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Acquiring and Displaying Waveforms

3–4

TDS 684A, TDS 744A, & TDS 784A User Manual

Probe Compensated Correctly

Probe Overcompensated

Probe Undercompensated

Figure 3–1: How Probe Compensation Affects Signals

4. If you need to change the input impedance, press Coupling (main). Then

toggle the side menu selection W to get the correct impedance.

5. TDS 700A models only: Press SHIFT ACQUIRE MENU ➞ Mode (main) ➞

Hi Res (side).

6. TDS 684A only: Press SHIFT ACQUIRE MENU ➞ Mode (main) ➞

Average (side). Use the keypad to set Averages to 5.

7. Adjust the probe until you see a square wave with a perfectly flat top on the

display. Figure 3–2 shows where the adjustment is located.

Figure 3–2: P6139A Probe Adjustment

Table of Contents10
Table 1-1: Key Features of the TDS Oscilloscopes23
Figure 1-1: Rear Panel Controls Used in Start up26
Figure 1-2: ON/STBY Button27
Table 1-2: Fuse and Fuse Cap Part Numbers27
Figure 2-1: Connecting a Probe for the Examples (P6245 Shown)38
Figure 2-2: SETUP Button Location39
Figure 2-3: the Setup Menu39
Figure 2-4: Trigger Controls40
Figure 2-5: the Display after Factory Initialization41
Figure 2-6: the VERTICAL and HORIZONTAL Controls42
Figure 2-7: TRIGGER Controls43
Figure 2-8: AUTOSET Button Location43
Figure 2-9: the Display after Pressing Autoset44
Figure 2-10: Display Signals Requiring Probe Compensation44
Figure 2-11: the Channel Buttons and Lights45
Figure 2-12: the Vertical Main Menu and Coupling Side Menu46
Figure 2-13: the Menus after Changing Channels47
Figure 2-14: Measure Main Menu and Select Measurement Side Menu49
Figure 2-15: Four Simultaneous Measurement Readouts50
Figure 2-16: General Purpose Knob Indicators51
Figure 2-17: Snapshot of Channel 152
Figure 2-18: Save/Recall Setup Menu54
Figure 3-1: How Probe Compensation Affects Signals60
Figure 3-2: P6139A Probe Adjustment60
Table 3-1: Autoset Defaults62
Figure 3-3: the Channel Readout64
Figure 3-4: Waveform Selection Priority65
Figure 3-5: Scaling and Positioning66
Figure 3-6: Vertical Readouts and Channel Menu67
Figure 3-7: Record View and Time Base Readouts69
Figure 3-8: Horizontal Controls70
Figure 3-9: Acquisition: Input Analog Signal, Sample, and Digitize73
Figure 3-10: Several Points May be Acquired for each Point Used73
Table 3-2: How Interleaving Affects Sample Rate75
Table 3-3: Additional Resolution Bits78
Table 3-4: TDS 744A Sampling Mode Selection80
Table 3-5: TDS 784A Sampling Mode Selection81
Table 3-6: XY Format Pairs88
Table 3-7: Pattern and State Logic118
Table 3-8: Pulse Trigger Definitions127
Table 3-9: Measurement Definitions144
Table 3-10: Probe Cal Status165
Table A-2: Standard Accessories230
Table A-1: Options231
Table A-3: Optional Accessories231
Table A-4: Accessory Software232
Table D-1: Factory Initialization Defaults250

Brand	Tektronix
Model	TDS 684A
Category	Test Equipment
Language	English

Tektronix TDS 684A User Manual

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