Equipment information

Tektronix TV110 CableScout Analyzer
Manufacturer:
Model:
TV110 CableScout
Date:
1997
Category:
Group:
Description:
Metallic Time-Domain Reflectometer

Information

The Tektronix TV110 CableScout MTDR is specifically intended for technicians and troubleshooting experts in the outside-plant cable TV and other coaxial cable test environments. The CableScout’s uses include: fault identification, fault location, cable installation, and cable maintenance. The TV110 CableScout is easy to use, high in accuracy, and will fully characterize coaxial cable up to 6,000 feet in length.

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Service Manual
Manual Type:
Service Manual
Pages:
92
Size:
655.69 Kbytes (671429 Bytes)
Language:
english
Revision:
Manual-ID:
070-8815-02
Date:
1997 07 01
Quality:
Electronic document, no scan, very well readable.
Upload date:
2019 09 15
MD5:
5b223d779c106e03d35a4cad844d5112
Downloads:
361

Information

1 Safety Instructions ... 1-1 1.1 Introduction ... 1-3 1.2 Safety Precautions ... 1-3 1.3 Caution and Warning Statements ... 1-3 1.4 Symbols ... 1-3 1.5 Impaired Safety ... 1-4 1.6 General Safety Information ... 1-4 2 Characteristics ... 2-1 2.1 Introduction ... 2-3 2.2 Dual Input Oscilloscope ... 2-3 2.2.1 Isolated Inputs A and B (Vertical) ... 2-3 2.2.2 Horizontal ... 2-4 2.2.3 Trigger and Delay ... 2-4 2.2.4 Automatic Connect&View Trigger ... 2-5 2.2.5 Edge Trigger ... 2-5 2.2.6 Isolated External Trigger ... 2-5 2.2.7 Video Trigger ... 2-5 2.2.8 Pulse Width Trigger ... 2-5 2.2.9 Continuous Auto Set ... 2-6 2.2.10 Automatic Capturing Scope Screens ... 2-6 2.3 Automatic Scope Measurements ... 2-6 2.3.1 General ... 2-6 2.3.2 DC Voltage (VDC) ... 2-6 2.3.3 AC Voltage (VAC) ... 2-6 2.3.4 AC+DC Voltage (True RMS) ... 2-7 2.3.5 Amperes (AMP) ... 2-7 2.3.6 Peak ... 2-8 2.3.7 Frequency (Hz) ... 2-8 2.3.8 Duty Cycle (DUTY) ... 2-8 2.3.9 Pulse Width (PULSE) ... 2-8 2.3.10 Vpwm (C versions only) ... 2-8 2.3.11 Power ... 2-9 2.3.12 Phase ... 2-9 2.3.13 Temperature (TEMP) ... 2-9 2.3.14 Decibel (dB) ... 2-9 2.4 Meter ... 2-10 2.4.1 Meter Input ... 2-10 2.4.2 Meter Functions ... 2-10 2.5 DMM Measurements on Meter Inputs ... 2-10 2.5.1 General ... 2-10 2.5.2 Ohms (Ω) ... 2-10 2.5.3 Continuity (CONT) ... 2-10 2.5.4 Diode ... 2-11 2.5.5 Temperature (TEMP) ... 2-11 2.5.6 DC Voltage (VDC) ... 2-11 2.5.7 AC Voltage (VAC) ... 2-11 2.5.8 AC+DC Voltage (True RMS) ... 2-11 2.5.9 Amperes (AMP) ... 2-12 2.6 Recorder ... 2-12 2.6.1 TrendPlot (Meter or Scope) ... 2-12 2.6.2 Scope Record ... 2-12 2.7 Zoom, Replay and Cursors ... 2-13 2.7.1 Zoom ... 2-13 2.7.2 Replay ... 2-13 2.7.3 Cursor Measurements ... 2-13 2.8 Miscellaneous ... 2-13 2.8.1 Display ... 2-13 2.8.2 Power ... 2-13 2.8.3 Probe Calibration ... 2-14 2.8.4 Memory ... 2-14 2.8.5 Mechanical ... 2-14 2.8.6 Optical Interface Port ... 2-14 2.9 Environmental ... 2-14 2.10 Safety ... 2-15 2.11 10:1 Probe VPS200 ... 2-17 2.11.1 Safety ... 2-17 2.11.2 Electrical specifications ... 2-17 2.11.3 Environmental ... 2-17 2.12 Electromagnetic Immunity ... 2-18 3 Circuit Description ... 3-1 3.1 Introduction ... 3-3 3.2 Block Diagram ... 3-3 3.3 Start-up Sequence, Operating Modes ... 3-7 3.4 Detailed Circuit Descriptions ... 3-9 3.4.1 Scope Channel A - Scope Channel B ... 3-9 3.4.2 Meter/Ext Trigger Channel ... 3-12 3.4.3 Sampling&Triggering (S-ASIC) ... 3-15 3.4.4 S-ASIC supply ... 3-19 3.4.5 ADC’s ... 3-19 3.4.6 Digital Control ... 3-20 3.4.7 LCD Control ... 3-22 3.4.8 Power ... 3-23 3.4.9 Slow ADC, RS232 Serial Interface, LCD Backlight ... 3-28 4 Performance Verification ... 4-1 4.1 Introduction ... 4-3 4.2 Equipment Required For Verification ... 4-3 4.3 General Instructions ... 4-3 4.4 Operating Instructions ... 4-4 4.4.1 Resetting the test tool ... 4-4 4.4.2 Navigating through menu’s ... 4-4 4.4.3 Creating Test Tool Setup1 ... 4-5 4.5 Display and Backlight Test ... 4-5 4.6 Scope Input A&B Tests ... 4-7 4.6.1 Input A&B Vertical Accuracy Test ... 4-7 4.6.2 Input A&B DC Voltage Accuracy Test ... 4-9 4.6.3 Input A&B AC Voltage Accuracy Test (LF) ... 4-11 4.6.4 Input A & B AC Coupled Lower Frequency Test ... 4-12 4.6.5 Input A and B Peak Measurements Test ... 4-13 4.6.6 Input A&B Frequency Measurement Accuracy Test ... 4-14 4.6.7 Input A&B Phase Measurements Test ... 4-15 4.6.8 Time Base Test ... 4-16 4.6.9 Input A Trigger Sensitivity Test ... 4-18 4.6.10 Input A AC Voltage Accuracy (HF) & Bandwidth Test ... 4-19 4.6.11 Input B Trigger Sensitivity Test ... 4-20 4.6.12 Input B AC Voltage Accuracy (HF) & Bandwidth Test ... 4-21 4.6.13 Video test using the Video Pattern Generator ... 4-22 4.6.14 Video test using SC600 Scope Calibration Option ... 4-25 4.7 External Trigger Level Test ... 4-27 4.8 Meter (DMM) Tests ... 4-28 4.8.1 Meter DC Voltage Accuracy Test ... 4-28 4.8.2 Meter AC Voltage Accuracy & Frequency Response Test ... 4-29 4.8.3 Continuity Function Test ... 4-30 4.8.4 Diode Test Function Test ... 4-30 4.8.5 Ohms Measurements Test ... 4-30 4.9 Probe Calibration Generator Test ... 4-32 5 Calibration Adjustment ... 5-1 5.1 General ... 5-3 5.1.1 Introduction ... 5-3 5.1.2 Calibration number and date ... 5-3 5.1.3 General Instructions ... 5-3 5.1.4 Equipment Required For Calibration ... 5-4 5.2 Calibration Procedure Steps ... 5-4 5.3 Starting the Calibration ... 5-4 5.4 Contrast Calibration Adjustment ... 5-6 5.5 Warming Up & Pre-Calibration ... 5-7 5.6 Final Calibration ... 5-8 5.6.1 Input A LF-HF Gain ... 5-8 5.6.2 Input B LF-HF Gain ... 5-9 5.6.3 Input A&B LF-HF Gain ... 5-11 5.6.4 Input A&B Position ... 5-12 5.6.5 Input A&B Volt Gain ... 5-13 5.6.6 DMM Volt Gain ... 5-14 5.6.7 Input A& B, and DMM Zero ... 5-15 5.6.8 DMM Ohm Gain ... 5-16 5.6.9 Calculate Gain ... 5-17 5.7 Save Calibration Data and Exit ... 5-17 5.8 Probe Calibration ... 5-19 6 Disassembling the Test Tool ... 6-1 6.1. Introduction ... 6-3 6.2. Disassembly & Reassembly Procedures ... 6-3 6.2.1 Required Tools ... 6-3 6.2.2 Removing the Tilt Stand & Hang Strap ... 6-3 6.2.3 Replacing the Side-Strap, Changing the Side-Strap Position ... 6-3 6.2.4 Opening the Test Tool, Removing the Battery ... 6-3 6.2.5 Removing the Main PCA Unit and the Fan ... 6-5 6.2.6 Removing the Display Assembly ... 6-6 6.2.7 Replacing the LCD Window/Decal ... 6-7 6.2.8 Removing the Keypad and Keypad Foil ... 6-7 6.2.9 Disassembling the Main PCA Unit ... 6-7 6.2.10 Reassembling the Main PCA Unit ... 6-8 6.2.11 Reassembling the Test Tool ... 6-9 7 Corrective Maintenance ... 7-1 7.1 Introduction ... 7-3 7.2 Starting Fault Finding. ... 7-4 7.3 Charger Circuit ... 7-5 7.4 Starting with a Dead Test Tool ... 7-7 7.4.1 Test Tool Completely Dead ... 7-7 7.4.2 Test Tool Software Does not Run. ... 7-8 7.4.3 Software Runs, Test Tool not Operative ... 7-8 7.5 Miscellaneous Functions ... 7-8 7.5.1 Display and Back Light ... 7-8 7.5.2 Fly Back Converter ... 7-10 7.5.3 Slow ADC, +3V3SADC ... 7-11 7.5.4 Keyboard ... 7-12 7.5.5 Optical Port (Serial RS232 Interface) ... 7-13 7.5.6 Channel A, Channel B Measurements ... 7-13 7.5.7 Meter Channel (Ext Trigger, Probe Cal) ... 7-15 7.5.8 Input Signal Acquisition ... 7-17 7.5.9 ADC’s ... 7-19 7.5.10 Digital Control & Memory ... 7-20 7.5.11 Buzzer Circuit ... 7-20 7.5.12 RAM Test ... 7-21 7.5.13 Power ON/OFF ... 7-22 7.5.14 Battery ... 7-22 7.6 Loading Software ... 7-23 8 List of Replaceable Parts ... 8-1 8.1 Introduction ... 8-3 8.2 How to Obtain Parts ... 8-3 8.3 Service Centers ... 8-3 8.4 Final Assembly Parts ... 8-4 8.5 Main PCA Unit Parts ... 8-6 8.6 Main PCA Parts ... 8-8 8.7 Accessories ... 8-30 9 Circuit Diagrams ... 9-1 9.1 Introduction ... 9-3 9.2 Tracing signals in circuit diagrams ... 9-3 9.3 Locating Parts & Test Points ... 9-3 9.4 Diagrams ... 9-6 10 Modifications ... 10-1 10.1 General ... 10-3 10.2 Software modifications ... 10-3 10.3 Hardware modifications ... 10-3 10.4 Main PCA Unit Versions, Software Versions. ... 10-4

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