Tektronix VM700 Manuals

Tektronix VM700 Manuals

Manuals and User Guides for Tektronix VM700. We have 1 Tektronix VM700 manual available for free PDF download: Service Manual

Tektronix VM700 Service Manual

Tektronix VM700 Service Manual (355 pages)

Video Measurement Set

Brand: Tektronix | Category: Measuring Instruments | Size: 6 MB

Table of Contents

Service Manual

3
- Table of Contents
  3
List of Tables

13
- General Safety Summary
  17
- Service Safety Summary
  19
- Contents of the Manual
  20
- Preface
  20
- Electrical Characteristics
  21
- Specification
  21
- Table 1- 1: Input Characteristics
  21
- Table 1- 2: Digitizer
  22
- Table 1- 3: Synchronization
  23
- Environmental
  24
- Physical Characteristics
  24
- Power Requirements
  24
- Table 1- 4: Physical Characteristics
  24
- Table 1- 6: Environmental Specification
  24
- Table 1- 7: Certifications and Compliances
  26
- Table 1- 8: Safety Standards
  27
- Table 1- 9: Safety Certification Compliance
  27
- Table 1- 10: Rear Panel Signal Connectors
  28
- Table 1- 11: Optional Power Cords
  29
- Power Line Conditioner for Option A1 and A2 Power Cords
  30
- Table 1- 12: AC Electrical Characteristics
  30
- Measure Mode
  32
- PAL Measurement Specifications
  32
- Table 1- 15: Bar Line Time
  32
- Table 1- 16: Bounce
  32
- Table 1- 17: Burst Frequency
  33
- Table 1- 18: Chrominance to Luminance
  33
- Table 1- 19: Chrominance Noise
  33
- Table 1- 20: Chrominance Nonlinearity
  33
- Table 1- 21: Color Bar
  33
- Table 1- 22: Differential Gain and Phase
  34
- Table 1- 23: Frequency Response and Group Delay
  34
- Table 1- 24: Horizontal Blanking
  34
- Table 1- 25: Horizontal Timing
  34
- Table 1- 26: Incidental Carrier Phase Modulation
  35
- Table 1- 27: Jitter
  35
- Table 1- 28: K-Factor
  35
- Table 1- 29: Level Meter
  35
- Table 1- 30: Line Frequency
  35
- Table 1- 31: Luminance Nonlinearity
  35
- Table 1- 32: Multiburst
  36
- Table 1- 33: Noise Spectrum
  36
- Table 1- 34: SCH Phase
  36
- Table 1- 35: Two Field
  36
- Table 1- 36: Vertical Blanking
  36
- Auto Mode
  37
- Table 1- -37: VITS
  37
- Measure Mode
  41
- NTSC Measurement Specifications
  41
- Auto Mode
  46
- Audio Option 40, Option 41, and Option 42 Specifications
  51
- Automatic Audio Test Specifications
  51
- Audio Analyzer Specifications
  52
- Audio Spectrum Specifications
  54
- Multitone Analyzer Specifications
  55
- A/V Timing Specifications (Option 42)
  56
- Option 48 GPIB Specification
  56
- Table 1- -5: Power Requirements
  57
- Option 1S SDI Specification
  58
- Installation
  65
- Operating Information
  65
- Power Requirements
  65
- Unpackaging
  65
- Changing Line Voltage Range and Fuse
  66
- Power Cord
  66
- Figure 2- 1: Power Line Conditioner with a Rackmounted VM700T
  67
- Installing the Power Line Conditioner
  67
- Calibrating the Touch Screen
  68
- Power on Diagnostics
  68
- Figure 2- 2: VM700T Startup Menu
  69
- Figure 2- 3: Touch Screen Calibration (Display)
  70
- Figure 2- 6: Diagnostic Configuration Menu
  71
- Setting the Power on Mode
  71
- Figure 2- 7: Set Diagnostics Power up Mode Menu
  72
- Measurement Set Operating Modes
  72
- Waveform Mode
  72
- Auto Mode
  73
- Measure Mode
  73
- Picture Mode
  73
- Vector Mode
  73
- Hardcopy
  74
- Remote Operation
  74
- User-Programmable Functions
  74
- VM700T Video Measurement Set Service Manual
  74
- Figure 2- 8: the VM700T Video Measurement Set Front Panel
  75
- Front Panel Controls
  75
- Touch Screen
  75
- Figure 2- 9: Measurement Set Keypad
  76
- Keypad
  76
- Bandwidth
  79
- Connecting Inputs and Outputs
  79
- Control Knob
  79
- Equipment/Signal Sources Required
  79
- Figure 2- 10: VM700T Video Measurement Set Rear Panel
  80
- Rear Panel and Connections
  80
- Equipment/Video Signal Sources Required
  82
- Figure 2- 11: Video Signal Input Connectors
  82
- Connecting Audio Option 40 to a Source
  83
- Figure 2- 12: Cables and Connectors Supplied with Audio Option 40
  83
- Figure 2- 13: Option 40 Connectors and Pin Assignments
  83
- Input Connector Pin Assignments
  83
- Connecting Audio Option 41 to a Source
  84
- Option 41 Audio Signal Interconnection Cable
  84
- Figure 2- 15: GPIB Board Rear Panel
  85
- GPIB Indicator LED
  85
- GPIB Option 48 Signal Connections and Rear Panel
  85
- SDI Option 1S Rear Panel Connections
  86
- Figure 2- 16: VM700T Rear Panel with Option 1S Installed
  87
- Figure 2- 17: Option 1S Rear Panel
  87
- Overview of the VM700T System
  89
- Theory of Operation
  89
- Analog Input Board (A1)
  91
- Channel Selection
  91
- Clamp and Bias Generator
  91
- Clamped Input Amplifiers
  91
- Loop-Through Inputs
  91
- Mode Control
  91
- Module Functional Description
  91
- Figure 3- 1: Analog Input Board (A1) Block Diagram
  92
- Calibration DAC
  93
- Differential Amplifier
  93
- Dither Generator and Dither Amplifier
  93
- Dynamic Offset Generator and Offset Amplifier
  93
- Variable-Gain Amplifier
  93
- DVM Selection and DVM
  94
- Sync Selection
  94
- The Genlock Board (A2)
  95
- Figure 3- 2: Genlock Board (A2) Block Diagram
  96
- Sync Stripper
  96
- FH Generator
  97
- Frame Decoder
  97
- Frame Rate Synthesizer
  97
- Phase-Locked Loop (PLL)
  97
- Stripped Sync Processing
  97
- Control
  98
- Output Generator
  98
- Status
  98
- Figure 3- 3: ADC Board Block Diagram
  100
- Overrange Detector
  101
- Sample Clock
  101
- Filter Switch Board (A4)
  102
- Figure 3- 4: Filter Switch Board (A4) Block Diagram
  103
- Filter Select and Control
  103
- CPU Board (A5)
  104
- Figure 3- 5: CPU Board Block Diagram
  104
- System Bus
  104
- Display ASIC and VRAM
  105
- Dram
  105
- Eprom
  105
- Flash EPROM
  105
- Nvram
  105
- Nvram Simm
  105
- Real-Time Clock
  105
- Connector
  106
- CPU I/O Board (A20)
  106
- Figure 3- 6: CPU I/O Board Block Diagram
  106
- Front Panel Processor
  106
- Parallel Port Interface
  106
- Serial Ports
  106
- Data Acquisition/Controller Board (A18)
  108
- Fifo/Demultiplexor
  108
- Acquisition Clock
  109
- Acquisition Control
  109
- Data Bus Interface
  109
- Figure 3- 7: Acquisition Circuitry Block Diagram
  109
- Bus Buffers
  110
- Controller Section
  110
- Clamp Counters
  111
- Controller ASIC
  111
- Figure 3- 8: Controller Section Block Diagram
  111
- Output Latches and Analog Input Board Interface
  111
- Data and Address Latches Onto the BCD0-12 Bus
  112
- ECL-To-TTL Conversion
  112
- Sequencer (State Machine)
  112
- Status Counter
  112
- Trigger RAM
  112
- Dynamic Settings
  113
- Figure 3- 9: Dither Generator 64-Step Dither Waveform
  114
- Figure 3- 10: Front Panel Board Block Diagram
  115
- Front Panel Board (A10A1)
  115
- Control Knob
  116
- Figure 3- 11: Keypad Board (A10A2) Block Diagram
  116
- Keypad Board (A10A2)
  116
- Leds
  116
- Push Buttons
  116
- +12 V and + 5 V Supplies
  117
- Main Interconnect Board (Left and Right) (A11)
  117
- Picture Monitor (A14)
  117
- Vertical Deflection
  117
- Video Amplifier
  117
- Figure 3- 12: Picture Monitor Simplified Block Diagram
  118
- Horizontal Deflection
  118
- High Voltage
  119
- Housekeeping Power Supply
  119
- Input Power Rectifier
  119
- Inverter Switching Circuit
  119
- Power Supply (A15)
  119
- Trace Rotation
  119
- +12 V and 15 V Regulators
  120
- Figure 3- 13: Simplified Block Diagram of the Power Supply
  120
- Alarm Logic
  121
- Alarm Sensing
  121
- Audio Processor Board (A12)
  121
- Fan Drive
  121
- Option 40 Audio Measurements
  121
- Address Buffers
  122
- Address Decoders
  122
- Audio Processor Interface
  122
- Bus Buffers
  122
- Figure 3- 14: Audio Processor Block Diagram
  122
- Communication Ports
  123
- Data Buffers
  123
- DSP Processor and I/O Interface
  123
- Interrupt Generator
  123
- Interrupt Generator/Status Port
  123
- Oscillator
  123
- Reset Register
  123
- Audio Data Register
  124
- Control Lines
  124
- CPU Access Disable
  124
- P Memory
  124
- Program Loading
  124
- Static RAM
  124
- Audio Analog Board (A13)
  125
- Input Amplifier
  125
- Input Amplifiers
  125
- Signal Input
  125
- Stepped Attenuator
  125
- Figure 3- 15: Audio Analog Block Diagram
  126
- 400 Hz Notch Filter/Dac Output
  127
- DAC Output
  127
- Notch Filter Operation
  127
- Audio Board Control
  128
- CH 2 (and CH 1) Amplifier
  128
- Input Clamp
  128
- Option 40 A/D Converter
  128
- Opto-Isolators
  128
- Control Register
  129
- Counter/Decoder
  129
- Balanced Input Selector
  130
- Calibration DAC
  130
- Floating Power Supply
  130
- Option 41 Audio Analog Board
  130
- Figure 3- 16: Audio Analog Block Diagram
  131
- Figure 3- 17: GPIB Board Location in the Measurement Set
  132
- Option 48 GPIB Interface Board (A19)
  132
- Figure 3- 18: Block Diagram of the GPIB Interface Option Board
  133
- Figure 3- 19: GPIB Rear Panel Arrangement
  134
- Option 1S Serial Digital Measurements
  135
- SDI Board
  135
- SDI Rear Panel Interface Assembly
  135
- Figure 3- 20: Option 1S Block Diagram
  136
- Performance Verification
  139
- Self Diagnostics
  139
- Test Equipment Required
  144
- System Verification Procedures
  145
- Audio Option Verification Procedure
  151
- Test Equipment Required
  151
- Audio Option 40 Verification Procedure
  153
- Check Level Measurement Accuracy and Flatness
  153
- Option 40 Level Accuracy and Flatness
  153
- Specifications Checked
  153
- Check Distortion and Distortion Measurement Accuracy
  155
- Option 40 Distortion Measurement Accuracy
  155
- Specification Checked
  155
- Check Frequency and Phase Measurement Accuracy
  156
- Option 40 Frequency Accuracy and Channel Phase Difference
  156
- Specifications Checked
  156
- Audio Option 41 Triple-Input Verification Procedure
  157
- Configuring Source Selection Audio
  157
- Check Level Measurement Accuracy and Flatness
  158
- Option 41 Level Accuracy and Flatness
  158
- Check Distortion and Distortion Measurement Accuracy
  160
- Option 41 Distortion Measurement Accuracy
  160
- Check Frequency and Phase Measurement Accuracy
  161
- Option 41 Frequency Accuracy and Channel Phase Difference
  161
- SDI Option 1S Performance Verification
  163
- Preliminary Setup
  164
- SDI Analog Ref Input
  165
- Eye Diagram Application
  166
- Jitter Application
  168
- Interchannel Timing Application
  172
- SDI Output
  173
- VM700T Video Measurement Set Service Manual
  184
- Figure 2- -4: Touch Screen Calibration (Panel)
  187
- Figure 2- -5: Panel Calibration Values
  187
- VM700T Video Measurement Set Service Manual
  194

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