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Service
Manual
3.2.5 Start-up Sequence, Operating Modes
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3-7
3.3 Detailed Circuit Descriptions
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3-9
3.3.1 Power Circuit
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3-9
3.3.2 Channel A - Channel B Measurement Circuits
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3-15
3.3.3 Trigger Circuit
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3-20
3.3.4 Digital Circuit and ADC’s
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3-25
Performance Verification
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4-1
4.1 Introduction
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4-3
4.2 Equipment Required For Verification
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4-3
4.3 How To Verify
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4-3
4.4 Display and Backlight Test
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4-4
4.5 Input A and Input B Tests
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4-5
4.5.1 Input A and B Base Line Jump Test
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4-6
4.5.2 Input A Trigger Sensitivity Test
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4-7
4.5.3 Input A Frequency Response Upper Transition Point Test
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4-8
4.5.4 Input A Frequency Measurement Accuracy Test
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4-9
4.5.5 Input B Frequency Measurement Accuracy Test
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4-10
4.5.6 Input B Frequency Response Upper Transition Point Test
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4-10
4.5.7 Input B Trigger Sensitivity Test
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4-11
4.5.8 Input A and B Trigger Level and Trigger Slope Test
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4-12
4.5.9 Input A and B DC Voltage Accuracy Test
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4-14
4.5.10 Input A and B AC Voltage Accuracy Test
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4-16
4.5.11 Input A and B AC Input Coupling Test
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4-17
4.5.12 Input A and B Volts Peak Measurements Test
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4-18
4.5.13 Input A and B Phase Measurements Test
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4-19
4.5.14 Input A and B High Voltage AC/DC Accuracy Test
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4-20
4.5.15 Resistance Measurements Test
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4-21
4.5.16 Continuity Function Test
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4-22
4.5.17 Diode Test Function Test
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4-23
4.5.18 Capacitance Measurements Test
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4-23
4.5.19 Video Trigger Test
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4-24
Calibration Adjustment
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5-1
5.1 General
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5-3
5.1.1 Introduction
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5-3
5.1.2 Calibration number and date
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5-3
5.1.3 General Instructions
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5-3
5.2 Equipment Required For Calibration
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5-4
5.3 Starting Calibration Adjustment
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5-4
5.4 Contrast Calibration Adjustment
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5-6
5.5 Warming Up & Pre-Calibration
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5-7
5.6 Final Calibration
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5-7
5.6.1 HF Gain Input A&B
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5-7
5.6.2 Delta T Gain, Trigger Delay Time & Pulse Adjust Input A
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5-9
5.6.3 Pulse Adjust Input B
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5-10
5.6.4 Gain DMM (Gain Volt)
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5-10
5.6.5 Volt Zero
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5-12
5.6.6 Zero Ohm
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5-12
5.6.7 Gain Ohm
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5-13
5.6.8 Capacitance Gain Low and High
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5-14
5.6.9 Capacitance Clamp & Zero
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5-14
5.6.10 Capacitance Gain
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5-15
5.7 Save Calibration Data and Exit
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5-15