Motorola R-2001A User manual

®MOTOROLA
· test equipment
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.... ~ R·2001AIR·2002A
68P81069A84·0
Table of contents

MOTOROLA INC.
Communications
Group
R-2001A/R-2002A
COMMUNICATIONS SYSTEM
ANALYZER
© Motorola, Inc. 1980
All Rights Reserved
Printed in U.S.A. 1313 E.Algonquin Road, Schaumburg, II. 60196 68P81069A84-0
5/ 30 /80-SK

TABLE OF CONTENTS
Paragraph Page
FOREWORD ................................................................................
SECTION 1
1-1Introduction .............................................................................1-1
SECTION 2 — DESCRIPTION
2-1Description ..............................................................................2-1
2-3 Microprocessor ..........................................................................2-1
2-4 Display .................................................................................. 2-1
2-5System Warnings ......................................................................... 2-1
2-6 Functions ................................................................................ 2-1
2-7AM, FM,CW, DSB Signal Generation ...................................................... 2-2
2-8 Simultaneous Modulation ................................................................. 2-2
2-9Modulation Display ....................................................................... 2-2
2-10 Sweep Generation ........................................................................ 2-2
2-11 SINAD Metering .......................................................................... 2-2
2-12 Multi-Mode Code Synthesizer ............................................................. 2-2
2-13Off-The-AirMonitor ...................................................................... 2-2
2-14 IFDisplay ................................................................................ 2-2
2-15Spectrum Analyzer ....................................................................... 2-3
2-16 RF Burnout Protection .................................................................... 2-3
2-17Terminated RF Power Measurement ....................................................... 2-3
2-18 In-Line Power Measurement ..................................................................... 2-3
2-19 Duplex Generator ........................................................................ 2-3
2-20 500-kHz Oscilloscope ............................................................................2-3
2-21 Frequency Counter ....................................................................... 2-4
2-22 AC/DC Voltmeter......................................................................... 2-4
2-23 Power Supply ............................................................................ 2-4
2-24 Accessories .............................................................................. 2-4
SECTION 3 — INSTALLATION
3-1 Packing Information ...................................................................... 3-1
3-4 Initial Setup .............................................................................. 3-1
3-5 Analyzer ................................................................................. 3-1
3-6 Battery Pack ............................................................................. 3-2
3-7Blower Assembly ......................................................................... 3-2
SECTION 4 — OPERATION
4-1 General .................................................................................4-1
4-3 Controls, Indicators, and Connectors ...................................................... 4-1
4-5 Operation ................................................................................ 4-12
4-7 Calibrate ................................................................................... 4-12
i

TABLE OF CONTENTS (CONT)
Paragraph Page
SECTION 4 — OPERATION (CONT)
4-8 Generator Operation ..............................................................................4-13
4-9 Duplex Generation .......................................................................... 4-14
4-10 Frequency Counter ........................................................................... 4-15
4-11 Spectrum Analyzer ....................................................................... 4-15
4-12 Monitor .................................................................................. 4-16
4-13 Ext Wattmeter ........................................................................... 4-17
4-14 Simultaneous Generate and Measurement Operations ..................................... 4-17
SECTION 5 — MAINTENANCE
5-1 Service .................................................................................................5-1
5-6 Replacement Parts Ordering ........................................................................ 5-1
5-9 Addresses .................................................................................................5-1
5-10 General Offices ......................................................................................5-1
5-11 U.S.Orders. .............................................................................5-2
5-12 Canadian Motorola Electronics Company ....................................................... 5-2
5-13 AllCountries Except U. S. and Canada .................................................... 5-2
5-14 Major Assemblies .............................................................................5-4
5-16 Theory of Operation ...................................................................... 5-5
5-17 General .................................................................................. 5-5
5-20 System Control ...............................................................................5-5
5-25 Generate Mode .......................................................................... 5-5
5-34 Power Meter ............................................................................... 5-11
5-40 Monitor Mode ............................................................................ ...5-12
5-52 Duplex Generator ........................................................................ 5-14
5-56 Code Synthesizer ..............................................................................5-15
5-65 Frequency Counter ........................................................................ 5-17
5-71 Digital Voltmeter (DVM) .........................................................................5-17
5-84 Oscilloscope ............................................................................ 5-19
5-96 Sinad Meter ............................................................................. 5-21
5-99 Alignment Procedure .................................................................... 5-22
5-100 Introduction ............................................................................ 5-22
5-102Test Equipment Required ................................................................ 5-22
5-104 Preparation for Alignment ............................................................... 5-23
5-105BasicAlignment Procedure .............................................................. 5-23
5-118Extended Alignment Procedure .......................................................... 5-27
5-126 Checkout Procedure .................................................................... 5-32
5-127 Introduction ............................................................................ 5-32
5-129Test Equipment Required ................................................................ 5-32
5-131 Procedure .............................................................................. 5-33
5-146System Troubleshooting ................................................................. 5-37
SECTION 6 — SYSTEM INTERCONNECT AND PARTS LISTS
ii

TABLE OF CONTENTS (CONT)
ParagraphPage
SECTION 7 - LOW VOLTAGE POWER SUPPLY (A1)
7-1General .................................................................................. 7-1
7-2 Input Power Control ...................................................................... 7-1
7-6 DC Output Control ........................................................................7-1
7-9 ProtectionCircuitry .........................................................................7-1
7-13High VoltageSupply Control .............................................................. 7-2
SECTION 8 — SCOPE AMPLIFIER (A2)
8-1 General .................................................................................. 8-1
8-2 DeflectionAmplifiers ..................................................................... 8-1
8-3Horizontal Timebase Generator ........................................................... 8-1
8-5 Horizontal Switching ..................................................................... 8-1
8-6 Intensity Control ...................................................................... 8-1
8-8Focus Control ............................................................................ 8-1
8-9 Astigmatism,Geometry, and TraceRotation ............................................... 8-1
SECTION 9 - SCOPE/DVM CONTROL MODULE (A3)
9-1 General ................................................................................. 9-1
9-4Scope Vertical Control .................................................................. 9-1
9-7 SSBDetection..........................................................................9-1
9-8 455 kHz PLL ............................................................................ 9-2
9-9 Scope Horizontal Control ................................................................. 9-2
9-11 SynthesizerSweep Control .............................................................. 9-2
9-12Scope Z-Axis Control ................................................................... 9-2
9-13 Modulation Display Control .............................................................. 9-2
9-17 Peak Detector ............................................................................ 9-3
9-18 DVM Control ............................................................................. 9-3
9-21 SINAD Detection ....................................:.................................... 9-4
9-22 Module Control .......................................................................... 9-4
SECTION 10— RECEIVER (A4)
10-1General ................................................................................ 10-1
10-2 Down Converter ...........................................................................10-1
10-4 Linear IFAmplifierand Detectors .............................................................10-1
10-8 AudioSwitchingand Filtering .......................................................... 10-1
10-10Logarithmic Amplifierand Detector ...................................................... 10-2
10-11AlarmGenerator and Audio Amplifier ..................................................... 10-2
10-12 Module Control ......................................................................... 10-2
SECTION11— RF SYNTHESIZER (A5)
11-1 General ................................................................................. 11-1
11-2 Frequency Synthesis Scheme ........................................................... 11-1
iii

TABLE OF CONTENTS (CONT)
Paragraph Page
SECTION 11- RF SYNTHESIZER (A5) (CONT)
11-5310-440 MHz Phase Locked Loop........................................................11-1
11-6 60.5 MHz Phase Locked Loop ............................................................ 11-1
11-7 550 MHz Phase Locked Loop ............................................................ 11-1
11-9 500-1000 MHz Phase Locked Loop ....................................................... 11-2
11-10 Modulation Control ...................................................................... 11-2
11-11Module Control ........................................................................11-2
SECTION 12 - AUDIO SYNTHESIZER (A6)
12-1 General ................................................................................ 12-1
12-2 Private Line Generator ...................................................................12-1
12-7 DPL Generator .......................................................................... 12-1
12-10 1kHz Tone ............................................................................ 12-2
12-11 External Modulation .................................................................... 12-2
12-12 Modulation Control .....................................................................12-2
12-14 Module Control .............................................................................12-2
SECTION 13— PROCESSOR I/O MODULE (A7)
13-1 General .................................................................................. 13-1
13-2 10.245 MHz Phase Locked Loop.......................................................... 13-1
13-3System ControlBus Interface ............................................................ 13-1
13-6 DVM ..................................................................................... 13-1
13-8 Frequency Counter ........................................................................13-1
SECTION 14- IEEE INTERFACE MODULE (A8)
14-1 General .................................................................................. 14-1
14.2 IEEE Bus Interface ...................................................................... 14-1
14-3 RF Level Control ....................................................................... 14-1
14-5 Modulation Control ...................................................................... 14-1
14-6 Address Decode and Control Latches ....................................................14-1
SECTION 15- PROCESSOR MODULE (A9)
15-1 General .................................................................................. 15-1
15-2Processor..............................................................................15-1
15-6 Character Generator.......................................................................15-1
SECTION 16— HIGH VOLTAGE POWER SUPPLY (A10)
16-1General ................................................................................. 16-1
16-2 High Voltage Supply .....................................................................16-1
IV

TABLE OF CONTENTS (CONT)
Paragraph Page
SECTION 17— RF INPUT MODULE (AH)
17-1General .................................................................................17-1
17-2Input Protection and Power Meter ....................................................... 17-1
17-4 Wideband Amplifierand Frequency Converter ............................................ 17-1
17-9Duplex Generator ....................................................................... 17-2
SECTION 18- FRONT PANEL INTERFACE MODULE
18-1General ................................................................................. 18-1
18-2Input Coupling and Ranging ............................................................. 18-1
18-4DVM Buffer ............................................................................. 18-1
18-5Frequency Counter Preamp .............................................................. 18-1
18-6Scope Vertical Preamp .................................................................. 18-1
18-7Scope HorizontalPreamp ................................................................ 18-1
18-8 Control and Display Interface ............................................................ 18-1
SECTION 19- 10MHz FREQUENCY STANDARD MODULE (A13)
19-1General ................................................................................. 19-1
SECTION 20 — FRONT PANEL (A14)
SECTION21 — BLOWERASSEMBLY
SECTION 22 — IEEE - 488 BUS CONTROL
22-1Introduction ..........................................................................22-1
22-7 IEEE-488 Bus Structure ................................................................ 22-3
22-9 Bus Signals ........................................................................... 22-3
22-10 Data Transfer ......................................................................... 22-3
22-12 Programming .........................................................................22-3
22-15Command Structure ................................................................... 22-4
22-24 Command Strings .................................................................... 22-10
22-25 Command Types ..................................................................... 22-10
22-29 TriggerCommand .................................................................... 22-10
22-30Return Data .......................................................................... 22-10
22-35 Programming Commands ............................................................. 22-11
22-36 TerminalMode ....................................................................... 22-11
22-42 Error Messages ..................................................................... 22-11
22-45 Service Requests ..................................................................... 22-14
22-46 Programming Considerations ......................................................... 22-15
22-53 General .............................................................................. 22-16
22-54 R2002A AnalyzerConfiguration ....................................................... 22-16
SECTION23— BATTERYASSEMBLY
v

LIST OF ILLUSTRATIONS
Figure Page
1-1 Communications System Analyzer ............................................................1-0
2-1AccessoriesSupplied with Analyzer ........................................................ 2-4
3-1TypicalCommunication System Analyzer Packaging ........................................3-1
4-1Controls, Indicators, and Connectors, Front Panel ..........................................4-2
4-2 Controls,Indicators, and Connectors, Left Side Panel ....................................... 4-3
4-3Controls,Indicators,and Connectors, Rear Panel ..........................................4-3
4-4System AnalyzerTime Base CalibrateTest Setup and CRT Display .........................4-13
4-5Duplex Generation Test Setup and CRT Display ..........................................4-14
4-6Spectrum Test Setup and CRT Display ....................................................4-16
4-7 Wattmeter Test Setup and CRT Display .................................................... 4-17
4-8 Test Setup forFMReceiver Sensitivity Using Generator and SINAD
Meter withCRT Display ................................................................... 4-18
4-9 Test Setup forPager and Alert Functions withCRT Display ................................. 4-19
4-10Test Setup forUsing DVM and Signal Generate withCRT Display ..........................4-20
5-1 Communication System Analyzer,Top View Cover Removed ................................. 5-3
5-2 Communication System Analyzer,Bottom View Cover Removed ............................5-3
5-4 Generate Mode Block Diagram ............................................................ 5-10
5-5Power Meter Block Diagram ............................................................... 5-12
5-6 Monitor Mode Block Diagram ............................................................ 5-13
5-7Duplex Generator Block Diagram .......................................................... 5-15
5-8 Code Synthesizer Block Diagram ......................................................... 5-16
5-9 Frequency Counter Block Diagram ....................................................... 5-17
5-10 Digital Voltmeter (DVM) Block Diagram .................................................... 5-18
5-11Oscilloscope Block Diagram ............................................................5-20
5-12 Sinad Meter Block Diagram ............................................................. 5-22
5-13Scope Amplifier Alignment Points ......................................................... 5-23
5-14Front Panel Interface Alignment Points .................................................... 5-26
5-15 Scope/DVM Control Alignment Points ..................................................... 5-27
5-16 Horizontal Time Base AlignmentPoints .................................................... 5-27
5-17DVM Input Buffer Alignment Points ....................................................... 5-28
5-18 Scope/DVM Control Test Point Numbering ................................................. 5-28
5-19 Processor I/O A/D Alignment Points ....................................................... 5-29
—-5-20 Scope/DVM Control Char Sweep and Sinad Alignment Points .............................. 5-30
VI

LIST OF TABLES
Table . Page
1-1Physical Characteristics .................................................................1-1
1-2Electrical Characteristics ................................................................... 1-1
1-3 Input/Output Characteristics ............................................................... 1-5
2-1AccessoriesSupplied withthe Communication Systems Analyzer ............................ 2-5
2-2 Optional Equipment for Use withAnalyzer .................................................. 2-5
4-1Controls, Indicators, and Connectors ....................................................... 4-1
5-1List of Subassemblies ...................................................................... 5-4
5-2 Control Buses and Functions ............................................................... 5-9
5-3Basic Test Equipment Required ........................................................... 5-22
5-4 Extended Test Equipment Required ......................................................5-23
5-5 Test Equipment .......................................................................... 5-32
5-6System Troubleshooting .................................................................. 5-37
5-7Test Point Identification ................................................................... 5-42
9-1 Internal DVM Inputs ....................................................................... 9-3
22-1 IEEE-488 Interface Controllable Functions ................................... ............... 22-2
22-2 Command Categories ....................................................................... 22-4
22-3 Programming Commands ................................................................. 22-5
22-4 Terminal Mode ASC II Characters Printable Characters .................................. 22-12
22-5 Error Messages ............................................................ ............... 22-14
22-6 SRQ Data ................................................................... ............... 22-14
22-7 Code Synthesizer Programming Considerations .............................. .............. 22-15
vii

FOREWORD
1.SCOPE OF MANUAL
This manual contains information for the installation, operation, and maintenance ofthe Communications
System Analyzer.
2.PURPOSE AND USE
The MotorolaCommunications System Analyzer isa portable test instrument, designed specificallyforthe
serviceand monitoringof communicationsequipment.Its functionssupersede those of a ServiceMonitor,
expandingthe featuresand capabilities to the point wherein servicingisachieved witha single instrument,
rather than a host of separate equipment.
The R2001Aisthestandard CommunicationsSystemAnalyzer.The R2002AAnalyzer,whichcontainsthe
IEEE-488 Standard interface control bus, isalso available. Programming forthe R2002A iscovered inSecton
22 of this manual.
The Analyzer improves a technician's efficiency andaccuracy andreduces servicing time.
The CommunicationsSystemAnalyzerperformsthefunctionsofsignal generation,signal monitoring, and
the tests normally associated withthe devices listed below.
•Spectrum Analyzer
•Duplex Generator
•Modulation Oscilloscope
•Frequency Counter
•AC/DC Digital Voltmeter
•RF Wattmeter
•General Purpose Oscilloscope
•Multi-Mode Code Synthesizer
•SINAD Meter
•Sweep Generator
The Analyzermeets the shock and vibration requirements of EIAtest RS152B, thesame specificationsmet
byMotorolamobile radios.This minimizesfailureswhen the instrumentis used in a mobile servicevan,and
means itis as toughas the radios itservices.
The Communications System Analyzerisdesigned to be serviced quickly and easily, should a breakdown
occur. The majorityof the circuitryison seven modular plug-in circuitboards which have built-intestpoints
that aid inisolating the problem to a specific board. Simple plug-inreplacement gets the instrument back in
1