Motorola R-20018 User manual

TABLE OF CONTENTS
Paragraph
Page
FOREWORD ............................................................................... 1
SECTION 1
1-1 Introduction .............................................................................. 1-1
SECTION 2 - DESCRIPTION
i'
!
2-1
2-3 Description
............................................................................... 2-1
Microprocessor ........................................................................... 2-1
I 2-4
2-5
2-6
Display
.................................................................................. 2-1
System Warnings ......................................................................... 2-1
Functions ................................................................................ 2-1
2-7 AM, FM, CW, DSB Signal Generation ...................................................... 2-2
2-8 Simultaneous Modulation ................................................................. 2-2
2-9 Modulation Display ....................................................................... 2-2
2-10 Sweep Generation ........................................................................ 2-2
2-11
SINAD Metering .......................................................................... 2-2
2-12 Multi-Mode Code Synthesizer ............................................................. 2-2
2-13 Off-The-Air Monitor ...................................................................... 2-2
2-14
IF Display ................................................................................ 2-2
2-15 Spectrum Analyzer ....................................................................... 2-3
2-16 RF Burnout Protection .................................................................... 2-3
2-17 Terminated
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
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
3-7 Blower 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

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 All Countries Except U.S. and Canada .................................................... 5-2
5-14 Major Assemblies ......................................................................... 5-4
5-16 Theory of Operation ...................................................................... 5-7
5-17 General .................................................................................. 5-7
5-20 System Control. .......................................................................... 5-7
5-25 Generate Mode ........................................................................... 5-7
5-34 Power Meter ............................................................................ 5-13
5-40 Monitor Mode ........................................................................... 5-14
5-52 Duplex Generator ....................................................................... 5-16
5-56 Code Synthesizer ...................................................................... ·· 5-17
5-65 Frequency Counter ...................................................................... 5-19
5-71 Digital Voltmeter (DVM) ................................................................. · 5-19
5-84 Oscilloscope ............................................................................ 5-21
5-96 Sinad Meter .......................................................................... · .. 5-23
5-99 Alignment Procedure .................................................................... 5-24
5-100 Introduction ............................................................................. 5-24
5-102 Test Equipment Required ................................................................ 5-24
5-104 Preparation for Alignment. ............................................................... 5-25
5-105 Basic Alignment Procedure .............................................................. 5-25
5-118 Extended Alignment Procedure ........................................................... 5-30
5-126 Checkout Procedure ..................................................................... 5-34
5-127 Introduction .......................................................................... ··· 5-34
5-129 Test Equipment Required ................................................................ 5-34
5-131 Procedure ............................................................................... 5-35
5-146 System Troubleshooting ................................................................. 5-39
SECTION 6 - SYSTEM INTERCONNECT AND PARTS LISTS
ii
!
@ MOTOROLA INC.
Communications
Group
© Motorola, Inc:. 1980
AU Righls Reserved
Printed in U.S.A.
R-20018/R-20028
COMMUNICATIONS SYSTEM
ANALYZER
1313 E. Algonquin Road, Schaumburg,ll. 60196 68P81069A93-0
6/30/SI·SK
j

LIST OF ILLUSTRATIONS
Figure Page TABLE OF CONTENTS
(CONT)
1-1 Communications System Analyzer .......................................................... 1-0 Paragraph Page
2-1 Accessories Supplied with Analyzer ......................................................... 2-4 SECTION 7- LOW VOLTAGE POWER SUPPLY (A1)
3-1 Typical Communication System Analyzer Packaging ......................................... 3-1
7-1 General .................................................................................. 7-1
4-1 Controls, Indicators, and Connectors, Front Panel ........................................... 4-2 7-2 Input Power Control
...................................................................... 7-1
4-2 Controls, Indicators, and Connectors, Left Side Panel ....................................... 4-3 7-6 DC Output Control
....................................................................... 7-1
4-3 Controls, Indicators. and Connectors, Rear Panel ............................................ 4-3
4-4 System Analyzer Time Base Calibrate Test Setup and CRT Display
.......................... 4-13
7-9 Protection
Circuitry ....................................................................... 7-1
7-13 High Voltage Supply Control ............................................................. 7-2
7-14 Switcher Module A1A1 ................................................................... 7-2
4-5 Duplex Generation Test Setup and CRT Display ............................................ 4-14 7-17 Output Module A1A2
...................................................................... 7-2
4-6 Spectrum Test Setup and CRT Display
..................................................... 4-16
4-7 Wattmeter Test Setup and CRT Display .................................................... 4-17
7-21 Control Module A1A3 .................................................................... 7-3
7-24 Relay Module A1A4
...................................................................... 7-4
4-8 Test Setup for FM Receiver Sensitivity Using Generator and SINAD SECTION 8 - SCOPE AMPLIFIER (A2)
Meter with CRT Display ................................................................... 4-18
8-1 General .................................................................................. 8-1
4-9 Test Setup for Pager and Alert Functions with CRT Display ................................. 4-19 8-2 Deflection Amplifiers
..................................................................... 8-1
4-10 Test Setup for Using DVM and Signal Generate with CRT Display ........................... 4-20 8-3 Horizontal Timebase Generator
........................................................... 8-1
5-1 Communication System Analyzer. Top View Cover Removed ................................. 5-6
5-2 Communication System Analyzer, Bottom View Cover Removed
.............................. 5-6
8-5 Horizontal Switching
...................................................................... 8-1
8-6 Intensity Control ......................................................................... 8-1
8-8 Focus Control ............................................................................ 8-1
5-3 Communication System Analyzer Block Diagram .......................................... 5-9 8-9 Astigmatism, Geometry, and Trace Rotation
............................................... 8-1
5-4 Generate Mode Block Diagram ............................................................ 5-12
5-5 Power Meter Block Diagram ............................................................... 5-14 SECTION 9 - SCOPE/DVM CONTROL MODULE (A3)
5-6 Monitor Mode Block Diagram ............................................................. 5-15
5-7 Duplex Generator Block Diagram .......................................................... 5-17
9-1 General .................................................................................. 9-1
9-4 Scope Vertical Control .................................................................... 9-1
9-7 SSB Detection ............................................................................ 9-1
5-B Code Synthesizer Block Diagram .......................................................... 5-18 9-8 455 kHz PLL
............................................................................. 9-2
5-9 Frequency Counter Block Diagram ........................................................ 5-19 9-9 Scope Horizontal Control
................................................................. 9-2
5-10 Digital Voltmeter (DVM) Block Diagram
.................................................... 5-20
5-11 Oscilloscope Block Diagram ............................................................... 5-22
9-11 Synthesizer Sweep Control. ............................................................... 9-2
9-12 Scope Z-Axis Control ..................................................................... 9-2
9-13 Modulation Display Control ............................................................... 9-2
5-12 Sinad Meter Block Diagram ............................................................... 5-24 9-17 Peak Detector
............................................................................ 9-3
5-13 Scope Amplifier Alignment Points ......................................................... 5-25
5-14 Front Panel Interface Alignment Points
.................................................... 5-28
5-15 Scope/DVM Control Alignment Points
..................................................... 5-29
9-18 DVM Control
............................................................................. 9-3
9-21 SINAD Detection ......................................................................... 9-4
9-22 Module Control.
.......................................................................... 9-4
5-16 Horizontal Time Base Alignment Points .................................................... 5-29 SECTION
10 -RECEIVER (A4)
5-17 DVM Input Buffer Alignment Points
........................................................ 5-30
10-1 General ................................................................................. 10-1
5-18 Scope/DVM Control Test Point Numbering ................................................. 5-30
5-19 Processor 1/0 A/D Alignment Points ....................................................... 5-31
5-20 Scope/DVM Control Char Sweep and Sinad Alignment Points ............................... 5-32
10-2 Down Converter ......................................................................... 1 0-1
10-4 Linear IF Amplifier and Detectors ......................................................... 10-1
10-8 Audio Switching and Filtering ............................................................ 10-1
10-10 Logarithmic Amplifier and Detector ....................................................... 10-2
10-11 Alarm Generator and Audio Amplifier ..................................................... 10-2
10-12 Module Control.
......................................................................... 10-2
vi
iii

r TABLE OF CONTENTS (CONT)
TABLE OF CONTENTS (CONT) Paragraph
Page
Paragraph
Page
SECTION 16- HIGH VOLTAGE POWER SUPPLY (A10)
SECTION
11 - RF SYNTHESIZER (AS)
16-1 General ................................................................................. 16-1
16-2 High Voltage Supply ..................................................................... 16-1
11-1 General ................................................................................. 11-1
11-2 Frequency Synthesis Scheme ............................................................ 11-1
SECTION 17- RF INPUT MODULE (A11)
11-5 310-440 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
17-1 General ................................................................................. 17-1
17-2 Input Protection and Power Meter ........................................................ 17-1
17-4 Wideband Amplifier and Frequency Converter ............................................. 17-1
17-9 Duplex Generator ....................................................................... 17-2
11-11 Module Control. ......................................................................... 11-2 SECTION
18- FRONT PANEL INTERFACE MODULE
SECTION 12 -AUDIO SYNTHESIZER (A6)
18-1 General ................................................................................. 18-1
12-1
General ................................................................................. 12-1
12-2 Private Line Generator ................................................................... 12-1
12-7 DPL Generator .......................................................................... 12-1
12-10 1 kHz Tone .............................................................................. 12-2
12-11 External Modulation ..................................................................... 12-2
12-12 Modulation Control
...................................................................... 12-2
18-2 Input Coupling and Ranging
............................................................. 18-1
18-4 DVM Buffer ............................................................................. 18-1
18-5 Frequency Counter Preamp .............................................................. 18-1
18-6 Scope Vertical Preamp ................................................................... 18-1
18-7 Scope Horizontal Preamp ................................................................ 18-1
18-8 Control and Display Interlace ............................................................ 18-1
12-14 Module Control. ......................................................................... 12-2 SECTION
19- 10 MHz FREQUENCY STANDARD MODULE (A13)
SECTION 13- PROCESSOR 1/0 MODULE (A7)
19-1 General ................................................................................. 19-1
13-1 General ................................................................................. 13-1
13-2 10.245 MHz Phase Locked Loop .......................................................... 13-1
13-3 System Control Bus Interface ............................................................ 13-1
SECTION 20 -FRONT PANEL (A14)
20-1 General. ................................................................................ 20-1
I
t .
13-6 DVM .................................................................................... 13-1 20-2 Display Board ........................................................................... 20-1
13-8 Frequency Counter ...................................................................... 13-1
SECTION 21 -IEEE -488 BUS CONTROL
SECTION
14- IEEE INTERFACE MODULE (A8)
21-1
Introduction .......................................................................... 21-1
14-1 General ................................................................................. 14-1 21-7
IEEE-488 Bus Structure ............................................................... 21-3
14.2 IEEE Bus Interface ...................................................................... 14-1
21-9 Bus Signals .......................................................................... 21-3
14-3
RF Level Control ........................................................................ 14-1 21-10 Data Transfer
........................................................................ 21-3
14-5 Modulation Control
...................................................................... 14-1
21-12 Programming .......................................................................... 21-3
14-6 Address Decode and Control Latches
..................................................... 14-1 21-15 Command Structure
.................................................................. 21-4
SECTION 15 -PROCESSOR MODULE (A9) 21-24
' 21-25 Command Strings
.................................................................... 21-7
Command Types
..................................................................... 21-7
15-1 General ................................................................................. 15-1
15-2 Processor and Buffer .................................................................... 15-1
15-3 Program Memory (ROM) ................................................................ 15-1
15-4 Nonvolatile Memory (NVM) .............................................................. 15-1
15-5 Random Access Memory (RAM) ......................................................... 15-1
15-6 Peripheral Interface Adapter (PIA) ....................................................... 15-1
15-7 Timing Generator ................................ · ....................................... 15-1
15-8 Character Generator .................................................................... 15-1
' . 21-29
21-30
21-35
21-36
21-42
21-45
21-46
21-53
Trigger Command
.................................................................... 21-7
Return Data
.......................................................................... 21-7
Programming Commands
............................................................. 21-8
Terminal Mode
....................................................................... 21-8
Error Messages
....................................................................... 21-8
Service Requests ..................................................................... 21-10
Programming Considerations ......................................................... 21-11
General .............................................................................. 21-12
21-54 R2002A Analyzer Configuration
....................................................... 21-12
SECTION 22- BATTERY ASSEMBLY
iv
v

LIST OF TABLES
Table Page
1-1 Physical Characteristics .................................................................... 1-1
1-2 Electrical Characteristics ................................................................... 1-1
1-3 Input/Output Characteristics ............................................................... 1-5
2-1 Accessories Supplied with the Communication Systems Analyzer ............................ 2-5
2-2 Optional Equipment for Use with Analyzer
.................................................. 2-5
4-1 Controls, Indicators, and Connectors ....................................................... 4-1
5-1 List of Subassemblies ...................................................................... 5-4
5-2 Control Buses and Functions
.............................................................. 5-11
5-3 Basic Test Equipment Required ........................................................... 5-24
5-4 Extended Test Equipment Required
........................................................ 5-25
5-5 Test Equipment.
.......................................................................... 5-34
5-6 System Troubleshooting
.................................................................. 5-39
5-7 Test Point Identification
................................................................... 5-44
7-1 Control Logic Functions .................................................................. 7-3
9-1 Internal DVM Inputs ....................................................................... 9-3
21-1 IEEE-488 Interface Controllable Functions ........................... .
.. ................ 22-2
21-2 Command Categories
............................................... . .
................. 22-4
21-3 Programming Commands
........................................... .
.. ............... 22-5
21-4 Terminal Mode ASC II Characters Printable Characters
............... .
.. .............. 22-9
21-5 Error Messages
..................................................... .
.. ............... 22-10
21-6 SRQ Data .......................................................... .
.. ............... 22-10
21-7 Code Synthesizer Programming Considerations ...................... . .
................ 22-11
vii

FOREWORD
1. SCOPE OF MANUAL
This manual contains information for t11e installation. operation. and maintenance of the Communications
System Analyzer.
2. PURPOSE AND USE
The Motorola Communications System Analyzer is a portable test instrument. designed specifically for the
service and
monitoring of communications equipment. Its functions supersede those of a Service Monitor
expanding the features and capabilities to the point wherein servicing is achieved with a single instrument
rather than a host of separate equipment.
The R2001B is the standard Communications System Analyzer. The R2002B Analyzer. which contains the
IEEE-488 Standard interface control bus, is also available. Programming for the R2002B is covered in Seeton
21 of this manual.
The Analyzer improves a technician's
efficiency and accuracy and reduces servicing time
The Communications System Analyzer performs the functions of signal generation. signal monitonnq ;mfl
the tests normally associated with the 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 Analyzer meets the shock and vibration requirements of EIA test RS1528, the same specifications met
by Motorola mobile radios. This minimizes failures when the instrument is used in a mobile service van. and
means it is as
tough as the radios it services.
The
Communications System Analyzer is designed to be serviced quickly and easily, should a breakdown
occur.
The majority of the circuitry is on seven modular plug-in circuit boards which have built-in test points
that aid in isolating the problem to a specific board. Simple plug-in replacement gets the instrument back in
service.

CAUTION
This equipment contains parts that are subject to damage by
static electricity. Proper precautions should be taken during
handling.
2

ll52t-45
mama.;
mama
EIIIDI!I l
Figure 1·1. Communications System Analyzer
1-0
1
1
1
81!-\\82
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

SECTION 1
1-1. INTRODUCTION
1-2. This section lists the physical. electrical, and input/output characteristics of the Communications
System Analyzer shown in figure 1-1.
Table 1-1. Physical Characteristics
Characteristic Description
Length 20.75 inches (52.7 em)
Width 15.75 inches (40.0 em)
Height 8.25 inches (21.0 em)
Weight 48
pounds (21.9 kg) (Excluding Battery Pack)
Table 1-2. Electrical Characteristics
Characteristic Description
Frequency
Range
Resolution
Accuracy
Output (into 50 ohms)
Attenuator:
Range:
Accuracy:
Spectral
purity
Spurious:
Harmonics:
Frequency
modulation
Range:
Accuracy:
FM residual noise:
External/internal frequency
range:
External input:
Modes:
Signal Generator Mode
10 kHz to 999.9999 MHz
100Hz
Equal to master oscillator time base
16
dB variable plus 10 dB steps over 13 ranges
0.1/1 V to 1 Vrms (-127 dBm to +13 dBm)
±2 dB accuracy on 0 dB step attenuator range
±2 dB across other step attenuator ranges
±1 dB over temperature range
~-40 dB
~-15 dB
0 - 50 kHz peak
±5% of full scale
100Hz
5Hz- 10kHz (±1 dB)
Approximately 150 mV for 20 kHz deviation
Internal. external, microphone or all simultaneously

Table 1-2. Electrical Characteristics (Continued)
Characteristic I Description
Manual Frequency Scan
Step size Switch Selectable: 100 Hz, 1 kHz,
10 kHz. 100 kHz and
1 MHz
(+ or-)
Step rate 5 steps/sec.
Time Base
Standard TCXO Aging: ±1 x 10-" per year
Temp:± 1 x 10-s maximum error over the oo
to 55°C
temp. range
Optional ovenized high
Agir.;r ±1 x 1 o-' per year
stability Temp: ±5 x 10-
6 maximum
error over the oo to 55° C
temp range (warmup to
±5 x 1 o-' of final frequency
within 20 minutes)
Power and Environmental
-
AC
100-130 VAG, 200-260 VAG 47-63Hz
DC +11.5 VDC to +16 VDC
Optional battery 13.6V battery -provides 1 hour continuous operation
Temperature range
0' to 55°C operating; -40 to 85' C storage
-
Table 1-3. Input/Output Characteristics
Characteristic
Ext mod in
Mic.
Ext Horiz
Vert/Sinad/DVM/Counter In
Description
Input
10K ohms nominal, 150 mV typical for 20kHz dev. FM or
80%AM
Mic input provides bias and IDC limiting suitable for
Motorola RTM 9000A handseL PTTswitches R2001 from
monitor to generate.
1volt
minimum for full screen deflection. Maximum input
10 volts.
1 Meg ohm, 40 pf Nominal; ±300volts DC max, 300 Vrms
max at frequencies
below 500 Hz, 10 Vrms max up to
35 MHz
• Scope vert in: DC to 500 kHz or 5o Hz to 500kHz AC
mode (±3 dB)
• Sinad in: 0.5 to 10 Vrms in at 1 kHz
1-5
·--
Table 1-2. Electrical Characteristics (Continued)
Characteristic Description
l------------------------------1------------------- --------
Amplitude modulation
Range:
Accuracy:
External/internal frequency
range:
External input:
Modes:
Double sideband suppressed
carrier
0 to 80% from 1 to 500 MHz
± 10% of full scale from
0% to 50% AM
5Hz-10kHz (±1 dB)
Approximately 150 mV for 80%, BNC connector
Internal, external, microphone or all simultaneously
Carrier suppression:
?io 25 dB (1 MHz- 500 MHz)
~------~~----------~-------
Frequency
Range:
Resolution:
Accuracy:
Frequency
error indicator
Input sensitivity
Spurious response
Deviation Measurement
Range:
Accuracy:
Peak deviation
limit alarm:
AM
modulation measurement
Range:
Accuracy:
Monitor Mode
1 MHz to 999.9999
MHz
100Hz
Equal to that of master oscillator lime base
Autoranging CRT display. ± 10 Hz resolution for
frequency
error measurements on 1.5 kHz, 5kHz and 15
kHz full scale ranges. ±1 Hz resolution on the 50 Hz
full scale range.
1.5/1 V for 10 dB EIA Sinad (narrow band ±6 kHz
mod. acceptance) 7 Jl. V for 10 dB EIA Sinad (wide
band± 100 kHz mod. acceptance) 4 MHZ to 1000 MHz.
Useable to 1 MHz.
-40 dB typical
0 dB image at ±21.4 MHz
-10 dB at L.O. harmonics ±10.7 MHz
1, 10, 100 kHz full scale
±5%
of reading ±100Hz from 500Hz to 50 kHz deviation;
±10% of reading from 50 kHz to 75kHz deviation
Set via keyboard to 100Hz resolution (0 kHz to
99.9 kHz). Audible alarm indicates limit condition in all
Monitor Modes.
0 to 100%
±5% of full scale
1-2