TRANSMIT
BNC
RF GENERATOR
SMA-BNC
58-80348B33
RECEIVE
SET TO APPROX. 450mV FOR Tx
BATTERY
ELIMINATOR
REX-4424
RTL-4224A
TEST SET
TEST SET
RLN-4460A or
RTX-4005B
RTX-4005B
RADIO
PROGRAM/TEST CABLE
RKN-4035D
RKN-4046A
AUDIO IN TX
RX
AUDIO GENERATOR
SINAD METER
AC VOLTMETER
MEASURE 80mV FOR Tx
COMPUTER
DATA
BUSY
GND
RIB
RIB
RLN-1015A or
RLN-4008B
RLN-4008B
RIB POWER SUPPLY
01-80357A57 (120V)
COMPUTER INTERFACE
CABLE
30-80369B71
30-80369B72 (IBM "AT" ONLY)
Figure 1 Radio Alignment Test Setup
All service and tuning procedures are performed from the SERVICE menu,
which is selected by pressing B from the MAIN MENU. Figure 2 illustrates
how the RSS alignment SERVICE screens are organized.
13
SERVICE
F2 - TRANSMITTER ALIGNMENT MENU
F1 - HELP
F2 - REFERENCE OSCILLATOR ALIGNMENT
F3 - TRANSMIT POWER ALIGNMENT
F4 - TRANSMIT DEVIATION BALANCE
(COMPENSATION) ALIGNMENT
F5 - TRANSMIT DEVIATION LIMIT ALIGNMENT
F10 - EXIT, RETURN TO SERVICE MENU
F3 - RECEIVER ALIGNMENT MENU
F2 - FRONT END BANDPASS FILTER ALIGNMENT
Figure 2 RSS Service Menu Layout
All SERVICE screens read and program the radio codeplug directly; you do
NOT have to use the RSS GET/SAVE functions to use the SERVICE menus.
Caution
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.
The SERVICE screens introduce the concept of the “softpot,” an analog
SOFTware-controlled POTentiometer used for adjusting all transceiver
alignment controls.
Each SERVICE screen provides the capability to increase or decrease the
‘softpot’ value with the keyboard UP/DOWN arrow keys respectively. A
graphical scale is displayed indicating the minimum, maximum, and
proposed value of the softpot, as shown in Figure 3.
15
Min.
Value
Max.
Value
Figure 3 Softpot Concept
14
Adjusting the softpot value sends information to the radio to increase
(or decrease) a dc voltage in the corresponding circuit. For example,
pressing the UP arrow key at the Reference Oscillator screen instructs
the radio’s microcomputer to increase the voltage across a varactor in
the reference oscillator, which increases the frequency.
In ALL cases, the softpot value is just a relative number corresponding
to a digital-to-analog (D/A) generated voltage in the radio.
Perform the following procedures in the sequence indicated.
NOTE:
Reference
Oscillator
Alignment
Some of the following screens may
vary depending upon the radio under
test and the version of radio service
software you are using. Refer to your
radio service software user’s guide.
Adjustment of the reference oscillator is critical for proper radio
operation. Improper adjustment will result not only in poor operation,
but also in a misaligned radio that will interfere with other users
operating on adjacent channels. For this reason, the reference
oscillator should be checked every time the radio is serviced. The
frequency counter used for this procedure must have a stability of 0.1
ppm (or better).
1. From the SERVICE MENU, press B to select the TRANSMITTER
ALIGNMENT MENU.
2. Press B again to select the REFERENCE OSCILLATOR alignment
screen. See Figure 4.
MOTOROLA Radio Service Software
ASTRO
Model: H09UCH9PW7AN
Use UP/DOWN Arrows To Adjust Softpot.
MAIN:SERVICE:TX ALIGN:REF OSC
REFERENCE OSCILLATOR
-------------------Frequency
--------869.9875
Current Value
------------150
New Softpot Value.....150
Transmitter..On
255
MIN |----+----+----+----+----+----+----+----+----+----+----+----| MAX
F1
HELP
F2
F3
F4
F5
F6
TOGGLE
PTT
F7
F8
PROGRAM
VALUE
F9
F10
EXIT
Figure 4 Reference Oscillator Alignment Screen
3. Press P (or Z or [RETURN]) to select a frequency field
(starting with the highest frequency shown). Then, press F to
key the radio. The screen will indicate that the radio is
transmitting.
15
4. Measure the transmit frequency on your service monitor.
5. Use the É/Ç arrow keys to adjust the reference oscillator softpot value.
See Table 9.
Table 9 Reference Oscillator Alignment
Band
Target
800 MHz
±150 Hz
6. Press F again to dekey the radio.
7. Press H to program the new softpot value.
8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or
press J twice to return to the SERVICE MENU.
Transmit
Power
Alignment
NOTES:
•
All power measurements are to be made at the antenna port.
•
The transmitter power setting keeps the radiated power at or below
the level specified in the exclusionary clause for low power devices
of IEEE Standard C95.1-1991.
1. From the SERVICE MENU, press B to select the TRANSMITTER
ALIGNMENT MENU.
2. Press C to select the TRANSMIT POWER alignment screen. The screen
will indicate the transmit frequencies to be used. See Figure 5.
MOTOROLA Radio Service Software
ASTRO
Model: H09UCH9PW7AN
Use UP/DOWN Arrows To Adjust Softpot.
MAIN:SERVICE:TX ALIGN:TX POWER
TRANSMIT POWER
-------------Frequency
--------806.00000
815.00000
824.00000
851.00000
860.00000
869.00000
Current Value
High Pwr Low Pwr
-------- ------35
35
42
42
50
50
60
60
70
70
80
80
New Softpot Value
High Pwr Low Pwr
-------- ------10
23
11
28
20
33
33
40
43
45
58
58
Transmitter..On
127
MIN |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| MAX
F1
HELP
F2
F3
F4
F5
F6
TOGGLE
PTT
F7
F8
PROGRAM
VALUE
F9
F10
EXIT
Figure 5 Transmit Power Alignment Screen
3. Press P (or Z or [RETURN]) to select a frequency field (starting with
the highest frequency shown). Then, press F to key the radio. The
screen will indicate that the radio is transmitting.
4. Use the É/Ç arrow keys to adjust the transmit power per the values
shown in Table 10.
16
Table 10 Transmit Power Setting
800MHz Power Level
All Test Frequencies
3 Watts
3.2 - 3.4
5. Press F to dekey the radio.
6. Press H to program the value.
7. Repeat steps 3-6 for the remaining frequencies.
8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or
press J twice to return to the SERVICE MENU.
Transmit
Deviation
Balance
(Compensation)
Alignment
Compensation alignment balances the modulation sensitivity of the VCO and
reference modulation (synthesizer low-frequency port) lines. The
compensation algorithm is critical to the operation of signalling schemes that
have very-low-frequency components (for example, DPL) and could result in
distorted waveforms if improperly adjusted.
1. From the SERVICE MENU, press B to select the TRANSMITTER
ALIGNMENT MENU.
2. Press D to select the TRANSMIT DEVIATION BALANCE
(COMPENSATION) alignment screen. The screen will indicate the
transmit frequencies to be used. See Figure 6.
MOTOROLA Radio Service Software
ASTRO
Model: H09UCH9PW7AN
Use UP/DOWN Arrows To Adjust Softpot.
MAIN:SERVICE:TX ALIGN:BAL ATTN
TRANSMIT DEVIATION BALANCE (COMPENSATION)
----------------------------------------Current
Frequency Value
New Softpot Value
--------- ----------------------806.000
30
30
815.000
30
30
824.000
30
30
851.000
45
45
860.000
45
45
869.000
45
45
Transmitter..Off
63
MIN |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| MAX
F1
HELP
F2
F3
F4
TOGGLE LOW
TONE PTT
F5
F6
F7
TOGGLE HIGH
TONE PTT
F8
PROGRAM
VALUE
F9
F10
EXIT
Figure 6 Transmit Deviation Balance (Compensation) Alignment Screen
3. Press P (or Z or [RETURN]) to select a frequency field (starting with
the lowest frequency shown).
4. Press D. This will cause the radio to key and the radio’s DSP IC to inject
an 80Hz tone into the RF board.
5. Measure the deviation and record this value.
6. Press D to dekey the radio.
17
7. Press F. This will cause the radio’s DSP IC to change the injection tone
to 3kHz, 100mVrms. Use the É/Ç arrow keys to adjust the deviation to
within ±2% of the value recorded in step 5.
8. Repeat steps 4-7 until the 3kHz tone deviation is within ±2% of the 80Hz
tone deviation.
9. Press F again to dekey the radio.
10.Press H to program the new softpot value.
11.Repeat steps 3-10 for the remaining frequencies.
12.Press J once to return to the TRANSMITTER ALIGNMENT MENU, or
press J twice to return to the SERVICE MENU.
Transmit
Deviation
Limit
Alignment
IMPORTANT NOTE:
Put the radio in the RF test mode and scroll to
the ASTRO test environment, indicated by
“AST” on the display (refer to the
“Performance Checks” section for details). All
other deviation values are derived from the
ASTRO test environment mode transmit
deviation limit.
1. From the SERVICE MENU, press B to select the TRANSMITTER
ALIGNMENT MENU.
2. Press E to select the TRANSMIT DEVIATION LIMIT alignment screen.
The screen will indicate the transmit frequencies to be used. See Figure 7.
MOTOROLA Radio Service Software
ASTRO
Model: H09UCH9PW7AN
Use UP/DOWN Arrows To Adjust Softpot.
MAIN:SERVICE:TX ALIGN:VCO ATTN
TRANSMIT DEVIATION LIMIT
-----------------------Current
Value
------175
175
180
180
180
180
Frequency
--------806.000
815.000
824.000
851.000
860.000
869.000
New Softpot Value
----------------175
175
180
180
180
180
Transmitter..Off
255
MIN |----+----+----+----+----+----+----+----+X---+----+----+----| MAX
F1
HELP
F2
F3
F4
F5
F6
TOGGLE
PTT
F7
F8
PROGRAM
VALUE
F9
F10
EXIT
Figure 7 Transmit Deviation Limit Alignment Screen
3. Press P (or Z or [RETURN]) to select a frequency field (starting with
the lowest frequency shown).
4. Press F to key the radio. Then use the É/Ç arrow keys to adjust for a
deviation per the values shown in Table 11.
18
Table 11 Transmit Deviation Limit
Band
Deviation (Hz)
800 MHz
2785 - 2885
5. Press F again to dekey the radio.
6. Press H to program the softpot value.
7. Repeat steps 3-6 for the remaining frequencies.
8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or
press J twice to return to the SERVICE MENU.
19
Notes
20
Basic Removal/Installation
Procedures
Introduction
to This Section
This section gives basic procedures for removing and installing the XTS 3000
radio’s:
• Antenna,
• Battery,
• Belt Clip,
• Universal Connector Cover,
• Volume Knob, and
• Frequency Knob.
Antenna
Installing the
Antenna
Screw the threaded end of the antenna into the antenna receptacle on the top
of the radio. Rotate the antenna clockwise until it seats firmly against the
bushing.
Removing the
Antenna
Rotate the antenna counterclockwise until its threaded end unscrews from the
radio’s antenna receptacle.
Battery
NOTE:
WARNING
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.
Caution
21
Installing the
Battery
1. Turn off the radio and hold it with the back of
the radio facing upward
2. Insert the top edge of the battery into the area
at the top of the radio between the radio’s
case and chassis. Make sure the three tabs on
the radio chassis align with the three slots
under the top edge of the battery.
3. Rotate the battery toward the radio, and
squeeze the battery and radio together until
the battery “clicks” in place.
Removing the
Battery
1. Turn off the radio and hold it so that the release
button on the bottom of the battery is facing
upward.
2. Press downward on the release button so the
battery disengages from the radio.
3. Remove the battery completely away from the
radio
Belt Clip
Installing the
Belt Clip
NOTE:
The battery must be removed from the radio
before the belt clip can be installed or removed.
1. Hold the battery in one hand so that the top of
the battery faces upward, and the back of the
battery faces you.
Slide
Assembly
2. Holding the belt clip in the other hand with its
top facing upward, align the slide assembly on
the front of the belt clip with the slots on the
back of the battery.
3. Slide the belt clip downward toward the bottom
of the battery until the belt clip “clicks” in place.
Belt Clip
Slots
Battery
Removing the
Belt Clip
1. Hold the battery (with belt clip installed) in one
hand so that the top of the battery faces upward,
and the front (radio side) of the battery faces
you.
2. At the top of the battery, press down on the belt
clip’s metal tab and slide the belt clip upward
until it disengages from the battery.
3. Continue to slide the belt clip upward until it is
free from the battery.
22
Press
Down
Metal
Tab
Universal
Connector
Cover
When the universal connector is not in use, keep it covered
with the universal connector cover.
Caution
Installing the
Universal
Connector Cover
1. Looking at the antenna side of the radio,
insert the top (flat) hooked end of the cover
into the slot on the top of the radio, above
the universal connector. Press downward on
the cover’s top to seat it in the slot.
2. While holding the cover seated in the top
slot, insert the cover’s bottom (rounded)
hooked end into the slot below the universal
connector. Press firmly inward on the cover’s
bottom until it snaps in place.
Removing the
Universal
Connector Cover
Top
Top
Slot
Hooked End
Bottom
Hooked End
Bottom
Slot
1. Looking at the antenna side of the radio,
insert a flat-bladed screwdriver into the area
between the lower end of the universal
connector cover and the slot below the
universal connector.
2. Pry upward on the cover’s lower end until it
disengages from the radio.
Frequency
Knob
Removing the
Frequency Knob
NOTES:
•
Refer to Figure 8, the Partial Exploded View, and Table 12, the
Partial Exploded View Parts List. Numbers in parentheses ( ) refer to
item numbers in Figure 8 and Table 12.
•
The battery (7) should be removed from the radio before installing
or removing the frequency knob (1).
1. Hold the radio in one hand so that the top of the radio faces upward, and
the front of the radio faces you.
2. With the other hand, grasp the frequency knob (1) and pull it upward,
while pushing it toward the back of the radio, until it is free from the
frequency insert (3).
3. While pressing the insert’s (3) two snap tabs away from the frequency
control shaft so that the insert disengages from the shaft, use needle-nosed
pliers to lift the insert up and off of the frequency control shaft.
4. Remove the secure lever (4) and the lightpipe (5).
Installing the
Frequency Knob
1. Hold the radio so that the top of the radio faces upward, and the front of
the radio faces you.
23
2. Align the lightpipe (5) so that its straight tab is over the slot for the
illuminated pointer. Push the tab down into the slot so that it is securely
seated.
3. Place the secure lever (4) on the frequency control shaft, aligning it so that
its pointer is at the front of the radio and its two inner slots line up with
the two keys on the shaft. Slide the secure lever down to the bottom of the
shaft.
4. If you are replacing the escutcheon (2), remove the backing paper from
the escutcheon, align its alignment marker with the alignment notch
(between numbers 4 and 5) on the insert, and adhere it to the insert.
5. Place the frequency insert (3) and escutcheon (2) on the frequency control
shaft, aligning the insert’s D-shaped hole with the D-shaped shaft. Press
downward firmly on the insert until it “snaps” in place on the shaft.
6. Place the frequency knob (1) on the frequency insert (3), aligning it’s
pointer with the number “1” on the escutcheon (2). Press firmly
downward on the knob until it seats securely in place.
Volume Knob
Removing the
Volume Knob
NOTES:
•
Refer to Figure 8, the Partial Exploded View, and Table 12, the
Partial Exploded View Parts List. Numbers in parentheses ( ) refer to
item numbers in Figure 8 and Table 12.
•
The battery (7) should be removed from the radio before installing
or removing the volume knob (8).
1. Hold the radio in one hand so that the top of the radio faces upward, and
the front of the radio faces you.
2. With the other hand, grasp the volume knob (8) and pull it upward, while
pushing it toward the back of the radio, until it is free from the volume
insert (9).
3. While pressing the volume insert’s (9) two snap tabs away from the
volume control shaft so that the insert disengages from the shaft, use
needle-nosed pliers to pull the insert up and off of the volume control
shaft.
4. Using needle-nosed pliers or some other pointed instrument, remove the
o-ring (21).
Installing the
Volume Knob
1. Place the o-ring (21) inside the volume insert (9), and press it downward
until it seats securely at the bottom of the insert.
2. Hold the radio so that the top of the radio faces upward, and the front of
the radio faces you.
3. Place the volume insert (9) on the volume control shaft, aligning its Dshaped hole with the D-shaped shaft. Press downward firmly on the insert
until it “snaps” in place on the shaft.
4. Place the volume knob (8) on the volume insert (9), aligning the two lugs
on the inside of the knob with the insert’s two snap tabs. Press firmly
downward on the knob until it seats securely in place.
24
1
Alignment Marker
Alignment Notch
15
16
17
21
18
10
11
20
00
S3
XT
12
ME
HO
13
EF
3D
AB
HI
4G
NO
6M
JK
TU
XY
9W
RS
7P
14
Figure 8 Partial Exploded View
25
Table 12 Partial Exploded View Parts List
ITEM
NO.
MOTOROLA
PART NO.
3605370Z01
KNOB, Frequency
1305374Z01
ESCUTCHEON, Frequency
4305373Z01
INSERT RETAINER, Frequency Knob
4305375Z01
LEVER, Secure Frequency
6105376Z01
LIGHTPIPE INDICATOR/STOP, Frequency
NTN8266A
CLIP, Belt
NTN8298A
Battery, NiCd
3605371Z01
KNOB, Volume
4305372Z01
INSERT RETAINER, Volume Knob
10
3305574Z01
LABEL, Motorola, Back
11
----------
LABEL, Flashport
12
----------
LABEL, Radio Serial Number
13
----------
LABEL, Approval Agency
14
3305630Z02
LABEL, Bottom
15
26
NAF5037A
DESCRIPTION
ANTENNA, 800MHz Whip (806-870 MHz)
or NAF5039A
ANTENNA, 800MHz Dipole (806-870 MHz)
or NAF5042A
ANTENNA, 800MHz Stubby Quarterwave
(806-870 MHz)
16
----------
ESCUTCHEON, Concentric Switch (optional)
17
----------
ESCUTCHEON, Toggle (optional)
18
1505579Z01
COVER, Dust, Universal Connector
19
3305573Z01
LABEL, Motorola, Front
20
3505586Z01
Gortex
21
3205379W01
O-Ring
Basic Theory of
Operation
General
Overview
The ASTRO Digital XTS 3000 radio is a wideband, synthesized, fixed-tuned
radio available in the 800MHz band. All ASTRO Digital XTS 3000 radios are
capable of both analog operation and ASTRO mode (digital) operation in
12.5kHz or 25kHz 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) switch, monitor button, several
function-selectable switches, universal connector, speaker, and
microphone.
• Display (Full-Featured Model Only) - a four-line, 12-character liquid
crystal display (LCD).
• Keypad (Full-Featured Model Only) - a 3 x 6 keypad.
Analog Mode
of Operation
When the radio is receiving, the signal comes from the antenna connector to
the RF board, passes through the RX/TX switch and the receiver front end. The
signal is then filtered, amplified, and mixed with the first local-oscillator signal
generated by the voltage-controlled oscillator (VCO).
The resulting intermediate frequency (IF) signal is fed to the IF circuitry, where
it is again filtered and amplified. This amplified signal is passed to the digital
back-end IC, where it is mixed with the second local oscillator to create the
second IF at 450kHz. It is then converted to a digital bit stream and mixed a
third time to produce a baseband signal. This signal is passed to the vocoder
board through a current-driven differential output.
On the vocoder board, 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 conversion to an analog signal. The DSP-support IC
will then present the signal to the audio power amplifier, which drives the
speaker. For signalling information, the DSP will decode the message and pass
it to the microcontrol unit.
27
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 are done. The DSP returns this signal to the DSPsupport 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.
ASTRO Mode
of Operation
In the ASTRO mode (digital mode) of operation, the transmitted or received
signal is limited to a discrete set of deviation levels, instead of continuously
varying. The receiver handles an ASTRO-mode signal identically to an analogmode signal up to the point where the DSP decodes the received data. In the
ASTRO receive mode, the DSP uses a specifically defined algorithm to recover
information.
In the ASTRO transmit mode, microphone audio is processed identically to an
analog mode with the exception of the algorithm the DSP uses to encode the
information. This algorithm will result in deviation levels that are limited to
discrete levels.
RF Board Basic
Theory of
Operation
The receiver front end consists of a preselector, an RF amplifier, a second
preselector, and a mixer. On the 800MHz receiver front end, both preselectors
are varactor-tuned, two-pole, fixed-tuned filters. The RF amplifier is a dualgate, gallium- arsenide based IC. The mixer is a double-balanced, active mixer
coupled by transformers. Injection is provided by the VCO through an
injection filter. See Table 13 for local oscillator (LO) and first IF information.
Table 13 Local Oscillator and First IF Frequencies
800MHz
LO Frequency Range
First IF Frequency
732.65-796.65MHz
73.35MHz
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 controlled by the microcontrol unit through a
serial bus. Most of the synthesizer circuitry is enclosed in rigid metal cans on
the RF board to reduce microphonic effects.
The receiver back end consists of a two-pole crystal filter, an IF amplifier, a
second two-pole crystal filter, and the digital back-end IC. The two-pole filters
are wide enough to accommodate 5kHz modulation. Final IF filtering is done
digitally in the DSP-support IC.
28
The digital back-end IC consists of an amplifier, the second mixer, an
IF analog-to-digital converter, a baseband down-converter, and a
2.4MHz synthesis circuit to provide a clock to the DSP-support IC on
the 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.
Controller Board
Basic Theory of
Operation
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 board are the display
board, RF board, vocoder board, keypad board, controls/universal flex,
and (optional) encryption module.
The microcontrol unit controls receive/transmit frequencies, power
levels, display, and other radio functions, using either direct logic
control or serial communications paths to the devices.The
microcontrol unit executes a stored program located in the FLASH
ROM. Data is transferred to and from memory by the microcontrol
unit data bus. The memory location from which data is read, or to
which data is written, is selected by the address lines.
The 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 radio. 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.
Vocoder Board
Basic Theory of
Operation
The vocoder board contains the digital-signal processor (DSP), its
memory devices, 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 33MHz crystal to
function. An 8kHz interrupt signal generated by the DSP-support IC is
29
also required for functionality. It is programmed using parallel
programming from the microcontrol unit and the DSP-support IC.
The DSP-support IC performs analog-to-digital and digital-to-analog
conversions on audio signals. It contains attenuators for volume,
squelch, deviation, and compensation, and it executes receiver
filtering and discrimination. The IC requires a 2.4MHz clock to
function (generated by the digital back-end IC) and is programmed by
the microcontrol unit SPI bus.
30
Radio-Level
Troubleshooting
Introduction
to This Section
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, programming, battery replacement, 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 Detailed Service Manual,” Motorola
publication number 68P81083C90.
Power-Up
Error Codes
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 errors 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
particular power-up error code displays.
Table 14 Power-Up Error Code Displays
Error
Code
Description
Corrective Action
01/02
External EEPROM Checksum Non-Fatal Error
Reprogram codeplug.
01/81
ROM Checksum Failure
Send radio to depot.
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.
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
Send radio to depot.
02/88
DSP RAM Failure - Note: not a checksum failure
Turn the radio off, then on.
02/90
General DSP Hardware Failure (DSP startup message not received correctly)
Turn the radio off, then on.
02/A0
ADSIC Checksum 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.
Note: If the corrective action does not fix the failure, send the radio to the depot.
31
Operational Error
Codes
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 Table 15 to aid in
understanding particular operational error codes.
Table 15 Operational Error Code Displays
Error Code
FAIL 001
Description
Corrective Action
Synthesizer Out-of-Lock
a. Reprogram codeplug
b. Send radio to depot
FAIL 002
Selected Mode/Zone Codeplug Checksum Error
Reprogram codeplug
Table 16 Receiver Troubleshooting Chart
Symptom
Radio Dead; Display Does
Not Light Up
Possible Cause
Correction or Test (Measurements
Taken at Room Temperature)
1. Dead Battery
Replace with charged battery.
2. Blown Fuse
Send radio to depot.
3. On/Off Switch
4. Regulators
Radio Dead; Display
Lights Up
1. Controller Board
No Receiver Audio or
Receiver Does Not Unmute
Programming
Send radio to depot.
2. RF Board
a. Does the transmitted signal match the receiver
configuration (PL, DPL, etc.)?
b. With the monitor function enabled, can the radio
be unmuted?
Audio Distorted or Not Loud
Enough
Synthesizer Not On
Frequency
Check synthesizer frequency by measuring the transmitter
frequency; if off by more than ±250Hz, realign.
RF Sensitivity Poor
1. Synthesizer Not
On Frequency
Check synthesizer frequency by measuring the transmitter
frequency; if off by more than ≤ ±600Hz, realign.
2. Antenna Switch
Send radio to depot.
3. Receiver FrontEnd Tuning
(VHF/ UHF only)
Check RF front-end tuning for optimum sensitivity using
the RSS.
Controller Board
Send radio to depot.
Radio Will Not Turn Off
32
Table 17 Transmitter Troubleshooting Chart
Symptom
Correction or Test
(Measurements Taken at Room
Temperature)
Possible Cause
No RF Power Out
1. TX Power Level or Frequency
Check TX power level and frequency
programming (from RSS).
2. No PTT From Control Top
Send radio to depot.
3. No Injection To Power Amplifier
No Modulation;
Distorted Modulation
1. Programming
Check deviation and compensation
settings using the RSS.
2. Controller Board
Send radio to depot.
1. Check Deviation and Compensation
Realign if necessary.
2. Microphone
Send radio to depot.
No/Low Signalling
(PL, DPL, MDC)
1. Programming
Check Programming
2. Controller Board
Send radio to depot.
Can’t Set Compensation
RF Board
Send radio to depot.
Bad Microphone Sensitivity
Table 18 Encryption Troubleshooting Chart
Symptom
Possible Cause
Corrective Action
No “KEYLOAD” on Radio Display When Keyloading
Cable is Attached to the Radio Side Connector
1. Defective Keyload Cable
Keyloader Displays “FAIL.”
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.
Send radio to depot.
2. Defective Radio
Note: Keyloaders “T----AX” and “T----BX” must be upgraded to “T----CX” and “T----DX” in order to
keyload an XTS 3000 radio.
33
Notes
34
BASIC SERVICE MANUAL QUESTIONNAIRE
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(over)
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
BUSINESS REPLY MAIL
FIRST CLASS MAIL PERMIT NO 9040 FT. LAUDERDALE, FL
POSTAGE WILL BE PAID BY ADDRESSEE
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6. General comments/suggestions:
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REPLACEMENT PARTS ORDERING
ORDERING INFORMATION
When ordering replacement parts or equipment
information, the complete identification number
should be included. This applies to all
components, kits, and chassis. If the component
part number is not known, the order should include
the number of the chassis or kit of which it is a
part, and sufficient description of the desired
component to identify it.
Crystal and channel element orders should
specify the crystal or channel element type number,
crystal and carrier frequency, and the model
number in which the part is used.
Orders for active filters, Vibrasender and
Vibrasponder resonant reeds should specify type
number and frequency, should identify the
owner/operator of the communications system in
which these items are to be used, and should
include any serial numbers stamped on the
components being replaced.
MAIL ORDERS
Send written orders to the following addresses:
Replacement Parts/
Test Equipment/Manuals
Crystal Service Items:
Federal Government Orders:
International Orders:
Motorola Inc.
Americas Parts Division
Attention: Order Processing
1313 E. Algonquin Road
Schaumburg, IL 60196
Motorola Inc.
Americas Parts Division
Attention: Order Processing
7230 Parkway Drive
Landover, MD 21076
Motorola Inc.
Americas Parts Division
Attention: International Order Processing
1313 E. Algonquin Road
Schaumburg, IL 60196
TELEPHONE ORDERS
Americas Parts Division:
Field Assist Service Training
Call:
(FAST VHS Video Tapes):
Call:
708-576-8012
1-800-422-4210
1-800-826-1913 (For Federal Government Orders)
1-708-538-8023 (International Orders)
TELEX/FAX ORDERS
Americas Parts Division:
FAX:
Federal Government Orders:
708-538-8198 (Domestic)
708-576-3023 (International)
FAX:
410-712-4991
Parts ID: 708-538-8194
Telex:
280127 (Domestic)
403305 (International)
PRODUCT CUSTOMER SERVICE
PARTS CUSTOMER SERVICE
Americas Parts Division:
Call:
1-800-422-4210
Parts Identification:
Call:
708-538-0021
Customer Response Center
(Sales and Service Assistance):
Call:
FAX:
1-800-247-2346
1-800-232-9272
TEPF-9679-S
TM
Digital XTS 3000
Portable Radios
Basic Service Manual
*6881083C85*
68P81083C85-O
Motorola
8000 West Sunrise Boulevard
Fort Lauderdale, Florida 33322
TM

---

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User Access                     : Print, Copy, Annotate, Fill forms, Extract, Assemble, Print high-res
Create Date                     : 1996:08:14 15:23:28Z
Modify Date                     : 1997:07:10 14:51:52Z
Subject                         : Basic Service Manual
Keywords                        : 83C85, 68P81083C85, XTS 3000, XTS3000, ASTRO digital
Page Count                      : 48
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Page Layout                     : SinglePage
Creation Date                   : 1996:08:14 15:23:28Z
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Mod Date                        : 1997:07:10 14:51:52Z
Author                          : Motorola
Title                           : 83C85-O ASTRO Digital XTS 3000 Portable Radios Basic Service Manual
Description                     : Basic Service Manual
Creator                         : Motorola

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