Instruction/ maintenance manual of the product VITS100 Tektronix
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Instruction Manual VITS100 NTSC VITS Inserter 070-8333-02 W arning The servicing instructions are for use by qualified personnel only . T o avoid personal injury , do not perform any servicing unless you are qualified to do so. Refer to all safety summaries prior to performing service.
Copyright © T ektronix, Inc. All rights reserved. T ektronix 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.
W ARRANTY T ektronix 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.
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Service Assurance If you have not already purchased Service Assurance for this product, you may do so at any time during the product’ s warranty period.
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VITS 100 NTSC VITS Inserter Instruction Manual i T able of Contents General Safety Summary vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary ix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T able of Contents ii VITS 100 NTSC VITS Inserter Instruction Manual Cleaning and Inspection 7–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal and Replacement Instructions 7–8 . . . . . . . . . . .
T able of Contents VITS 100 NTSC VITS Inserter Instruction Manual iii List of Figures Figure 1–1: A setup for the functional check 1–3 . . . . . . . . . . . . . . . . . . . . Figure 1–2: A typical installation 1–5 . . . . . . . . . . . . . . .
T able of Contents iv VITS 100 NTSC VITS Inserter Instruction Manual Figure 5–9: Connecting the RF bridge to the spectrum analyzer/tracking generator 5–18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 5–10: The initial frequency response setup 5–20 .
T able of Contents VITS 100 NTSC VITS Inserter Instruction Manual v List of T ables T able 1–1: Factory VITS, Standard and Option 1M 1–4 . . . . . . . . . . . . . T able 1–2: Factory VITS, Option 1J 1–4 . . . . . . . . . . . . . . . . . . . . .
T able of Contents vi VITS 100 NTSC VITS Inserter Instruction Manual T able 7–1: Mode Selection Jumpers 7–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . T able 7–2: T est Jumpers 7–6 . . . . . . . . . . . . . . . . . . . . . . . . . .
VITS 100 NTSC VITS Inserter Instruction Manual vii General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. T o avoid potential hazards, use this product only as specified.
General Safety Summary viii VITS 100 NTSC VITS Inserter Instruction Manual W ARNING. W arning statements identify conditions or practices that could r esult in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could r esult in damage to this pr oduct or other pr operty .
VITS 100 NTSC VITS Inserter Instruction Manual ix Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone.
Service Safety Summary x VITS 100 NTSC VITS Inserter Instruction Manual.
Getting Started.
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VITS 100 NTSC VITS Inserter Instruction Manual 1–1 Getting Started The T ektronix VITS 100 NTSC VITS Inserter is a high quality signal generator designed to insert VITS (V ertical Interval T est Signals) into program video. It automatically switches to bypass mode in the event of power failure or loss of lock to the program video.
Getting Started 1–2 VITS 100 NTSC VITS Inserter Instruction Manual The VITS inserter can also insert a one-line source identification code on any of the available lines in vertical blanking. The T ektronix VM 700A V ideo Measure- ment Set can then use this code to identify the source of the signal it is measur- ing.
Getting Started VITS 100 NTSC VITS Inserter Instruction Manual 1–3 Functional Check and Installation It is good practice to perform a functional check of a new instrument before installing it into your system.
Getting Started 1–4 VITS 100 NTSC VITS Inserter Instruction Manual 7. While watching the waveform monitor display , repeatedly press the VITS inserter BYP ASS switch to alternate between bypass and normal operating modes.
Getting Started VITS 100 NTSC VITS Inserter Instruction Manual 1–5 Y ou can mount the VITS inserter in a standard equipment rack or custom install it. In custom installations, be sure to provide easy access to the signal-selection DIP switches through the removeable panel in the top of the instrument.
Getting Started 1–6 VITS 100 NTSC VITS Inserter Instruction Manual.
Operating Basics.
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VITS 100 NTSC VITS Inserter Instruction Manual 2–1 Operating Basics The VITS 100 NTSC VITS Inserter can generate any one of thirteen test signals for insertion on lines 17 through 20 in the vertical interval of the video frame. If power fails or the instrument cannot genlock, the VITS inserter automatically switches to bypass mode.
Operating Basics 2–2 VITS 100 NTSC VITS Inserter Instruction Manual Rear Panel The VITS 100 NTSC VITS Inserter rear panel, shown in Figure 2–2, contains the mains power input, switch, and fuse; the program input and output connectors; DIP switches for source identification code selection; and a remote connector .
Operating Basics VITS 100 NTSC VITS Inserter Instruction Manual 2–3 The PROGRAM OUT connector is the program video output. Output video can have user-selected VITS inserted on selected lines.
Operating Basics 2–4 VITS 100 NTSC VITS Inserter Instruction Manual In addition to internally generated test signals, the VITS inserter can pass video signals that are already in the vertical interval of the program video. This includes the delete/insert lines, which are lines 17 through 20 in all fields.
Operating Basics VITS 100 NTSC VITS Inserter Instruction Manual 2–5 The VITS 100 NTSC VITS Inserter is configured during manufacture to insert the signals listed in T able 2–1. See VITS Selection , below , for instructions on configuring the VITS inserter to insert the signals that best suit your applications and facility .
Operating Basics 2–6 VITS 100 NTSC VITS Inserter Instruction Manual Screws (2) Cover Figure 2–4: Location of VITS selection switches Switches S1 and S2 make the selections for fields 1 and 3, and switches S3 and S4 make the selections for fields 2 and 4.
Operating Basics VITS 100 NTSC VITS Inserter Instruction Manual 2–7 The switch settings for signal selection are listed in T able 2–2. When a switch segment is thrown to the left (as viewed from the front of the VITS inserter), it is open; when thrown to the right, it is closed.
Operating Basics 2–8 VITS 100 NTSC VITS Inserter Instruction Manual Remote Control Remote control in the standard VITS 100 NTSC VITS Inserter is limited to ground-closure Bypass control and (+5 V) outputs for remote BYP ASS, UNLOCKED, and POWER indicator lights.
Specifications.
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VITS 100 NTSC VITS Inserter Instruction Manual 3–1 Specifications This section contains tables that list the specifications for the VITS 100 NTSC VITS Inserter .
Specifications 3–2 VITS 100 NTSC VITS Inserter Instruction Manual T able 3–1: Program channel characteristics (Cont.) Characteristic Information Phase Matching of Inserted T est Signal to Program Video ± 1 ° (Program Sync and Burst Normal Level) Pulse to Bar Ratio 100% ± 0.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–3 T able 3–4: FCC Composite characteristics Characteristic Information Timing See Figure 3–5 Modulated 5-step Staircase Luminance Amplitude 80.4 IRE ± 0.7 IRE Riser Amplitude 1/5 of 5-step amplitude ± 0.
Specifications 3–4 VITS 100 NTSC VITS Inserter Instruction Manual T able 3–5: FCC Color Bars characteristics Characteristic Information Timing See Figure 3–4 Luminance Rise Time 250 ns ± 25 ns Bar Characteristics: White Y ellow Cyan Green Magenta Red Blue Black Luminance Amplitude (mV p-p) 714.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–5 T able 3–8: NTC7 Combination characteristics Characteristic Information Timing See Figure 3–8 White Reference Bar Amplitude 100 IRE ± 0.7 IRE Rise Time 250 ns ± 25 ns Multiburst Packets Amplitude 50 IRE ± 0.
Specifications 3–6 VITS 100 NTSC VITS Inserter Instruction Manual T able 3–9: NTC7 Composite characteristics Characteristic Information Timing See Figure 3–9 Modulated 5-step Staircase Luminance Amplitude 90.2 IRE ± 0.7 IRE Riser Amplitude 1/5 of 5-step amplitude ± 0.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–7 T able 3–1 1: SIN X/X characteristics Characteristic Information Timing See Figure 3–1 1 Bandwidth 4.
Specifications 3–8 VITS 100 NTSC VITS Inserter Instruction Manual T able 3–14: Cable Sweep (Option 2) characteristics Characteristic Information Timing See Figure 3–14 Pedestal Amplitude 50 IRE Sweep Amplitude 100 IRE Sweep Start Frequency 0.1 MHz Sweep End Frequency 4.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–9 T able 3–16: Power Supply characteristics Characteristic Information Output V oltages +5 V ± 200 mV from 1A to 3 A (voltage adjustable) –5.2 V ± 300 mV from 0.5 A to 1 A ± 12 V ± 120 mV from 0.
Specifications 3–10 VITS 100 NTSC VITS Inserter Instruction Manual T able 3–18: Environmental characteristics Characteristic Information T emperature Non-Operating –40 ° to +65 ° C (–40 ° t.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–1 1 T able 3–19: Certifications and compliances Category Standards or description EC Declaration of Conformity – EMC Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility .
Specifications 3–12 VITS 100 NTSC VITS Inserter Instruction Manual T able 3–19: Certifications and compliances (Cont.) Category Standards or description Additional Compliance IEC61010-1 Safety requirements for electrical equipment for measurement, control, and laboratory use.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–13 Figure 3–2: 7.5% Black Figure 3–3: 50% Gray.
Specifications 3–14 VITS 100 NTSC VITS Inserter Instruction Manual Figure 3–4: FCC Color Bars Figure 3–5: FCC Composite.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–15 Figure 3–6: Multiburst Figure 3–7: Multipulse.
Specifications 3–16 VITS 100 NTSC VITS Inserter Instruction Manual Figure 3–8: NTC7 Combination Figure 3–9: NTC7 Composite.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–17 Figure 3–10: Red Field Figure 3–1 1: SIN X/X.
Specifications 3–18 VITS 100 NTSC VITS Inserter Instruction Manual Figure 3–12: VIRS Figure 3–13: Cable Multiburst.
Specifications VITS 100 NTSC VITS Inserter Instruction Manual 3–19 Figure 3–14: Cable Sweep.
Specifications 3–20 VITS 100 NTSC VITS Inserter Instruction Manual.
The following servicing instructions are for use only by qualified personnel. T o avoid injury , do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so. Refer to all Safety Summaries before performing any service.
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Theory of Operation.
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VITS 100 NTSC VITS Inserter Instruction Manual 4–1 Theory of Operation This section of the manual begins with a functional description of the circuitry . This brief discussion is followed by a more detailed set of circuit descriptions that take you to the individual component level of the schematic diagrams.
Theory of Operation 4–2 VITS 100 NTSC VITS Inserter Instruction Manual The power inductor is driven by switching the voltage to its primary winding on and off at a rate of approximately 45 kHz. The power inductor is used as an energy storage device.
Theory of Operation VITS 100 NTSC VITS Inserter Instruction Manual 4–3 samples. The outputs of U4 and U5 are multiplexed by U82 and U83 to increase the data rate from 4 FSC to 8 FSC . The outputs of U82 and U83 are latched by U1 before being converted to ECL levels.
Theory of Operation 4–4 VITS 100 NTSC VITS Inserter Instruction Manual The Input Buffer , U42, also drives the genlock analog-to-digital converter (ADC), U43. The ADC also has AGC and is clamped with “synctip” and “backporch” signals, which provide the timing.
Theory of Operation VITS 100 NTSC VITS Inserter Instruction Manual 4–5 The circuitry that controls signal switching appears on three of the schematic diagrams in the Diagrams section of this manual.
Theory of Operation 4–6 VITS 100 NTSC VITS Inserter Instruction Manual Diagram 1. U12 and U15 form a state machine to generate the data for shaped pulse edges. When U15 sees a low-to-high transition, it counts up to six and stops. When U15 sees a high-to-low transition it counts back to zero and stops.
Theory of Operation VITS 100 NTSC VITS Inserter Instruction Manual 4–7 R T1is a thermistor that limits inrush current on power-up. R V1 is metal-oxide- varistor that clips any high voltage spikes on the AC line before they get to the switching circuits.
Theory of Operation 4–8 VITS 100 NTSC VITS Inserter Instruction Manual Current In primary Current In secondaries V oltage across primary V oltage across +5 V secondary V oltage across -5 V secondary Output diodes on Output diodes off Q16 on Q16 off V IN +12V –12V –5V +5V +V –V –5.
Theory of Operation VITS 100 NTSC VITS Inserter Instruction Manual 4–9 The Pulse W idth Modulator , U78, is a current-mode controller . Using inputs from the primary circuit and the +5 V output, it varies the width of the pulse that controls Q16.
Theory of Operation 4–10 VITS 100 NTSC VITS Inserter Instruction Manual These requirements are met by using a FET , Q17, in the emitter circuit to turn Q16 on and off.
Performance V erification.
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VITS 100 NTSC VITS Inserter Instruction Manual 5–1 Performance V erification This section contains procedures for verifying that the VITS 100 NTSC VITS Inserter performs according to the characteristics stated in the Specifications section of this manual .
Performance V erification 5–2 VITS 100 NTSC VITS Inserter Instruction Manual Equipment Required T able 5–1 lists the test equipment recommended for Performance V erification. Alternate equipment must meet the minimum requirements for the listed equipment.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–3 T able 5–1: Equipment Required (Cont.) Item Example Requirements 75 W Feed-Through T erminator BNC-type, accuracy of 0.
Performance V erification 5–4 VITS 100 NTSC VITS Inserter Instruction Manual 2. Select the NTC 7 Composite signal from the television test signal generator . 3. Store the bar and the line time portions of the NTC 7 composite signal as a video measurement set reference signal.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–5 NOTE . The settings of S1-S2-S3-S4 dictate the signals, lines, and fields for the VITS insertion pr ogram.
Performance V erification 5–6 VITS 100 NTSC VITS Inserter Instruction Manual Requirement: Stable VITS inserter operation over an AC input range of 90–250 V H V ary the autotransformer between 90 and 125 V ac (210 and 250 V ac for “220 volt” sources) and verify stable instrument operation.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–7 IRE Blanking level Figure 5–3: Blanking level at 0 IRE 6. Move the 75ĂW coaxial cable from the VITS inserter PROGRAM OUT to the MONITOR OUT . 7. Repeat steps 3, 4, and 5.
Performance V erification 5–8 VITS 100 NTSC VITS Inserter Instruction Manual W aveform/ V ector Monitor TSG/SPG 75 ĂW T erminator Subcarrier Out EXT CW REF Ext Ref 75 ĂW T erminator Black burst V ITS I n ser t er Program In Program Out 75 ĂW T erminator Linearity Out Figure 5–4: Equipment connections for phase matching 2.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–9 Requirement: Phase error + 0 ° " 1 ° at F SC . 1. T urn off waveform/vector monitor line select. 2. Set the burst vector to the outer circle and 0 ° on the vectorscope.
Performance V erification 5–10 VITS 100 NTSC VITS Inserter Instruction Manual 5. Select the NTC 7 Composite test signal from the television test signal generator . 6. Select Relative to Ref Bar & Line T ime on the video measurement set. 7. Check that the bar amplitude is 100 IRE 1% (1RE).
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–1 1 Requirements: Differential gain v 0.2% Differential phase v 0.2 _ 1. Select Relative to Ref Diff Phase + Gain on the video measurement set. 2. Check that the differential gain is v 0.
Performance V erification 5–12 VITS 100 NTSC VITS Inserter Instruction Manual 3. Remove the BNC female-to-female adaptor and connect the coaxial cable from the video measurement set CH A to the VITS inserter PROGRAM OUT .
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–13 Requirement: SCH phase + 0 _ " 5 _ . 1. Select the video measurement set SCH Phase measurement. 2. Check that the SCH phase is 0 _ " 5 _ . 3. Select line 18, any field, on the video measurement set.
Performance V erification 5–14 VITS 100 NTSC VITS Inserter Instruction Manual Noise generator VITS Inserter T elevision test signal generator Video measurement set T est Signal 75 ĂW T erminator Program Out Program In Figure 5–8: Measuring hum rejection 6.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–15 Requirement: Chrominance risetime + 300 ns " 35 ns 1. T urn on the waveform/vector monitor vertical magnifier . 2. Position the signal blanking level to the graticule 0 IRE line.
Performance V erification 5–16 VITS 100 NTSC VITS Inserter Instruction Manual 8. Set the VITS inserter VITS Selection DIP switches S2 and S4 for the red field signal; segments 1, 3, and 4 are open and segment 2 is closed (101 1). 9. Set the waveform/vector monitor for Ext Ref + CW .
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–17 30. Change the coaxial cable from the TSG/SPG color bar output to the black burst output. 31. Measure burst amplitude. It should measure about 40 IRE. 32. Use the TSG/SPG variable burst control to reduce burst amplitude to 28 IRE (–3 dB).
Performance V erification 5–18 VITS 100 NTSC VITS Inserter Instruction Manual Requirements: Return loss 36 dB to 5 MHz. Spurious signals 55 dB down NOTE . Successful completion of the Return Loss checks guarantees that the input and output impedances ar e within specification.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–19 10. Adjust the spectrum analyzer external attenuation amplitude by the amount noted in step 9. 11 . Connect the precision high-frequency terminator to the Device Under T est connector on the RF Bridge.
Performance V erification 5–20 VITS 100 NTSC VITS Inserter Instruction Manual 27. Connect a 50 W -to-75 W minimum loss attenuator to the spectrum analyzer RF Input. 28. Connect a 75 W coaxial cable from the 50 W -to-75 W minimum loss attenuator to the VITS inserter PROGRAM OUT .
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–21 2. Set the TSG/SPG Multiburst output as shown in T able 5–4. T able 5–4: Multiburst Controls Control Setting Frequency Range High Markers On Composite On Amplitude Full Sweep On 3.
Performance V erification 5–22 VITS 100 NTSC VITS Inserter Instruction Manual 9. Connect the coaxial cable from the TSG/SPG multiburst output to the VITS inserter PROGRAM IN.
Performance V erification VITS 100 NTSC VITS Inserter Instruction Manual 5–23 3. Set the waveform/vector monitor line select to line 19, all fields. 4. Check for VIRS. If there is a signal other than VIRS, you will need to either reprogram the TSG/SPG VITS signals or find a VIRS signal on another line.
Performance V erification 5–24 VITS 100 NTSC VITS Inserter Instruction Manual 5. Check that the VIRS signal disappears and the VITS inserter front-panel BYP ASS light comes on. 6. Remove the grounding wire. 7. Check that the VIRS signal reappears and the VITS inserter front-panel BYP ASS light goes out.
Adjustment Procedure.
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VITS 100 NTSC VITS Inserter Instruction Manual 6–1 Adjustment Procedures If VITS 100 NTSC VITS Inserter performance is not within tolerance for a particular characteristic, determine the cause, repair if necessary , and then use the appropriate adjustment procedure to return the instrument operation to perfor- mance specification.
Adjustment Procedures 6–2 VITS 100 NTSC VITS Inserter Instruction Manual T able 6–1: Recommended T est Equipment Item Minimum Requirements Example V ariable Autotransformer V ariable range of 90 to 120 V AC (220 V AC operation use 220 V ac autotransformer) General Radio metered auto transformer: W10MT3W .
Adjustment Procedures VITS 100 NTSC VITS Inserter Instruction Manual 6–3 W ith the exception of the video signal connection, this step is the starting point for any adjustment. H Disconnect power and remove the cabinet. See the Maintenance section of this manual for instructions.
Adjustment Procedures 6–4 VITS 100 NTSC VITS Inserter Instruction Manual TP3 J17 J19 J18 J20 S8 S7 S4 S3 S2 S1 TP9 GND J56 J57 J6 J5 J54 J28 TP7 GND J9 J22 J33 J32 L12 L13 L14 J2 J3 J4 C165 L1 J12 J.
Adjustment Procedures VITS 100 NTSC VITS Inserter Instruction Manual 6–5 Use this step to adjust the +5 V Adjust, R170, which serves as the reference for all other power supplies in the VITS inserter . NOTE . This adjustment affects all adjustments in the VITS inserter .
Adjustment Procedures 6–6 VITS 100 NTSC VITS Inserter Instruction Manual T elevision T est Signal Generator VITS Inserter W aveform/Vector Monitor T est Signal Program In Program Out CH A input 75 W T erminator Figure 6–2: A setup for genlock adjustments 6.
Adjustment Procedures VITS 100 NTSC VITS Inserter Instruction Manual 6–7 Program color fields 1 and 3 Program color fields 2 and 4 Line 18 Line 17 Line 20 Line 19 Line 18 Line 17 Line 20 Line 19 S1 S2 S3 S4 Figure 6–3: VITS selection DIP switches 12.
Adjustment Procedures 6–8 VITS 100 NTSC VITS Inserter Instruction Manual T elevision T est Signal Generator W aveform/Vector Monitor T est Signal CH A input 75 W T erminator BNC Adaptor Figure 6–4: Equipment connections for gain adjustments 2. Select the NTC7 Composite signal from the generator .
Adjustment Procedures VITS 100 NTSC VITS Inserter Instruction Manual 6–9 7. Set VITS selection DIP S1, segments 1 through 4, to 0001 (segments 1, 2, and 3 closed and segment 4 open). See Figure 6–3 for the location of S1. 8. Set the waveform/vector monitor for line select and select line 17, all fields.
Adjustment Procedures 6–10 VITS 100 NTSC VITS Inserter Instruction Manual TSG/SPG T est oscilloscope Peak-to-peak detector OUTPUT INTPUT BNC Adaptor Peak-to-peak detector head Multiburst Out Figure 6–6: Peak-to-peak detector connections 8. Set the TSG/SPG Multiburst output as shown in T able 6–3.
Adjustment Procedures VITS 100 NTSC VITS Inserter Instruction Manual 6–1 1 100 90 10 0% Figure 6–7: Display for adjusting flatness 14. Remove the female to-female BNC adapter . 15. Connect the 75 W coaxial cable from the TSG/SPG multiburst output to the VITS inserter PROGRAM IN as shown in Figure 6–8.
Adjustment Procedures 6–12 VITS 100 NTSC VITS Inserter Instruction Manual 17. Adjust R210 and C165 for a display on the T est Oscilloscope that matches the sweep envelope to the previous waveform ± 4.3 mV from 2 MHz to 6 MHz (second marker to fourth marker) and ± 12.
Maintenance.
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VITS 100 NTSC VITS Inserter Instruction Manual 7–1 Maintenance This section discusses the following topics related to maintaining and servicing the VITS 100 NTSC VITS Inserter: H Service Strategy (b.
Maintenance 7–2 VITS 100 NTSC VITS Inserter Instruction Manual warranty service at most T ektronix service locations. Do not service the VITS 100 NTSC VITS Inserter yourself during the warranty period; rather , contact your nearest T ektronix representative, field office, or service center for information and instructions.
Maintenance VITS 100 NTSC VITS Inserter Instruction Manual 7–3 3. Discharge the static voltage from your body by wearing a wrist grounding strap when handling static-sensitive components. Always service assemblies that contain static-sensitive components at static-free work stations.
Maintenance 7–4 VITS 100 NTSC VITS Inserter Instruction Manual Circuit Board Jumpers There are 3 plug jumpers for mode selection and 14 test jumpers for use during repair or troubleshooting on the VITS 100 NTSC VITS Inserter circuit board. See Figure 7–1 for plug jumper locations and T ables 7–1 and 7–2 for their functions.
Maintenance VITS 100 NTSC VITS Inserter Instruction Manual 7–5 All installation procedures that do not require removing the protective cover of the VITS inserter are discussed in the Getting Started section of this manual.
Maintenance 7–6 VITS 100 NTSC VITS Inserter Instruction Manual T able 7–2: T est Jumpers Function Jumper # Description Factory Setting Genlock Processor Reset J5 Pins 1–2: Reset controlled by hardware watchdog. Pins 2–3: Holds processor in reset mode.
Maintenance VITS 100 NTSC VITS Inserter Instruction Manual 7–7 T able 7–2: T est Jumpers (Cont.) Function Factory Setting Description Jumper # V Sync J56 Pins 1–2: Used by VITS 200. Pins 2–3: VITS 100. 2–3 Blanking J57 Pins 1–2: Used by VITS 200.
Maintenance 7–8 VITS 100 NTSC VITS Inserter Instruction Manual Removal and Replacement Instructions Use the following procedures to remove and replace the top cover , front panel, inserter circuit board assembly , and oscillator oven. This procedure requires a #1 phillips screwdriver .
Maintenance VITS 100 NTSC VITS Inserter Instruction Manual 7–9 3. Install the instrument top cover . This procedure requires a #1 phillips screwdriver and a 9 / 16 inch box end wrench. Removal. Use the following procedure to remove the inserter circuit board assembly; see Figure 7–2 for the location of the various components and fasteners.
Maintenance 7–10 VITS 100 NTSC VITS Inserter Instruction Manual BNC Hex nuts (3) J27 Power supply shield Line filter screws (2) Mounting screw Mounting screw Mounting screw Mounting screw Mounting s.
Maintenance VITS 100 NTSC VITS Inserter Instruction Manual 7–1 1 3. Remove the screw and hex nut that attach the power transistor to the outside of the metal oven. 4. Remove the oven from the Inserter board by carefully pulling the oven off the seven square pins that attach it to the Inserter board.
Maintenance 7–12 VITS 100 NTSC VITS Inserter Instruction Manual Figure 7–3: Diagnostics switch, S8 T o run a user diagnostic (including those run at power up), set S8 to the position for the desired diagnostic and then cycle the power off and on.
Maintenance VITS 100 NTSC VITS Inserter Instruction Manual 7–13 T able 7–3: The User Diagnostics (Cont.) Diagnostic Switch (S8) Setting T est Result Indication Description T est 4 CTC T est Sets up the Counter Timer Chip (CTC, A1U30), and checks to see that the timers can generate inter- rupts.
Maintenance 7–14 VITS 100 NTSC VITS Inserter Instruction Manual.
Replaceable Electrical Parts.
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VITS 100 NTSC VITS Inserter Instruction Manual 8–1 Replaceable Electrical Parts This section contains a list of the electrical components for the VITS 100 NTSC VITS Inserter .
Replaceable Electrical Parts 8–2 VITS 100 NTSC VITS Inserter Instruction Manual Parts List Column Descriptions Column Column Name Description 1 Component Number The component number appears on diagrams and circuit board illustrations, located in the diagrams section.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–3 Manufacturers Cross Index, Electrical Parts Mfr . Code Manufacturer Address City , State, Zip Code 00213 NYTRONICS COM.
Replaceable Electrical Parts 8–4 VITS 100 NTSC VITS Inserter Instruction Manual Manufacturers Cross Index, Electrical Parts (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 18796 MURA T A ELECTRONICS NORTH AMERICA INC.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–5 Manufacturers Cross Index, Electrical Parts (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 5Y400 TRIAX.
Replaceable Electrical Parts 8–6 VITS 100 NTSC VITS Inserter Instruction Manual Manufacturers Cross Index, Electrical Parts (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer TK1989 GASK.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–7 Replaceable Electrical Parts List Component Number T ektronix Part Number Serial No.
Replaceable Electrical Parts 8–8 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1C1 281–0775–01 CAP ,FXD,CER:MCL;0.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–9 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1C57 281–0775–01 CAP ,FXD,CER:MCL;0.
Replaceable Electrical Parts 8–10 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–1 1 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1C157 281–0775–01 CAP ,FXD,CER:MCL;0.
Replaceable Electrical Parts 8–12 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–13 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1J9 131–0608–00 CONN,TERMINAL:PRESSFIT/PCB;MALE,STR,0.
Replaceable Electrical Parts 8–14 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1J51 131–0608–00 CONN,TERMINAL:PRESSFIT/PCB;MALE,STR,0.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–15 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts 8–16 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–17 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1R53 322–3193–00 RES,FXD:MET AL FILM;1K OHM,1%,0.
Replaceable Electrical Parts 8–18 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1R108 322–3085–07 RES,FXD:MET AL FILM;75 OHM,0.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–19 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1R158 322–3235–00 RES,FXD:MET AL FILM;2.
Replaceable Electrical Parts 8–20 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1R227 322–3001–00 RES,FXD:MET AL FILM;10 OHM,1%,0.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–21 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number A1TP7 214–4085–00 TERM,TEST POINT :0.
Replaceable Electrical Parts 8–22 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number 136–1038–00 SOCKET ,DIP:PCB;STR,28 POS,2 X 14,0.
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–23 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts 8–24 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–25 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts 8–26 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts VITS 100 NTSC VITS Inserter Instruction Manual 8–27 Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr .
Replaceable Electrical Parts 8–28 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Electrical Parts List (Cont.) Component Number Mfr . Part Number Mfr . Code Name & Description Serial No. Discont’d Serial No. Effective T ektronix Part Number 136–0925–00 B010230 SOCKET ,DIP:PCB;24 POS,2 X 12,0.
Diagrams.
.
VITS 100 NTSC VITS Inserter Instruction Manual 9–1 # .
9–2 VITS 100 NTSC VITS Inserter Instruction Manual C1 5 D5 A1 F5 C2 5 E4 A1 C6 C3 5 A1 A1 B5 C4 5 C2 A1 C4 C5 5 F2 A1 D5 C6 5 E2 A1 D5 C7 5 E2 A1 D5 C8 5 E2 A1 D5 C9 5 F2 A1 E5 C10 5 E2 A1 E5 C1 1 5.
VITS 100 NTSC VITS Inserter Instruction Manual 9–3 R31 5 B2 A1 C5 R32 5 B1 A1 B5 R33 5 B1 A1 B4 R34 5 C1 A1 B5 R35 5 C1 A1 C4 R36 5 C1 A1 B5 R37 5 C4 A1 F4 R38 5 C4 A1 C4 R39 5 D1 A1 C4 R40 5 D2 A1 .
9–4 VITS 100 NTSC VITS Inserter Instruction Manual # .
VITS 100 NTSC VITS Inserter Instruction Manual 9–5 20 22 20 22 +5V 11 22 ETSD[0..11] ETSD[0..11] TSD0 1A 2 1Y 4 1B 3 2A 5 2Y 7 2B 6 3A 11 3Y 9 3B 10 4A 14 4Y 12 4B 13 A/B 1 G 15 U7 74F157 D0 3 Q0 2 .
9–6 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–7 1L[0..3] 2L[0..3] TEST SIGNAL SELECT 1L0 1L1 1L2 1L3 2L0 2L1 +5V 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 S1 1 23456789 1 0 R6 10k U26-2 U26-5 U24-7 U70-19 3 VL0 3L[0..3] 4L[0..3] 5L[0..3] 6L[0..3] 7L[0.
9–8 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–9 SYNCTIME BLKCLK (BLANK) 1 - 2 FRONT P ANEL SELECTION ENABLED NO PLUG VITS ON LINES 17 THROUGH 30 2 - 3 VITS ON LINES 10 THROUGH 21 1 VLATCH IDCLOCK 0 IO9 CURSOR (CHARPRES) H[0.
9–10 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–1 1 3 HARDWARE WATCHDOG RESET +5V 8 +5V 1 23456789 1 0 R178 2.7k J6 1 - 2 NO RESET 2 - 3 HOLD IN RESET MODE P6 12 3 J6 0123 4567 1 2 4 8 ST 7 PBRST 1 TD 2 TOL RST 5 RST 6 GND 4 VCC U31 DS1232 89A B C D EF 5 1 2 4 8 S8 J4-3 3 DIAG[0.
9–12 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–13 1 15 L19 9uH C120 240pF R35 392 PROGRAM IN PROGIN +10V J10 PROGRAM GAIN ADJUST K2-4 7 R214 499 R18 15.0k R32 301.0 C3 10uF R33 100 R34 301.0 R36 2.00k +10V VIDIN- 1 VIDIN+ 3 S/H+ 5 S/H- 6 HCNTL 7 CHOLD 9 VIDOUT 13 S/H OUT 11 V+ 14 V- 12 GND 4 NC 2 NC 8 NC 10 U42 EL2090 VIDEO R100 7 R39 200.
9–14 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–15 J12 4 1 2 3 R217 162/260 CR14 R3 R4 C18 1.0M 0.1uF 20k +10V 1 2 3 4 5 J11 R1 C17 0.1uF 47.5 P33 1 2 3 4 5 -5V -5V R68 511 C39 150pF R69 20.
9–16 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–17 1 2 J50 FULL FIELD TEST SIGNAL L18 9uH C119 240pF R103 75.0 ETSD[0..11] U63A-3 U63A-2 6 U11 1 CLK8FSC ETSD[0.
9–18 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–19 LM393 FLOA TING COMMON F OR 220V 110V REAR P ANEL LF1 1 2 S10A C R143 22M F1 R144 1M 3 4 S10B RT1 5 RV1 330V CR12 C84 0.
9–20 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–21 +5V -5V +12VP -12VP +5VP -5VP +12V OUTPUT 150 MA 150 MA -12V OUTPUT +5V OUTPUT 4AMPS -5.2V OUTPUT 1.5 AMPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 J20 +12V -12V P20 P34 P35 P36 P37 P38 +12VP -12V +12V TP5 -12VP TP6 +12VP +12V C33 0.
9–22 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–23 # .
9–24 VITS 100 NTSC VITS Inserter Instruction Manual T able 9–3: A1 Component Locator 671–2132–00 through -04.
VITS 100 NTSC VITS Inserter Instruction Manual 9–25.
9–26 VITS 100 NTSC VITS Inserter Instruction Manual.
VITS 100 NTSC VITS Inserter Instruction Manual 9–27.
9–28 VITS 100 NTSC VITS Inserter Instruction Manual.
Replaceable Mechanical Parts.
.
VITS 100 NTSC VITS Inserter Instruction Manual 10–1 Replaceable Mechanical Parts This section contains a list of the replaceable mechanical components for the VITS 100 NTSC VITS Inserter .
Replaceable Mechanical Parts 10–2 VITS 100 NTSC VITS Inserter Instruction Manual Parts List Column Descriptions Column Column Name Description 1 Figure & Index Number Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow .
Replaceable Mechanical Parts VITS 100 NTSC VITS Inserter Instruction Manual 10–3 Manufacturers Cross Index, Mechanical Parts Mfr . Code Manufacturer Address City , State, Zip Code 01536 TEXTRON INC 1818 CHRISTINA ST ROCKFORD, IL 61 108 0J9P4 DEL T A ENGINEERING & MFG.
Replaceable Mechanical Parts 10–4 VITS 100 NTSC VITS Inserter Instruction Manual Replaceable Mechanical Parts List Fig. & Index Number T ektronix Part Number Serial No. Effective Serial No. Discont’d Qty Name & Description Mfr. Code Mfr . Part Number 1–1 21 1–01 19–00 15 SCREW ,MACH:4–40 X 0.
Replaceable Mechanical Parts VITS 100 NTSC VITS Inserter Instruction Manual 10–5 Replaceable Mechanical Parts List (Cont.) Fig. & Index Number Mfr . Part Number Mfr . Code Name & Description Qty Serial No. Discont’d Serial No. Effective T ektronix Part Number ST ANDARD ACCESSORIES 161–0216–00 1 CABLE ASSY ,PWR:3,18 AWG,2.
Replaceable Mechanical Parts 10–6 VITS 100 NTSC VITS Inserter Instruction Manual 1 2 1 3 4 5 6 7 8 9 10 11 12 13 14 14 15 16 17 18 19 20 14 1 14 21 22 23 14 24 25 26 27 28 A1 Figure 10–1: Exploded.
Appendix.
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VITS 100 NTSC VITS Inserter Instruction Manual A–1 Appendix A: Options This Appendix describes the available VITS 100 NTSC VITS Inserter options. Operation of the instrument is relatively straightfo.
Appendix A: Options A–2 VITS 100 NTSC VITS Inserter Instruction Manual Option 1J The VITS 100 NTSC VITS Inserter Option 1J contains the following three signals that are modifications of those in the.
Appendix A: Options VITS 100 NTSC VITS Inserter Instruction Manual A–3 0 –40 100 0 4.7 9.2 15.8 22.4 29.0 35.6 42.2 48.8 55.5 63.56 m s Figure A–2: Option 1J FCC Color Bar signal 0 –40 0 4.
Appendix A: Options A–4 VITS 100 NTSC VITS Inserter Instruction Manual T able A–2: Option 1J Factory Programmed VITS Insertions Line Field Signal 17 1 FCC Composite signal 17 2 Multiburst 18 1 and.
Appendix A: Options VITS 100 NTSC VITS Inserter Instruction Manual A–5 VITS Inserter Program In Program Out Monitor Out VITS Inserter Program In Program Out VM700A Option 1 T o plant P AL-M Signal w.
Appendix A: Options A–6 VITS 100 NTSC VITS Inserter Instruction Manual Option 2 VITS 100 NTSC VITS Inserter Option 2 generates Cable Sweep and Cable Multiburst signals to accommodate cable system measurements.
Appendix A: Options VITS 100 NTSC VITS Inserter Instruction Manual A–7 –40 0 9.5 15.7 17.2 23.2 30.6 45.4 52.8 54.2 61.98 m s 100 500mV 0mV 0.5 1.25 2.0 3.0 3.75 4.0 MHz 4.7 24.6 32.0 38.0 39.4 46.8 60.2 12.7 Figure A–5: Cable Multiburst 0 –40 0 4.
Appendix A: Options A–8 VITS 100 NTSC VITS Inserter Instruction Manual T able A–6 lists the factory configuration (through DIP switches S1 – S4) of the Option 2 VITS inserter .
Index.
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VITS 100 NTSC VITS Inserter Instruction Manual Index–1 Index A Accessories, 1–2 Auto VIRS, 1–2, 2–4 B Bypass, 2–1 lockout, 7–5 remote control of, 2–8, A–4 C Cable-specific VITS, A–6 .
Index Index–2 VITS 100 NTSC VITS Inserter Instruction Manual waveform diagrams, 3–12.
An important point after buying a device Tektronix VITS100 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Tektronix VITS100 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Tektronix VITS100 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Tektronix VITS100 you will learn all the available features of the product, as well as information on its operation. The information that you get Tektronix VITS100 will certainly help you make a decision on the purchase.
If you already are a holder of Tektronix VITS100, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Tektronix VITS100.
However, one of the most important roles played by the user manual is to help in solving problems with Tektronix VITS100. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Tektronix VITS100 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
