Tektronix VM700T User manual

Service Manual
VM700T
Video Measurement Set
070-9630-05
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com

Copyright ©Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship
for a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, Tektronix,
at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in
exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR
IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO
REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO
THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE
LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE
OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.

VM700T Video Measurement Set Service Manual i
Table of Contents
General Safety Summary xv..........................................
Service Safety Summary xvii..........................................
Preface xix...................................................
Contents of the Manual xix...........................................
Contacting Tektronix xx.............................................
Specification
Electrical Characteristics 1--1..........................................
Physical Characteristics 1--4...........................................
Power Requirements 1--4..............................................
Environmental 1--4..................................................
Power Line Conditioner for Option A1 and A2 Power Cords 1--10..............
PAL Measurement Specifications 1--12...................................
Measure Mode 1--12..................................................
Auto Mode 1--17.....................................................
NTSC Measurement Specifications 1--21..................................
Measure Mode 1--21..................................................
Auto Mode 1--26.....................................................
Audio Option 40, Option 41, and Option 42 Specifications 1--31...............
Automatic Audio Test Specifications 1--31.................................
Audio Analyzer Specifications 1--32......................................
Audio Spectrum Specifications 1--34.....................................
Multitone Analyzer Specifications 1--35...................................
A/V Timing Specifications (Option 42) 1--36...............................
Option 48 GPIB Specification 1--36......................................
Option 1S SDI Specification 1--38.......................................
Operating Information
Installation 2--1.....................................................
Unpackaging 2--1................................................
Power Requirements 2--1..........................................
Changing Line Voltage Range and Fuse 2--2...........................
Power Cord 2--2.................................................
Power Line Conditioner Accessory 2--2...............................
Installing the Power Line Conditioner 2--3............................
Power On Diagnostics 2--4.........................................
Calibrating the Touch Screen 2--5...................................
Setting the Power On Mode 2--7....................................
Measurement Set Operating Modes 2--8..................................
Waveform Mode 2--8.............................................
Vector Mode 2--9................................................
Measure Mode 2--9...............................................
Picture Mode 2--9................................................
Auto Mode 2--9..................................................
User-Programmable Functions 2--10......................................
Hardcopy 2--10.......................................................
Remote Operation 2--10................................................

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ii VM700T Video Measurement Set Service Manual
Front Panel Controls 2--11..............................................
Touch Screen 2--11................................................
Keypad 2--12.....................................................
Control Knob 2--14................................................
Equipment/Signal Sources Required 2--15..............................
Bandwidth 2--15..................................................
Connecting Inputs and Outputs 2--15..................................
Rear Panel and Connections 2--16........................................
Equipment/Video Signal Sources Required 2--18............................
Connecting Audio Option 40 to a Source 2--19.............................
Input Connector Pin Assignments 2--19................................
Connecting Audio Option 41 to a Source 2--20.............................
Option 41 Audio Signal Interconnection Cable 2--20.....................
GPIB Option 48 Signal Connections and Rear Panel 2--21....................
GPIB Indicator LED 2--21..........................................
SDI Option 1S Rear Panel Connections 2--22...............................
Theory of Operation
Overview of The VM700T System 3--1..................................
Module Functional Description 3--3.....................................
Analog Input Board (A1) 3--3..........................................
Loop-Through Inputs 3--3..........................................
Mode Control 3--3................................................
Clamped Input Amplifiers 3--3......................................
Clamp and Bias Generator 3--3.....................................
Channel Selection 3--3............................................
Differential Amplifier 3--5.........................................
Dynamic Offset Generator and Offset Amplifier 3--5....................
Variable-Gain Amplifier 3--5.......................................
Dither Generator and Dither Amplifier 3--5............................
Calibration DAC 3--5.............................................
Sync Selection 3--6...............................................
DVM Selection and DVM 3--6......................................
The Genlock Board (A2) 3--7..........................................
Sync Stripper 3--7................................................
Crystal Oscillator 3--7.............................................
FH Generator 3--9................................................
Phase-Locked Loop (PLL) 3--9.....................................
Divide-by-2 Frequency Divider 3--9.................................
Frame Decoder 3--9..............................................
Frame Rate Synthesizer 3--9........................................
Stripped Sync Processing 3--9......................................
Output Generator 3--10.............................................
Control 3--10.....................................................
Status 3--10......................................................

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VM700T Video Measurement Set Service Manual iii
The Analog-to-Digital (ADC) Board (A3) 3--11.............................
+2.5 V and --2.5 V Regulators 3--11...................................
Signal Conditioning Amplifier 3--11..................................
A/D Converter 3--11...............................................
Buffer 3--11......................................................
Output Latch 3--11................................................
Line and Frame Pulse Pipeline 3--13..................................
Overrange Detector 3--13...........................................
Sample Clock 3--13...............................................
Filter Switch Board (A4) 3--14..........................................
Filter Select and Control 3--14.......................................
Slot 0 3--14......................................................
Slots 1-5 3--14....................................................
Output Amplifier 3--14.............................................
CPU Board (A5) 3--16.................................................
System Bus 3--16.................................................
EPROM 3--17....................................................
NVRAM 3--17...................................................
NVRAM SIMM 3--17..............................................
Flash EPROM 3--17...............................................
DRAM 3--17.....................................................
Real-Time Clock 3--17.............................................
Display ASIC and VRAM 3--17......................................
Front Panel Processor 3--18.........................................
CPU I/O Board (A20) 3--18.............................................
Serial Ports 3--18..................................................
Parallel Port Interface 3--19.........................................
32-Bit Counter 3--19...............................................
Connector 3--19..................................................
Data Acquisition/Controller Board (A18) 3--20.............................
Video Data and Clock Inputs 3--20...................................
FIFO/Demultiplexor 3--20..........................................
Acquisition Control 3--20...........................................
Acquisition Clock 3--20............................................
Data Bus Interface 3--20............................................
Data Acquisition Memory (Static RAM) 3--20..........................
Min-Max ASIC 3--20..............................................
Controller Section 3--22............................................
Bus Buffers 3--22.................................................
Controller ASIC 3--22..............................................
Address Decoding 3--22............................................
Output Latches and Analog Input Board Interface 3--22...................
Clamp Counters 3--22..............................................
Status Counter 3--24...............................................
ECL-To-TTL Conversion 3--24......................................
Data and Address Latches onto the BCD0-12 Bus 3--24...................
Trigger RAM 3--24................................................
Sequencer (State Machine) 3--24.....................................
Dynamic Settings 3--25............................................
Front Panel Board (A10A1) 3--27........................................

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iv VM700T Video Measurement Set Service Manual
Keypad Board (A10A2) 3--28...........................................
Control Knob 3--28................................................
Push Buttons 3--28................................................
LEDs 3--28......................................................
Main Interconnect Board (Left and Right) (A11) 3--29.......................
Picture Monitor (A14) 3--29............................................
Video Amplifier 3--29..............................................
+12Vand+5VSupplies 3--29......................................
Vertical Deflection 3--29............................................
Horizontal Deflection 3--30.........................................
High Voltage 3--31................................................
Trace Rotation 3--31...............................................
Power Supply (A15) 3--31..............................................
Input Power Rectifier 3--31.........................................
Housekeeping Power Supply 3--31....................................
Inverter Switching Circuit 3--31......................................
+12 V and 15 V Regulators 3--32.....................................
Alarm Sensing 3--33...............................................
Alarm Logic 3--33................................................
Fan Drive 3--33...................................................
Option 40 Audio Measurements 3--33.....................................
Audio Processor Board (A12) 3--33......................................
Audio Processor Interface 3--34.........................................
Address Decoders 3--34............................................
Bus Buffers 3--34.................................................
Address Buffers 3--34.............................................
Interrupt Generator/Status Port 3--35.....................................
Interrupt Generator 3--35...........................................
Data Buffers 3--35.................................................
Reset Register 3--35...............................................
DSP Processor and I/O Interface 3--35....................................
Oscillator 3--35...................................................
Communication Ports 3--35.........................................
Audio Data Register 3--36..............................................
CPU Access Disable 3--36..........................................
Static RAM 3--36.....................................................
P Memory 3--36..................................................
X-Data and Y-Data Memory 3--36....................................
Program Loading 3--36.............................................
Control Lines 3--36................................................
Audio Analog Board (A13) 3--37........................................
Input Amplifiers 3--37.............................................
Signal Input 3--37.................................................
Stepped Attenuator 3--37...........................................
Input Amplifier 3--37..............................................
400 Hz Notch Filter/DAC Output 3--39...................................
Notch Filter Operation 3--39........................................
DAC Output 3--39.................................................
Option 40 A/D Converter 3--40..........................................
Input Clamp 3--40.................................................
CH 2 (and CH 1) Amplifier 3--40.....................................
A/D Converter 3--40...............................................

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VM700T Video Measurement Set Service Manual v
Audio Board Control 3--40.............................................
Opto-Isolators 3--40...............................................
Synchronizer 3--41................................................
Counter/Decoder 3--41.............................................
Control Register 3--41.............................................
Master Oscillator and Clock Divider 3--41.............................
Calibration DAC 3--42.............................................
Floating Power Supply 3--42............................................
Grounds 3--42....................................................
Option41AudioAnalogBoard 3--42.....................................
6 Balanced Input Selector 3--42......................................
Option 48 GPIB Interface Board (A19) 3--44...............................
Option 1S Serial Digital Measurements 3--47...............................
SDI Rear Panel Interface Assembly 3--47..............................
SDI Board 3--47..................................................
Performance Verification
Self Diagnostics 4--1.................................................
Test Equipment Required 4--6..........................................
System Verification Procedures 4--7.....................................
Audio Option Verification Procedure 4--13.........................
Test Equipment Required 4--13..........................................
Audio Option 40 Verification Procedure 4--15.......................
Check Level Measurement Accuracy and Flatness 4--15......................
Specifications Checked 4--15........................................
Option 40 Level Accuracy and Flatness 4--15...........................
Check Distortion and Distortion Measurement Accuracy 4--17.................
Specification Checked 4--17.........................................
Option 40 Distortion Measurement Accuracy 4--17......................
Check Frequency and Phase Measurement Accuracy 4--18....................
Specifications Checked 4--18........................................
Option 40 Frequency Accuracy and Channel Phase Difference 4--18.........
Audio Option 41 Triple-Input Verification Procedure 4--19............
Configuring Source Selection Audio 4--19.................................
Check Level Measurement Accuracy and Flatness 4--20......................
Option 41 Level Accuracy and Flatness 4--20...........................
Check Distortion and Distortion Measurement Accuracy 4--22.................
Option 41 Distortion Measurement Accuracy 4--22......................
Check Frequency and Phase Measurement Accuracy 4--23....................
Option 41 Frequency Accuracy and Channel Phase Difference 4--23.........
SDI Option 1S Performance Verification 4--25......................
Preliminary Setup 4--26................................................
SDI Analog Ref Input 4--27.............................................
Eye Diagram Application 4--28..........................................
Jitter Application 4--30................................................
Interchannel Timing Application 4--34....................................
SDI Output 4--35.....................................................

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vi VM700T Video Measurement Set Service Manual
Adjustment Procedure
Test Equipment Required 5--1..........................................
System Adjustment Procedures 5--2.....................................
Extended Adjustment Procedure 5--15....................................
Option 1S Adjustment Procedure 5--22....................................
Maintenance
Servicing Preparation 6--1.............................................
Inspection and Cleaning 6--4...........................................
Repackaging the Instrument 6--5........................................
Repackaging 6--5................................................
Removal and Replacement Instructions 6--6...............................
VM700T Rack Mounting Instructions 6--44................................
Troubleshooting Procedures 6--49.................................
Troubleshooting Techniques 6--50........................................
Isolating Operational Faults 6--51........................................
Diagnostics 6--55.....................................................
Troubleshooting the Power Supply and CRT Display 6--90....................
Troubleshooting Option 40 and Option 41 (Audio) 6--95......................
Troubleshooting Option 48 (GPIB) 6--99..................................
Troubleshooting Option 1S (SDI) 6--100...................................
SDI Option Diagnostics 6--104...........................................
Options
Standard Options (Option 01 and Option 11) 7--1...........................
Application Options (Option 1G, Option 20, Option 21, Option 30, Option 42) 7--1
Audio Options (Option 40 and Option 41) 7--3.............................
Serial Digital Interface (Option 1S) 7--4..................................
GPIB Interface (Option 48) 7--4........................................
White Phosphor CRT (Option 74) 7--4...................................
Cabinet and Mounting Options (Option 1C, VM7FR1, VM7FC1) 7--5..........
Auxiliary Software Options (VMBKUP, VMT, VMREMGR) 7--5.............
Optional Accessories 7--5.............................................
Power Cord Options 7--6..............................................
Replaceable Electrical Parts
Diagrams
Block Diagram 9--1..................................................
Interconnection Diagram 9--1..........................................
Replaceable Mechanical Parts
Parts Ordering Information 10--1.........................................
Using the Replaceable Mechanical Parts List 10--1..........................

Table of Contents
VM700T Video Measurement Set Service Manual vii
List of Figures
Figure 2--1: Power line conditioner with a rackmounted VM700T 2--3.
Figure 2--2: VM700T Startup menu 2--5...........................
Figure 2--3: Touch screen calibration (display) 2--6..................
Figure 2--4: Touch screen calibration (panel) 2--6...................
Figure 2--5: Panel calibration values 2--7..........................
Figure 2--6: Diagnostic configuration menu 2--7....................
Figure 2--7: Set diagnostics power up mode menu 2--8...............
Figure 2--8: The VM700T Video Measurement Set front panel 2--11....
Figure 2--9: Measurement set keypad 2--12.........................
Figure 2--10: VM700T Video Measurement Set rear panel 2--16........
Figure 2--11: Video signal input connectors 2--18....................
Figure 2--12: Cables and connectors supplied with Audio Option 40 2--19
Figure 2--13: Option 40 connectors and pin assignments 2--19.........
Figure 2--14: Option 41 input connector pin locations 2--20............
Figure 2--15: GPIB board rear panel 2--21..........................
Figure 2--16: VM700T rear panel with Option 1S installed 2--23.......
Figure 2--17: Option 1S rear panel 2--23............................
Figure 3--1: Analog input board (A1) block diagram 3--4.............
Figure 3--2: Genlock board (A2) block diagram 3--8.................
Figure 3--3: ADC board block diagram 3--12........................
Figure 3--4: Filter switch board (A4) block diagram 3--15.............
Figure 3--5: CPU board block diagram 3--16........................
Figure 3--6: CPU I/O board block diagram 3--18....................
Figure 3--7: Acquisition circuitry block diagram 3--21................
Figure 3--8: Controller section block diagram 3--23..................
Figure 3--9: Dither generator 64-step dither waveform 3--26...........
Figure 3--10: Front panel board block diagram 3--27.................
Figure 3--11: Keypad board (A10A2) block diagram 3--28.............
Figure 3--12: Picture Monitor simplified block diagram 3--30..........
Figure 3--13: Simplified block diagram of the power supply 3--32......
Figure 3--14: Audio Processor block diagram 3--34...................
Figure 3--15: Audio Analog block diagram 3--38.....................
Figure 3--16: Audio Analog block diagram 3--43.....................
Figure 3--17: GPIB board location in the measurement set 3--44........
Figure 3--18: Block diagram of the GPIB interface option board 3--45...
Figure 3--19: GPIB rear panel arrangement 3--46....................
Figure 3--20: Option 1S block diagram 3--48........................

Table of Contents
viii VM700T Video Measurement Set Service Manual
Figure 4--1: VM700T Startup Menu 4--1..........................
Figure 4--2: Instrument run modes menu 4--2......................
Figure 4--3: Configure directory 4--3..............................
Figure 4--4: Power-up diagnostics selection display 4--4..............
Figure 4--5: Diagnostic selection file showing an unselected choice 4--4.
Figure 4--6: Option 40 cable connections, level accuracy and
flatness check 4--16..........................................
Figure 4--7: Option 40 cable connections, distortion measurement
accuracy check 4--17.........................................
Figure 4--8: Option 41 cable connections, level accuracy and
flatness check 4--21..........................................
Figure 4--9: Option 41 cable connections, distortion measurement
accuracy check 4--22.........................................
Figure 5--1: Adjustment locations 5--5.............................
Figure 5--2: VM700T startup menu 5--11...........................
Figure 5--3: Display monitor centering adjustments 5--12.............
Figure 5--4: Touch screen calibration (display) 5--12..................
Figure 5--5: Touch screen calibration (panel) 5--13...................
Figure 5--6: Panel calibration values 5--13..........................
Figure 5--7: Example gain-phase analyzer flatness waveforms 5--18.....
Figure 5--8: VM700T startup menu 5--21...........................
Figure 5--9: Instrument run modes menu 5--21......................
Figure 5--10: Loosening the right-side cover 5--23....................
Figure 5--11: Cable requirements for adjusting the Cable Meter 5--26...
Figure 5--12: Location of CPU board dip switch and SDI board test point
and adjustment resistor 5--28.................................
Figure 5--13: Adjusting the eye crossing horizontal position 5--30.......
Figure 5--14: Adjusting the rising edge of the SDI Eye Diagram
application 5--31............................................
Figure 6--1: Locating the major standard assemblies 6--7............
Figure 6--2: Removing a cover panel 6--8..........................
Figure 6--3: Removing the left card cage center support 6--10..........
Figure 6--4: Installing the I/O board in the card cage 6--10............
Figure 6--5: Locating audio option boards in the left-side card cage 6--11
Figure 6--6: Orientation of the cable adapter collar 6--13..............
Figure 6--7: Option 41 (Triple-Input Audio) input connector
pin locations 6--13...........................................

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VM700T Video Measurement Set Service Manual ix
Figure 6--8: Ferrite forms installed on the Option 41 interconnection
cable 6--14.................................................
Figure 6--9: Loosening the screws on the right card cage retainer 6--16..
Figure 6--10: Location of right card cage circuit boards 6--17..........
Figure 6--11: Acquisition Memory board (A18) cables 6--19............
Figure 6--12: SDI board (A22) cable connections 6--21................
Figure 6--13: Installing the SDI Rear Panel Interface (A23) assembly 6--22
Figure 6--14: Disconnecting the Analog Input board connectors 6--24...
Figure 6--15: Removing screws from the signal input connector plate 6--25
Figure 6--16: Removing the Genlock board 6--27....................
Figure 6--17: Removing the ADC board 6--29.......................
Figure 6--18: Removing the Filter Switch board 6--31.................
Figure 6--19: Locating the bezel retaining screws 6--33................
Figure 6--20: Disconnecting the STBY/ON circuit board 6--34.........
Figure 6--21: Removing the retaining screws from the Keypad board 6--35
Figure 6--22: Orienting connector J933 for installation on the
Keypad board 6--36.........................................
Figure 6--23: Removing the CRT assembly retaining screws 6--37......
Figure 6--24: Removing the power supply retaining screws 6--39.......
Figure 6--25: Removing the Interconnect board assembly retaining
screws 6--41................................................
Figure 6--26: Removing the cooling fan 6--42........................
Figure 6--27: Construction of rack slides 6--45.......................
Figure 6--28: Rail detail for mounting rack slides 6--46...............
Figure 6--29: Mounting stationary rack sections 6--47................
Figure 6--30: Installing and removing the VM700T from the rack 6--48.
Figure 6--31: VM700T diagnostics menus overview 6--57..............
Figure 6--32: VM700T diagnostic menus overview (cont.) 6--58.........
Figure 6--33: VM700T startup menu 6--59..........................
Figure 6--34: Low level diagnostics menu 6--60......................
Figure 6--35: Low level diagnostic OVERALL RUN MODE menu 6--61.
Figure 6--36: Custom run mode menu 6--62.........................
Figure 6--37: Build CUSTOM TEST SEQUENCE menu for display 6--63
Figure 6--38: Front Panel diagnostic selection buttons 6--64...........
Figure 6--39: Special power-up boot modes 6--65.....................
Figure 6--40: VM700T Startup menu 6--66..........................
Figure 6--41: Diagnostic Utilities menu 6--66........................
Figure 6--42: Clear File System Utility menu 6--68...................
Figure 6--43: Clear CPU NVRAM Utility menu 6--68.................

Table of Contents
xVM700T Video Measurement Set Service Manual
Figure 6--44: Touch screen calibration (display) 6--69.................
Figure 6--45: Touch screen calibration (panel) 6--69..................
Figure 6--46: Panel calibration values 6--70.........................
Figure 6--47: Diagnostic configuration menu 6--70...................
Figure 6--48: Set diagnostics power-up mode menu 6--71..............
Figure 6--49: Instrument run modes menu 6--72.....................
Figure 6--50: Normal Boot switch setting 6--73......................
Figure 6--51: High level diagnostics menu 6--74......................
Figure 6--52: Select run mode, the high level diagnostic initial menu 6--75
Figure 6--53: Interactive run mode menu after running first main
test 6--77...................................................
Figure 6--54: Power-up diagnostics selection display 6--78............
Figure 6--55: High level diagnostics test blocks 6--79.................
Figure 6--56: Instrument Run Modes menu 6--85....................
Figure 6--57: Boot switch setting to enable diagnostic output to
serial port 0 6--86...........................................
Figure 6--58: Diagnostics Configuration menu 6--86..................
Figure 6--59: VM700T rear panel 6--87.............................
Figure 6--60: Front-panel power supply and over temperature
indicators 6--90.............................................
Figure 6--61: Power supply LED indicators 6--91....................
Figure 6--62: Power supply test points 6--93.........................
Figure 6--63: Procedure for troubleshooting the audio option boards 6--95
Figure 6--64: Test positions on the Audio Analog board 6--96..........
Figure 6--65: SDI board cable connections and J5 pinouts 6--102........
Figure 6--66: Option 1S simplified block diagram 6--105...............
Figure 6--67: Signal connections for performing Option 1S
diagnostic tests 6--105.........................................
Figure 9--1: VM700T Video Measurement Set simplified block
diagram 9--3..............................................
Figure 9--2: VM700T Video Measurement Set interconnection
diagram 9--4..............................................
Figure 10--1: Front assemblies and power supply 10--15...............
Figure 10--2: Circuit boards 10--17.................................
Figure 10--3: Chassis assembly 10--19...............................
Figure 10--4: Cabinet and accessories 10--21.........................
Figure 10--5: Option 1S circuit boards 10--23........................
Figure 10--6: Circuit board fuse locations 10--25......................

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VM700T Video Measurement Set Service Manual xi
List of Tables
Table 1--1: Input characteristics 1--1.............................
Table 1--2: Digitizer 1--2........................................
Table 1--3: Synchronization 1--3.................................
Table 1--4: Physical characteristics 1--4...........................
Table 1--5: Power requirements 1--4..............................
Table 1--6: Environmental specification 1--4.......................
Table 1--7: Certifications and compliances 1--6.....................
Table 1--8: Safety standards 1--7.................................
Table 1--9: Safety certification compliance 1--7.....................
Table 1--10: Rear panel signal connectors 1--8.....................
Table 1--11: Optional power cords 1--9...........................
Table 1--12: AC Electrical Characteristics 1--10.....................
Table 1--13: Power Line Conditioner Mechanical Characteristics 1--10.
Table 1--14: Power Line Conditioner Environmental Characteristics 1--11
Table 1--15: Bar Line Time 1--12.................................
Table 1--16: Bounce 1--12........................................
Table 1--17: Burst Frequency 1--13................................
Table 1--18: Chrominance to Luminance 1--13......................
Table 1--19: Chrominance Noise 1--13.............................
Table 1--20: Chrominance Nonlinearity 1--13.......................
Table 1--21: Color Bar 1--13.....................................
Table 1--22: Differential Gain and Phase 1--14......................
Table 1--23: Frequency Response and Group Delay 1--14.............
Table 1--24: Horizontal Blanking 1--14............................
Table 1--25: Horizontal Timing 1--14..............................
Table 1--26: Incidental Carrier Phase Modulation 1--15..............
Table 1--27: Jitter 1--15.........................................
Table 1--28: K-Factor 1--15......................................
Table 1--29: Level Meter 1--15....................................
Table 1--30: Line Frequency 1--15................................
Table 1--31: Luminance Nonlinearity 1--15.........................
Table 1--32: MultiBurst 1--16....................................
Table 1--33: Noise Spectrum 1--16................................
Table 1--34: SCH Phase 1--16....................................
Table 1--35: Two Field 1--16.....................................
Table 1--36: Vertical Blanking 1--16...............................
Table 1--37: VITS ID 1--17.......................................

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xii VM700T Video Measurement Set Service Manual
Table 1--38: Line Blanking timing measurements 1--17...............
Table 1--39: Field Blanking timing measurements 1--17..............
Table 1--40: Other Timing measurements 1--18.....................
Table 1--41: Amplitude and Phase measurements 1--18...............
Table 1--42: Frequency Response measurements 1--19................
Table 1--43: Waveform Distortion measurements 1--19...............
Table 1--44: Low Frequency Error 1--20...........................
Table 1--45: Noise measurements 1--20.............................
Table 1--46: Incidental Carrier Phase Modulation 1--20..............
Table 1--47: Bar Line Time 1--21.................................
Table 1--48: Bounce 1--21........................................
Table 1--49: Burst Frequency 1--22................................
Table 1--50: Chrominance-to-Luminance Gain and Delay 1--22........
Table 1--51: Chrominance Frequency Response 1--22................
Table 1--52: Chrominance Noise 1--22.............................
Table 1--53: Chrominance Non-Linearity 1--22......................
Table 1--54: ColorBar 1--22......................................
Table 1--55: SMPTE color bar nominal values 1--23.................
Table 1--56: Differential Gain and Phase 1--23......................
Table 1--57: Frequency Response and Group Delay 1--23.............
Table 1--58: Horizontal Blanking 1--23............................
Table 1--59: Horizontal Timing 1--23..............................
Table 1--60: Incidental Carrier Phase Modulation 1--24..............
Table 1--61: Jitter 1--24.........................................
Table 1--62: K-Factor 1--24......................................
Table 1--63: Level Meter 1--24...................................
Table 1--64: Line Frequency 1--24................................
Table 1--65: Luminance Non-Linearity 1--25........................
Table 1--66: Multiburst 1--25.....................................
Table 1--67: Noise Spectrum 1--25................................
Table 1--68: SCH Phase 1--25....................................
Table 1--69: Short Time Distortion 1--25...........................
Table 1--70: Two Field 1--25.....................................
Table 1--71: VITS ID 1--26.......................................
Table 1--72: Vertical Blanking 1--26...............................
Table 1--73: RS-170A horizontal blanking interval timing 1--26........
Table 1--74: RS-170A vertical blanking interval 1--27................
Table 1--75: FCC horizontal blanking interval timing 1--27...........

Table of Contents
VM700T Video Measurement Set Service Manual xiii
Table 1--76: FCC vertical blanking interval timing 1--27..............
Table 1--77: Amplitude and Phase measurements 1--27...............
Table 1--78: Frequency Response measurements 1--28................
Table 1--79: Incidental Carrier Phase Modulation 1--28..............
Table 1--80: Color Bar measurements 1--29.........................
Table 1--81: Out-of-Service measurements 1--29.....................
Table 1--82: Waveform Distortion measurements 1--29...............
Table 1--83: VIRS measurements 1--29............................
Table 1--84: Signal-to-Noise Ratio measurements 1--30...............
Table 1--85: O.33 Automatic audio test measurement
specifications 1--31..........................................
Table 1--86: Tektronix automatic audio test measurement
specifications 1--32..........................................
Table 1--87: Frequency and Noise specifications 1--32................
Table 1--88: Accuracy and Flatness specifications 1--34...............
Table 1--89: General Audio Spectrum specifications 1--34.............
Table 1--90: Audio Spectrum Level measurement specifications 1--34...
Table 1--91: Harmonic Analyzer measurement specifications 1--35.....
Table 1--92: Miscellaneous specifications 1--35......................
Table 1--93: Multitone Analyzer measurement specifications 1--35.....
Table 1--94: Audio/Video Timing measurement specifications 1--36.....
Table 1--95: IEEE 488.1 interface functions implemented in the
VM700T GPIB interface card 1--37............................
Table 1--96: GPIB Electrical characteristics 1--37...................
Table 1--97: Mechanical specifications 1--38........................
Table 1--98: Optional accessories 1--38.............................
Table 1--99: SDI Eye Diagram application 1--38.....................
Table 1--100: SDI Jitter application 1--39..........................
Table 1--101: SDI Wander application 1--40........................
Table 1--102: SDI Interchannel Timing application 1--40.............
Table 1--103: SDI Audio/Video Timing application 1--41.............
Table 1--104: SDI Ch. A Input 1--42...............................
Table 1--105: SDI Ch. B Input 1--43...............................
Table 1--106: LTC Input 1--43....................................
Table 1--107: SDI Output 1--44...................................
Table 1--108: Analog Ref. Input 1--44..............................
Table 1--109: AES Audio Input 1--44..............................
Table 1--110: Environmental specification 1--44.....................

Table of Contents
xiv VM700T Video Measurement Set Service Manual
Table 2--1: Audio Option 41 connector pin assignments 2--20..........
Table 2--2: Status indicators 2--21.................................
Table 3--1: Signals used by VM700T RS-232C ports 3--19............
Table 4--1: Test equipment required for verification 4--6.............
Table 4--2: Test equipment required for verification procedures 4--14...
Table 4--3: Accuracy and flatness specifications 4--15................
Table 4--4: Example test signals for level and flatness test 4--16........
Table 4--5: Accuracy and flatness specifications 4--20................
Table 4--6: Example test signals for level and flatness test 4--21........
Table 4--7: Test equipment required for Option 1S verification 4--25...
Table 5--1: Test equipment required for verification and adjustment 5--1
Table 5--2: Gain-phase analyzer setup 5--16........................
Table 5--3: Gain-phase analyzer setup for ADC 5--19................
Table 5--4: Test equipment required for Option 1S adjustment 5--22....
Table 5--5: SDI Eye Diagram application gain and offset value
limits 5--24................................................
Table 5--6: Jitter application adjustment value limits 5--25............
Table 5--7: Cable meter adjustment value limits 5--27................
Table 6--1: Static susceptibility 6--2..............................
Table 6--2: Audio Option 41 connector pin assignments 6--12..........
Table 6--3: VM700T symptoms and corrective actions 6--52...........
Table 6--4: User-selectable diagnostics 6--80........................
Table 6--5: Diagnostic test number to hardware components tested
cross reference 6--83.........................................
Table 6--6: Typical communication setup parameters 6--87............
Table 6--7: VM700T RS-232 connector pin outs 6--88................
Table 6--8: Typical RS-232C null modem cable wiring 6--89...........
Table 6--9: Power supply trouble indicators 6--92....................
Table 6--10: Power supply voltages 6--93...........................
Table 6--11: Audio Processor board diagnostics 6--97.................
Table 6--12: Audio Analog board diagnostics 6--98...................
Table 6--13: SDI Option 1S diagnostic test descriptions 6--107..........
Table 7--1: Optional accessories 7--5..............................
Table 7--2: Power cord options 7--6...............................

VM700T Video Measurement Set Service Manual xv
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
To avoid potential hazards, use this product only as specified.
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Use Proper Voltage Setting. Before applying power, ensure that the line selector is
in the proper position for the power source being used.
Ground the Product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
ToAvoidFireor
Personal Injury

General Safety Summary
xvi VM700T Video Measurement Set Service Manual
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
Protective Ground
(Earth) Terminal
CAUTION
Refer to Manual
Double
Insulated
WARNING
High Voltage
Symbols and Terms