Wiltron 6747B Manuals

Manuals and User Guides for Wiltron 6747B. We have 1 Wiltron 6747B manual available for free PDF download: Maintenance Manual

Wiltron 6747B Maintenance Manual

Wiltron 6747B Maintenance Manual (503 pages)

SWEPT FREQUENCY SYNTHESIZER

Brand: Wiltron | Category: Test Equipment | Size: 80 MB

Table of Contents

Section I General Information

6
- Table of Contents
  6
- Identification Number
  8
- Related Manuals
  8
- Scope of the Manual
  8
- Description
  8
- Introduction
  8
- Options
  9
- Recommended Test Equipment
  13
Section 2

14
- 2H- 1 Introduction
  19
- Analog Instruction (al 7 PCB)
  24
- Circuit Subsystems
  24
- Frequency Synthesis Subsystem-RF Casting
  24
- Front Panel Assembly (al and A2 Pcbs)
  24
- Inputs/Outputs CA27 PCB and P/O A2 9 PCB)
  24
- Pcbs)
  24
- 2-3.9 RF Microwave Deck
  25
- Motherboard/Interconnections
  25
- Pcb)
  25
- Frequency Sy Nthesis Circuits, Functional Description 2-1
  26
- FM Modulation
  27
- RF Outputs 0.0 1 to 60 Ghz
  27
- Sweep Mode of Operation
  27
- Alc and Modulation Circuits, Functional Description
  28
- ALC Loop Operation
  28
- 2-5.2 A13 Pulse Generator PCB Operation
  29
- 2-6.3 Error Codes
  36
- Hidden-Key Routines
  36
- System Troubleshooting
  36
- Troubleshooting Faults that Do Not Produce Error Codes
  36
- Power Supply
  55
- Power Supply Assemblies, Overall Description
  55
- 3.1 AC Line and +24V Standby Power Supply Circuits
  56
- Detailed Circuit Description
  56
- Power Supply Assemblies, Detailed Description
  56
- 3.3 A25 Switching Power Supply PCB, Detailed Circuit Description
  59
- 3.4 A22 Regulator Interface PCB, Detailed Circuit Description
  61
- Power Supply (A2 2, A2 5 , A26 Pcbs and P/O A2 8 PCB)
  62
- Power Supply Assemblies, Service Sheets
  62
- Power Supply Assemblies, Troubleshooting
  62
- Digital Control Assemblies, Overall Description
  84
- 6. 3 Shift Registers
  93
- As Serial 1/0 Pcb, Detailed Circuit Description
  93
- Multiplexers
  93
- 6. 6 Serial Data Input
  94
- Ground Return Multiplexer
  94
- Digital Control Assemblies, Troubleshooting
  95
- S Digital Control Assemblies, Service Sheets
  95
- Front Panel Assemblies, Overall Description
  112
- FRONT PANEL ASSEMBLIES: al and A2 Pcbs
  112
- . 2 A2 Front Panel Control PCB, General Description
  113
- 3.L Line Switch and Power on Circuits
  113
- Front Panel Keys
  113
- . 2 Internal Parallel Data Bus
  115
- . 5 Knob Amplifier
  115
- A2 Front Panel Control Pcb, Detailed Circuit Description
  115
- Display Message Data Latches
  115
- Keyboard Encoder, Interrupt and Output Circuits
  115
- Inputs/Outputs Assemblies , Overall Description
  137
- . L Digital Control Circuits
  138
- A27 Auxillary Vo Pcb , Detailed Circuit Descripi'ion
  138
- A29 Rear Panel Interface Pcb, Detailed Circuit Description
  138
- Microprocessor Interface Circuits
  138
- External Instrument Interface Circuits
  139
- ALC Loop VO Interface Circuits
  140
- Inputs/Outputs Assemblies , Service Sheets 2
  140
- Inputs/Outputs Assemblies, Troubleshooting
  140
- Lov Horiz Output Signal Circuits
  140
- PIN Switch Drivers
  140
- Step Attenuator and Relay Drivers
  140
- Reference Loop
  159
- Reference Loop Assemblies, Overall Description
  159
- REFERENCE LOOP ASSEMBLIES: A5 , A7 , Alo Pcbs and CRY STAL OSCILLATOR
  159
- A5 Reference Oscillator , Detailed Circuit Description
  160
- A7 Reference Divider, Detailed Circuit Description
  160
- Buffer Amplifiers
  160
- Loop Amplifier
  160
- Reference Loop Oscillator
  160
- . L 500 Mhz Input
  161
- Divide -By -Five
  161
- External 10 Mhz Input Circuit
  161
- Internal 10 Mhz Input Circuit
  161
- Phase/Frequency Detector
  161
- Alo REFERENCE BUFFER, DETAILED CIRCUIT DESCRIPTION
  162
- Buffer Amplifiers
  162
- Input
  162
- Reference Loop Assemblies, Service Sheets
  162
- Reference Loop Assemblies, Troubleshooting
  162
- 2F-Coarse Loop
  177
- Coarse Loop Assemblies, Overall Description
  177
- COARSE LOOP ASSEMBLIES: A3 , A4 , and A6 Pcbs
  177
- . 1 Input Amplifier
  178
- . 1 Local Oscillator (LO) Input
  178
- . 2 Loop Amplifier
  178
- 2F-3.2
  178
- 4 0-4 90 Mhz RF Input
  178
- A3 Coarse Loop M Ixer, Detailed Circuit Description
  178
- Buffer Amplifiers
  181
- .3 Coarse Loop Counter Chain Operation
  182
- 10 Mhz Reference Input
  183
- Coarse Loop Assemblies, Service Sheets
  184
- Coarse Loop Assemblies, Troubleshooting
  184
- Notch Filters
  184
- Fine Loop Assemblies, Overall Description
  201
- FINE LOOP ASSEMBLIES: A9 and All Pcbs
  201
- 2G-3.1 Loop Amplifier
  202
- 2G-3.2 Linearizer
  202
- 2G-3.3 Voltage-Controlled Oscillator
  202
- 2G-3.4 Output Amplifiers
  202
- A9 Fine Loop Oscillator, Detailed Circuit Description
  202
- . 1 10 Mhz Input Circuit
  203
- . 2 200-3 21 Mhz Fine Loop Input
  203
- All FINE LOOP DIVIDER, DETAILED CIRCUIT DESCRIPTION
  203
- Counter Circuits
  203
- Phase/Frequency Detector
  203
- Serial Input Circuits
  203
- . 6 Notch Filters
  204
- Fine Loop Assemblies, Service Sheets
  204
- Fine Loop Assemblies, Troubleshooting
  204
- Analog Instruction Assembly, Overall Description
  251
- Analog Instruction Assembly: A17 Pcb
  251
- 21-3.1 Microprocessor Bus Interface and Internal Data Bus
  252
- 21-3.2 Ramp Generator
  253
- Frequency Instruction
  256
- Power Meter
  258
- Analog Instruction Assembly, Service Sheets
  260
- Analog Instruction Assembly, Troubleshooting
  260
- 2.2 FM Coil Driver Circuits
  273
- 2J-2.1 A18-A21 YIG Driver PCB Addressing
  273
- Introduction
  273
- .4 Bias Supply Driver Circuits
  274
- 2.3 Main Tuning Coil Driver Circuits
  274
- YIG DRIVER Pcbs SERVICE SHEETS
  275
- YIG DRIVER Pcbs TROUBLESHOOTING
  275
- 2K-Alc/Pulse Modulation
  286
- Overview of ALC Loop Operation
  286
- A 15 ALC PCB Functional Description 2
  290
- Detector Preamplifiers 2
  290
- External ALC Level Circuits 2
  290
- ALC Comparator and Sample/Hold Circuits 2
  293
- Detector Shaper Circuit
  293
- External ALC Gain Cal
  293
- . 1 2 Detector Thermistor Circuits
  294
- . Ll Unleveled Logic Circuits
  294
- A 13 Pulse Generator Pcb Circuit Description
  295
- Pulse Generator Circuits
  295
- 3.2 Source/Mode Select Control Circuits
  296
- 3.4 A13 PCB Processor Interface Circuits
  297
- A29 Rear Panel Interface Pcb Circuits Description
  297
- ALC Control Signal Drive Circuits
  297
- Pulse Modulation PIN Drivers
  297
- V/GHZ DAC Circuits
  297
- 5.1 Control Modulators
  300
- 5.2 Switched Filter Module
  300
- Alc Loop Rf Microwave Dec K Components
  300
- Alc Pulse Modulation Subsystem Schematics
  300
- Directional Coupler
  300
- Main Mux Switch
  300
- Rf Microwave Deck Assembly, Overall Description
  333
- Down Converter
  337
- Frequency Band 5, Circuit Description
  337
- Frequency Doubler/Amplifier/Modulator
  337
- RF Output
  337
- Switched Filter
  337
- Frequency Band 6, Circuit Description
  338
- RF Output
  338
- Rf Microwave Deck Assembly, Service Sheets
  339
- Rf Microwave Deck Assembly, Troubleshooting
  339
- . 1 Motherboard/Interconnect Circuits Description
  347
- Introduction
  347
- RF Casting Coaxial Cables
  348
- RF Microwave Deck Interconnections
  348
- Wiring Harnesses/Ribbon Cables
  348

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