Giga-tronics 6062A Manual

Manual Number: 794842
Revision:
C
Print Date: May 1997
Operation & Maintenance Manual
Model 6062A
Synthesized RF Signal Generator
The instrument has a 7-digit serial number, shown on a sticker on the rear panel.
This manual applies to all serial numbers which begin with 96, 97, or 98.
Giga-tronics Incorporated 9 4650 Norris Canyon Road 9 San Ramon, California 94583
Phone [phone], or [phone] 9 FAX [phone]
Repair Service [phone] 4 Repair Service FAX [phone]
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Information and specifications contained in this manual are subject to change without notice and do
not represent a commitment
on the part of Giga-tronics Incorporated.
O Copyright Giga-tronics Incorporated, 1997. All rights reserved.
Printed in U.S.A.
WARRANTY
Giga-tronics instruments are warranted against defective materials and
workmanship for one year from date of shipment. Giga-tronics will at its
option repair or replace products that are proven defective during the
warranty period.
This warranty DOES NOT cover damage resulting from improper use,
nor workmanship other than Giga-tronics service.
There is no implied warranty of fitness for a particular purpose, nor is
Giga-tronics liable for any consequential damages.
Giga-tronics Service Contacts
Territory. Primary Contact Secondary Contact
Customer Servige:
USA & Canada
Pacific Rim
& Far East [phone] [phone]
[phone] [phone]
Europe & South Africa [phone] [phone]
(510 328-4646 [phone]
Applications and AII Territories
Technical Support:
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Table of Contents
AboutThisManual .............................................. ix
Conventions
.................................................... xi
Record of Manual Changes
....................................... xiii
Special Configurations ........................................... xv
1 Introduction
1.1 ProductDescription ....................................................... 1-1
1.1.1 Features
..................................................... 1-1
1.1.2 Required Equipment
................................................ 1-2
1.1.3 Tools and Test Equipment
........................................... 1-2
1.1.4 Cooling
....................................................... 1-2
1.1.5 Cleaning
........................................................ 1-2
1.1.6 Mnemonics
....................................................... 1-2
1.1.7 Options
.......................................................... 1-3
1.1.8 Accessories Included ............................................... 1-3
1.1.9 AccessoriesAvailable
............................................... 1-3
1.1.1
0 Receiving Inspection ................................................ 1-3
1.1.11 Preparationfor Reshipment
........................................... 14
1.2 PerformanceSpecifications
................................................. 1-5
1.2.1 Frequency
........................................................ 1-5
1.2.2 Amplitude
........................................................ 1-5
1.2.3 Spectral Purity (CW Only)
........................................... 1-6
1.2.4 Amplitude Modulation
............................................... 1-6
1.2.5 Frequency Modulation
............................................. 1-7
1.2.6 Phase Modulation (QM)
............................................ 1-7
1.2.7 Pulse Modulation
................................................. 1-8
1.2.8 ModulationSource
................................................. 1-8
1.2.9 Non-Volatile Memory
............................................... 1-8
............................................ 1.2.10 Reverse Power Protection 1-8
4
1.3 General Specifications ..................................................... 1-9
1.4 SupplementalCharacteristics
............................................... 1-10
2 Operation
2.1 Installation ............................................................... 2-1
2.1.1 Mountingthe Generator
.............................................. 2-1
2.1.2 Rear Panel Description
.............................................. 2-2
2.1.3 Power and Fuse Requirements
........................................ 2-3
2.1.4 Voltage and FuseSelection
.......................................... 24
2.1.5 VDE Type Voltage and Fuse Holder
.................................... 2-5
2.2 Operation
................................................................ 2-6
2.3 LocalControl
............................................................ 2-11
2.3.1 Function-Data-UnitsEntry
............................................ 2-11
2.3.2 EditEntry
......................................................... 2-12
2.3.3 Step Entry
........................................................ 2-12
2.3.4 Status and Clear Entries
............................................. 2-12
2.3.5 RF Output
......................................................... 2-13
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. 794842. RevC. May 1997
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Model 6062A Synthesized RF Signal Generator
2.3.6 Modulationand Rate ................................................ 2-13
2.3.7 Memory
........................................................... 2-13
2.3.8 Software Compensation Procedures
.................................... 2-13
2.3.9 Special Functions
................................................... 2-14
2.4 RemoteOperation
......................................................... 2-17
2.4.1 Remote-Control
.................................................... 2-17
2.4.2 Setting Up the IEEE-488 Interface
...................................... 2-17
2.4.3 Programming Commands
............................................. 2-18
2.4.4 Programming Examples
.............................................. 2-25
2.4.5 IEEE-488 InterfaceFunctions
......................................... 2-28
2.4.6 Address Mode
...................................................... 2-29
2.4.7 Talk-Only Mode
..................................................... 2-31
2.4.8 Listen-Only Mode
................................................... 2-31
2.4.9 Command Syntax
................................................... 2-32
2.4.10 Command Descriptions
.............................................. 2-35
2.4.1 1 Command Processing
............................................... 2-52
2.4.12 Timing Data
........................................................ 2-53
2.4.1 3 Power-onConditions
................................................ 2-55
2.5 OperatingReference
....................................................... 2-56
2.5.1 Amplitude and Frequency Entry
........................................ 2-56
2.5.2 Amplitude Fixed Range
.............................................. 2-58
2.5.3 Amplitude Units Conversion
........................................... 2-59
2.5.4 Amplitude Units Selection
............................................ 2-60
2.5.5 Cursor Edit Entry
................................................... 2-61
2.5.6 Memory Entry
...................................................... 2-63
2.5.7 ModulationEntry
.................................................... 2-64
2.5.8 Relative Function
................................................... 2-66
2.5.9 RF OutputOnIOff Entry
.............................................. 2-67
2.5.1 0 Special FunctionEntry
............................................... 2-68
2.5.1 1 Status
8. Clear Entry ................................................. 2-69
2.5.12 Step Entry
......................................................... 2-71
3 Theory of Operation
3.1 Introduction ............................................................... 3-1
3.1.1 Front Panel Section
................................................. 3-1
, 3.1.2 Module Section ..................................................... 3-1
3.1.3 Rear Panel Section
.................................................. 3-2
3.2 FunctionalDescription
...................................................... 3-3
3.2.1 Level
............................................................. 3-3
3.2.2 Amplitude Modulation
................................................ 3-3
3.2.3 PulseModulation
................................................... 3-4
3.2.4 Frequency
......................................................... 3-4
3.2.5 Frequency Modulation
............................................... 3-4
3.2.6 Phase Modulation
.................................................. 3-4
3.3 SoftwareOperation
........................................................ 3-5
3.3.1 User Interface
...................................................... 3-5
3.3.2 Amplitude Control
................................................... 3-5
3.3.3 Attenuators
........................................................ 3-5
3.3.4 Level DAC
......................................................... 3-6
3.3.5 Temperature Compensation
........................................... 3-6
3.3.6 Reverse Power Protector
............................................. 3-6
3.3.7 Frequency Reference Control
......................................... 3-6
3.3.8 Frequency Control
.................................................. 3-6
11 ManualNo . 794842 . Rev C . May 1997
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Model 6062A Synthesized RF Signal Generator
3.3.9 Modulation Modes .................................................. 3-7
3.3.10 Compensation Memory
.............................................. 3-8
3.3.1 1 Power-On Self-Test (POST)
.......................................... 3-9
3.3.12 Special Functions
................................................... 3-10
3.3.13 Software Compensation Procedures
.................................... 3-10
3.3.14 Status Signals
..................................................... 3-10
3.4 DetailedCircuit Descriptions
................................................. 3-11
3.4.1 Display PC Assembly (Al)
........................................... 3-11
3.4.2 Controller PC Assembly
(A2) ......................................... 3-12
3.4.3 IEEE-488 InterfaceAssembly (A3)
..................................... 3-14
3.4.4 SynthesizerPC Assembly (A4)
........................................ 3-14
3.4.5 VCO PC Assembly (A5)
............................................. 3-22
3.4.6 Output PC Assembly (A6 and A7)
..................................... 3-23
3.4.7 Attenuator PC Assembly (A8)
......................................... 3-27
3.4.8 Power Supply Assembly (A9) ......................................... 3-28
4 Calibration & Testing
4.1 Introduction .............................................................. 4-1
4.1.1 Safety
............................................................ 4-1
4.1.2 Recommend Test Equipment
......................................... 4-2
4.2 CalibrationProcedures
..................................................... 4-3
4.2.1 Power Supply Adjustment
............................................ 4-3
4.2.2 Extemal Modulation Level IndicatorAdjustment
.......................... 4-5
4.2.3 Synthesizer PC Assembly
............................................ 4-6
4.2.4 Output Assembly Adjustment
......................................... 4-13
4.3 PerformanceTests
........................................................ 4-24
4.3.1 Test Equipment
.................................................... 4-24
4.3.2 Power-On Self-Test (POST)
.......................................... 4-24
4.3.3 FrequencyAccuracy Test
............................................ 4-25
4.3.4 SynthesisTest
..................................................... 4-26
4.3.5 High-LevelAccuracy Test
............................................ 4-27
4.3.6 Mid-LevelAccuracy Test
............................................. 4-30
............................................. 4.3.7 Low-LevelAccuracy Test 4-31
4.3.8 Alternate-Level Accuracy Test ......................................... 4-33
4.3.9 Output Leakage Test
................................................ 4-37
4.3.1 0 Harmonic, Spurious, and Subharmonic Test
............................. 4-39
4.3.1 1 Modulation Tests
................................................... 4-41
4.3.12 VSWRTests
....................................................... 4-48
4.3.1 3 Pulse Tests
....................................................... 4-50
5 Maintenance
.................................................................
5.1 General 5-1
5.1.1 Cleaning
.......................................................... 5-1
5.2 Assembly Removal Procedures
.............................................. 5-2
5.2.1 Front Section
...................................................... 5-2
5.2.2 Rear Section
...................................................... 5-2
5.2.3 Synthesizer PC Assembly (A4)
........................................ 5-3
5.2.4 Output PC Assembly (A7)
............................................ 5-3
5.2.5 Attenuator Assembly (A8)
............................................ 5-3
5.2.6 VCO PC Assembly
(A5) ............................................. 5-3
5.3 Repair and Replacement
................................................... 5-4
........................................................... 5.4 Troubleshooting 5-5
...................................................
5.4.1 Special Functions 5-5
...
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Model 6062A Synthesized RF Signal Generator
5.4.2 UNCAL Conditions ..................................................
5.4.3 Self-Test Error Codes ................................................
...................................................... 5.4.4 Output Signal
5.4.5 Power Supply Voltages
..............................................
5.5 Digitaland Control Troubleshooting ...........................................
.....................................................
5.5.1 Control Activity
5.5.2 LatchControl
.......................................................
5.5.3 MicroprocessorKernel ...............................................
5.5.4 Power Reset .......................................................
5.5.5 MicroprocessorInputs ...............................................
..................................................
5.5.6 IEEE-488Interrupt
5.5.7 MicroprocessorBus
.................................................
................................................... 5.5.8 Address Decoder
................................................ 5.5.9 Displayand Controls
5.6 Synthesizer Troubleshooting
.................................................
5.6.1 ReferenceCircuitry ..................................................
5.6.2 Main Phase Lock Loop ...............................................
5.6.3 Sub-synthesizerand HET (800 MHz), 40 MHz Loop .......................
........................................................ 5.6.4 FM Circuitry
.......................................................
5.6.5 OutputLevel
5.6.6 Output Test Point Signals
............................................
5.6.7 Attenuator Level Control ..............................................
...................................................
5.6.8 AttenuatorCheck
5.6.9 UnleveledCondition .................................................
5.7 AMTroubleshooting ........................................................
......................... 5.7.1 IntemalIExtemal AM ....................... :
5.7.2 ALC Loop Control Voltage
............................................
5.7.3 RPP Control .......................................................
5.8 Software Compensation Procedures ...........................................
5.8.1 Introduction ........................................................
5.8.2 Software CompensationDescription ....................................
5.8.3 CompensationAccuracy Notes ........................................
5.8.4 Level CompensationNotes ...........................................
5.8.5 Localand Remote Compensation Adjustments ...........................
5.8.6 Initial FM CompensationAdjustments ...................................
5.8.7 FinalFM CompensationAdjustments ...................................
5.8.8 Initial Output CompensationAdjustments ................................
5.8.9 FinalOutput Compensation Adjustments ................................
5.8.1 0 InitialAttenuator CompensationAdjustments .............................
5.8.1 1 FinalAttenuator Compensation Adjustments .............................
5.8.1 2 Het CompensationAdjustment .........................................
5.8.1 3 Local CompensationProcedures .......................................
5.8.14 FM CompensationProcedure .........................................
5.8.1 5 Output Compensation Procedures ......................................
5.8.16 Attenuator Compensation Procedure ....................................
5.8.17 RemoteCompensationProcedures .....................................
5.8.1 8 Remote FM Compensation ...........................................
..........................................
5.8.1 9 Remote Level Compensation
iv
ManualNo . 794842. Rev C. May 1997
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Model 6062A Synthesized RF Signal Generator
6 Parts Lists
6.1 Introduction ..............................................................
............................................
6062A RF SIGNAL GENERATOR
6604200100 6062A CAB1NETlZlNG ASSY
.....................................
795021 PCA. DlSPLAY(A1) .................................................
797878 PCA. CONTROLLER (A2) ............................................
..................................................... 657833lEEE PCA(A3)
............................................ 812446 PCA. SYNTHESIZER (A4)
797837PCA. VCO(A5) ....................................................
797860 PCA. OUTPUT CONTROL (A6) .......................................
................................................. 797845 PCA. OUTPUT (A7)
30067ATrENUATOR ASSY
(A8) .............................................
......................................... 794982 PCA. RELAY DRIVER (A8A1)
30467 606X ATTENUATOR PCA. (A8A2) ......................................
657825 POWER SUPPLY PCA (A9) ..........................................
.......................................................
6.2 List of Manufacturers
7 Diagrams
..............................................................
7.1 Introduction
SchematicSymbols .......................................................
.................................................. Synthesizer Block Diagram
...................................................... Output Block Diagram
.................................................... InterconnectionDiagram
6062AFinalAssyDWG#6062A ..............................................
Display PC Assy (Al) PART# 795021 .........................................
Display Circuit Schematic (Al) PART# 795021 ..................................
Controller PC Assy (A2) PART# 797878 .......................................
................................ Controller CircuitSchematic (A2) PART#797878
IEEE-488 InterfacePC Assy (A3)
= PART#657833 ..............................
IEEE-488 InterfaceCircuit Schematic (A3) PART# 657833 ........................
Synthesizer PC Assy (A4) PART# 812446 .....................................
Synthesizer Circuit Schematic (A4) PART#812446 ..............................
........................................... VCO PC Assy (AS) PART# 797837
.................................... VCO Circuit Schematic (AS) PART# 797837
................................... Output Control PC Assy (A6) PART#797860
Output ControlCircuit Schematic (A6) PART# 797860
............................
......................................... Output PC Assy (A7) PART# 797845
.................................. Output Circuit Schematic (A7) PART# 797845
Relay Driver PC Assy (A8A1) PART# 794982
...................................
........................... Relay Driver Circuit Schematic (A8A1) PART# 794982
606X Attenuator PC Assy and Circuit Schematic (A8A2) ..........................
Power Supply PC Assy (A9) PART# 657825 ....................................
Power Supply Circuit Schematic (A9) PART# 657825 ............................
606X Option 130 PC Assy and Circuit Schematic, DWG# 6602201100and 660BS01100
Auxiliary Power Supply for High-StabilityReference (Option 130) PART# 731364 and
Schematic DWG# 6060A-1032
...............................................
Medium-Stability Reference (Option 132) PART# 792747 and Schematic DWG#
6060B-10 34 ..............................................................
ManualNo . 794842. RevC. May 1997 v
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Model 6062A Synthesized RF Signal Generator
A Options
A.l Introduction ............................................................... A-1
A.2 Option-130 - High-Stability Reference ........................................ A-2
A.2.1 Introduction
........................................................ A-2
A.2.2 Operation
......................................................... A-2
A.2.3 Circuit Description
................................................... A-2
A.2.4 Adjustments
....................................................... A-2
A.2.5 Option-1
30 Parts Lists ............................................... A4
A.3 Option-1
32 - Medium-Stability Reference ..................................... A-6
A.3.1 Introduction
........................................................ A-6
A.3.2 Operation
......................................................... A-6
A.3.3 Circuit Description
................................................... A-6
A.3.4 Adjustment
........................................................ A-6
A.3.5 Option -132 Parts Lists
............................................... A-7
A.4 Option -830
- Rear PanelRF Output & Mod Input .............................. A-8
A.4.1 Introduction
........................................................ A-8
A.4.2 Operation
......................................................... A-8
A.4.3 Circuit Description
................................................... A-8
A.4.4 Maintenance
....................................................... A-8
A.4.5 PartsList
.......................................................... A-8
A.5 Option Y6001
- Rack Mount with Slides ....................................... A-9
A.6 OptionY6002
- Rack Mount without Slides .................................... A-9
A.7 OptionA011-Carlyingcase
............................................... A-9
Index
........................................................................ Index-1
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Model 60624 Synthesized RF Signal Generator
List of Figures .
Figure 2-1
Figure 2-2
Figure 2-3
Figure 2-4
Figure 2-5
Figure 2-6
Figure 3-1
Figure 3-2
Figure 3-3
Figure 4-1
Figure 4-2
Figure 4-3
Figure 4-4
Figure 4-5
Figure 4-6
Figure 4-7
Figure 4-8
Figure 4-9
Figure 4-10
Figure 4-11
Figure 4-12
Figure 4-13
Figure 4-14
Figure 4-15
Figure 4-16
Figure 4-17
Figure 4-18
Figure 4-19
Figure 4-20
Figure 4-21
Figure 4-22
Figure 4-23
Figure 4-24
Figure 4-25
Figure 4-26
Figure 4-27
Figure 4-28
Figure 4-29
Figure 4-30
Figure 4-31
Figure 4-32
Figure 5-1
Figure 5-2
Figure 5-3
Figure 5-4
Figure 5-5
............................................ The Rear Panel
Power Line Connection
......................................
Voltage Selection and Fuse Requirements .....................
VDE Voltage Selector & Fuse Holder .........................
Front Panel Controls & Connectors ...........................
Learn String Example .......................................
Triple-Modulus Prescaler Operation ...........................
N-Divider Operation .........................................
N-Divider Timing Diagram ...................................
Power Supply Test Points .................................
External Modulation Level Adjustment ........................
Module Plate. Top View .....................................
....................
10 MHz Reference Frequency Adjustment
FMAdjustments ............................................
Notch Filter Adjustments ....................................
VCO Voltage-Clamp & 800 MHz Oscillator .....................
External Modulation Level Adjustment ........................
10 MHz Lock-Range Centering Adjustment ....................
.................................. Module Plate. Bottom View
Level DAC Offset Adjustment
................................
AM DAC Offset Adjustment ..................................
Modulation Oscillator Level Adjustment .......................
............................ External PM Deviation Adjustment
Internal PM Deviation Adjustment
............................
Detector Offset Adjustment ..................................
AM Depth Adjustment .......................................
RF Level Adjustment ........................................
Het Level Adjustment .......................................
Frequency Accuracy Test ....................................
Synthesis Test Setup .......................................
High-Level Accuracy Test Setup ..............................
Mid-Level Accuracy Test Setup ..............................
Low-Level Accuracy Test Setup ..............................
Alternate-Level Accuracy Equipment Setup ....................
Low-Level Setup Above 1300 MHz (a) ........................
Low-Level Setup Above 1300 MHz (b) ........................
Two-Turn Loop .............................................
Output Leakage Test ........................................
AM Tests Setup ...........................................
FM Tests Setup ............................................
VSWR Tests ...............................................
Self-Test Error Code Display .................................
Compensation Memory Status Display ........................
Sample FM Compensation Display ............................
Sample Output Compensation Display ........................
Sample Attenuator Compensation Display .....................
ManualNo . 794842. Rev C. May 1997
vii
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