Tektronix - 1740A - Analyseur
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Matériels:
1740A
Date:
1994
Catégorie:
Groupe:
Sous-groupe:
Information
The 1740A/1750A/1760-Series is a half-rack width by three-rack-unit high instrument. It is a versatile waveform monitor/vectorscope for composite and component television signals. Most circuitry and the mechanical components are shared throughout the series. In addition to NTSC and PAL standard versions, a dual standard (NTSC/PAL) version is available.
These instruments employ a bright, post accelerated CRT with lighted internal graticule. The parallax free internal graticule structure contains targets and markings for both the vector and waveform functions. The “Lightning” graticule, for the 1760-Series, is electronic, in order to keep from complicating the waveform/vector graticule. Option 74, which uses a white phosphor (P4) CRT, is available for all three instrument series.
These monitors are microprocessor controlled to provide greater versatility. Switch settings, affecting the operation of the instrument, are continuously polled by the processor, with any change in status acted upon immediately. Current operating conditions are preserved in Non-Volatile Random Access Memory (NOVRAM), which returns the front panel settings to the current settings, in the event of power interruption (either accidental or routine power down).
Many operational measurements are performed on a repetitive basis, and these instruments provide a method of repeating common measurements by simply selecting stored measurement settings from a CRT menu list. The common measurement front panel settings can be stored and named by the user. Measurement specific, front-panel settings can be recalled by pushing the front-panel Preset Menu button and selecting the desired preset by name or number.
Many functions that were formerly selected by changing internal jumpers and/or wire straps are now accessible through on screen menu selections. Menus are selected by pushing the appropriate front panel Menu selection. Menu items are then selected by pushing one or more of the assignable switches and/or rotating the assigned front-panel control. Once selected these menu choices are retained until changed by subsequent reconfiguration.
The front panel provides both assignable switches (located next to the CRT) and controls (located beneath the CRT), that operate with CRT readout to increase functionality without cluttering the limited front panel area. Function of these switches and controls is dictated by the front-panel Display and initial Menu choices.
The 1740A-Series is a full capability waveform/vector monitor that also provides audio and time code measurements. The 1750A-Series has all of the capabilities of the 1740A-Series, with the addition of SCH phase measurements.
3 Manuels
Manuel d'entretien
Type manuel:
Manuel d'entretien
Pages:
375
Taille:
32,1 Mio
Langue:
anglais
Révision:
Manuel-ID:
070-8469-00
Date:
octobre 1994
Qualité:
Document scanné, tout est lisible.
Date de téléchargement:
14 septembre 2019
MD5:
e432a8ef-8cc3-6847-35b5-a2f40e66762f
Information
Contents
Specifications
Specification..............................................................................................1-1
Characteristics Tables............................................................................................1-2
Operating Information
Installation................................................................................................2-1
Mechanical Installation ........................................................................................2-2
Electrical Installation............................................................................................2-7
Rear Panel Connectors..........................................................................................2-8
Remote Connector................................................................................................2-10
Remote Connector Converter................................................................................2-12
RS232 Connector..................................................................................................2-13
Installing Software................................................................................................2-13
Procedure for Loading Software ..........................................................................2-15
Calibration of New Features ................................................................................2-19
Special Recovery Procedure for Power Loss During Upgrade ............................2-20
Operating Instructions ............................................................................2-21
Getting Started......................................................................................................2-21
Operating Instructions ..........................................................................................2-22
General Menu Information....................................................................................2-23
Functional Overview ............................................................................................2-24
Displaying a Signal ..............................................................................................2-27
Theory of Operation
Block Diagram Description ....................................................................3-1
Block Diagram 1 Input and Waveform Monitor ..................................................3-1
Block Diagram 2 Vector - SCH - Component....................................................3-4
Block Diagram 3 Microprocessor and Line Rate Controller................................3-6
Circuit Theory..........................................................................................3-9
Diagrams 1 & 2 Channel A and Channel B Inputs..............................................3-9
Diagram 3 Vertical Input ......................................................................................3-10
Diagram 4 Vertical Output....................................................................................3-11
Diagram 5 Horizontal............................................................................................3-12
Diagram 6 Microprocessor....................................................................................3-14
Diagram 7 Dynamic Control ................................................................................3-15
Diagram 8 Readout ..............................................................................................3-16
Diagram 9 DACS & Serial....................................................................................3-16
Diagram 10 Remote & 1760-Series / XROM Bus Connectors............................3-17
Diagram 11 Z-Axis & Control..............................................................................3-18
Diagram 12 Front Panel........................................................................................3-19
Diagram 13 DACS & Digital Control..................................................................3-19
Diagram 14 Subcarrier Regenerator ....................................................................3-20
Diagram 15 Phase Shifter ....................................................................................3-22
Diagram 16 Demodulator......................................................................................3-23
Diagram 17 Internal SCH ....................................................................................3-24
Diagram 18 Reference SCH..................................................................................3-26
Diagram 19 Component Inputs, Transcoders, & RGB Outputs............................3-29
Diagram 20 Component Control and Switching ..................................................3-30
Diagram 21 Low Voltage Power Supply ..............................................................3-32
Diagram 22 High Voltage Power Supply..............................................................3-35
Diagram 23 XROM ..............................................................................................3-37
Performance Verification
Performance Verification........................................................................4-1
Recommended Equipment List ............................................................................4-1
Performance Check Procedure Short-Form Reference ........................................4-7
Performance Check Procedure..............................................................................4-10
Adjustment Procedures
Adjustment Procedure ............................................................................5-1
Recommended Equipment List ............................................................................5-1
Getting Started......................................................................................................5-9
Functional Description of PC Display..................................................................5-11
Circuit Board Adjustment Locations....................................................................5-13
Waveform Illustrations..........................................................................................5-16
Maintenance
Maintenance..............................................................................................6-1
Service Options ....................................................................................................6-1
Tektronix Service ..........................................................................................6-1
Preventive Maintenance........................................................................................6-1
Cleaning ........................................................................................................6-1
Replacing and Cleaning the Air Filter ..........................................................6-2
Visual Inspection............................................................................................6-2
Static-Sensitive Components ........................................................................6-3
Determining the Software Version................................................................6-4
Performance Checks and Readjustments ......................................................6-4
General Troubleshooting Techniques............................................................6-4
Line Fuse Replacement ........................................................................................6-6
Specific Troubleshooting Techniques ..................................................................6-6
Power Supply ................................................................................................6-6
Troubleshooting Procedure............................................................................6-6
Introduction....................................................................................................6-6
Low Volts Supply ..........................................................................................6-7
High Volts Supply..........................................................................................6-11
Corrective Maintenance..........................................................................6-13
Tektronix Service Offerings..................................................................................6-13
Factory Replacement Parts............................................................................6-15
Etched Circuit B oards ..........................................................................................6-16
Major Assembly Interconnection..................................................................6-18
Mechanical Disassembly/Assembly......................................................................6-19
Bezel Removal ..............................................................................................6-19
Graticule Light Removal and Replacement ..................................................6-20
CRT Removal................................................................................................6-22
Replacement of the CRT................................................................................6-23
Removing the Rear Panel and the Input and BNC Circuit Boards................6-24
Removing the Front Panel and the Front Panel Circuit Board......................6-26
Removing the Main Board ............................................................................6-27
Removing the Power Supply Board..............................................................6-29
Removing the Vector Board ..........................................................................6-30
Removing the SCH Board (1750A-Series & 1760-Series Option SC only) 6-31
Removing the XROM Board (1740A-Series & 1750A-Series only) ..........6-31
Removing the Component Board (1760-Series only) ..................................6-32
Repackaging..........................................................................................................6-33
Identification Tag ..........................................................................................6-33
Repackaging for Shipment............................................................................6-33
Options
Options......................................................................................................7-1
Orderable Options ................................................................................................7-1
Power Cord Options......................................................................................7-1
CRT Options..................................................................................................7-3
Cabinets ................................................................................................................7-3
Plain Cabinet (1700F00)................................................................................7-3
Carrying Case (1700F02) ..............................................................................7-4
Side-by-Side Rack Adapter (1700F05)..........................................................7-4
Blank Panel (1700F06)..................................................................................7-5
Utility Drawer (1700F07)..............................................................................7-6
Ordering................................................................................................................7-6
Electrical Parts List Diagrams Mechanical Parts List Change Information
Glossary...................................... Glossary-1
Index ......................................... Index-1
Téléchargements:
1736
Manuel utilisateur
Type manuel:
Manuel utilisateur
Pages:
162
Taille:
1,8 Mio
Langue:
anglais
Révision:
Manuel-ID:
070-8470-06
Date:
Qualité:
Document électronique, pas de scan, très bien lisible.
Date de téléchargement:
15 septembre 2019
MD5:
ce1ebb1e-8121-876d-331b-40c51ac36c99
Information
User Manual
Instrument controls and readouts appear in ALL CAPITALS .
Topics covered in the user manual are as follows:
Introduction
Getting Started
Operation Basics
Making Measurements
Appendix A provides instrument specifications, both
electrical and mechanical.
Appendix B describes remote control interfaces.
Appendix C covers routine service procedures, such as
replacing fuses and graticule light bulbs.
The appendixes are followed by a glossary of specialized
terms and an index.
Téléchargements:
2092
Fiche technique
Type manuel:
Fiche technique
Pages:
8
Taille:
3,0 Mio
Langue:
anglais
Révision:
Manuel-ID:
Date:
juillet 1996
Qualité:
Document scanné, tout est lisible.
Date de téléchargement:
4 janvier 2025
MD5:
d9c3984e-e54c-24f6-a757-fe79aed82203
Téléchargements:
11