Tektronix 684A User Manual
Table of Contents
TDS 684A, TDS 744A, & TDS 784A Service Manual
iii
List of Figures
Figure 2–1: Map of Display Functions
2–8
. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1: Map of Display Functions
4–3
. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Verifying Adjustments and Signal-Path Compensation
4–6
.
Figure 4–3: Universal Test Hookup for Functional Tests
4–8
. . . . . . . . . .
Figure 4–4: Measurement of DC Offset Accuracy at Zero Setting
4–29
. . .
Figure 4–5: Initial Test Hookup
4–30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–6: Measurement of DC Accuracy at Maximum Offset
and Position
4–32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–7: Initial Test Hookup
4–34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–8: Measurement of Analog Bandwidth
4–36
. . . . . . . . . . . . . . . . .
Figure 4–9: Initial Test Hookup
4–38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–10: Measurement of Channel Delay – TDS 684A Shown
4–40
. .
Figure 4–11: Initial Test Hookup
4–42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–12: Measurement of Accuracy
— Long-Term and Delay Time
4–44
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–13: Initial Test Hookup
4–45
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–14: Measurement of Time Accuracy for Pulse and
Glitch Triggering
4–47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–15: Initial Test Hookup
4–48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–16: Measurement of Trigger-Level Accuracy
4–50
. . . . . . . . . . . .
Figure 4–17: Initial Test Hookup
4–53
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–18: Measurement of Trigger Sensitivity
— 50 MHz Results Shown on a TDS 684A Screen
4–54
. . . . . . . . . . . .
Figure 4–19: Initial Test Hookup
4–57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–20: Measurement of Main Trigger Out Limits
4–59
. . . . . . . . . . .
Figure 4–21: Initial Test Hookup
4–61
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–22: Measurement of Probe Compensator Frequency
4–62
. . . . .
Figure 4–23: Subsequent Test Hookup
4–63
. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–24: Measurement of Probe Compensator Amplitude
4–64
. . . . .
Figure 4–25: Jitter Test Hookup
4–66
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–26: Jitter Test Displayed Waveform – TDS 684A Shown
4–67
. .
Figure 4–27: Jitter Test When Completed – TDS 684A Shown
4–68
. . . . .
Figure 4–28: Triggered Signal Range Test – 300 mV
4–70
. . . . . . . . . . . . . .
Figure 4–29: Triggered Signal Range Test – 75 mV
4–71
. . . . . . . . . . . . . . .
Figure 4–30: 60 Hz Rejection Test Hookup
4–72
. . . . . . . . . . . . . . . . . . . . . .