Tektronix TDS7054, Service Manual

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Brief Procedures
4- 10
TDS7104 & TDS7054 Service Manual
Equipment
required One BNC cable, such as Tektronix part number 012-0076-00
Prerequisites None
1. Initialize the oscilloscope: Push the front-panel DEFAULT SETUP button.
2. Hook up the signal source: Connect the BNC cable from the probe com-
pensation output to the CH 1 input as shown in Figure 4--4.
TDS7000 oscilloscope
BNC cable from PROBE
COMPENSATION output to
CH 1 input
Figure 4- 4: Setup for time base test
3. Set up the oscilloscope: Push the front panel AUTOSET button.
4. Set the time base: Set the horizontal SCALE to 200 s/div . The time-base
readout is displayed at the bottom of the graticule.
5.
Verify that the time base operates:
Confirm the following statements.
H
One period of the square-wave probe-compensation signal is about five
horizontal divisions on-screen for the 200
s/div horizontal scale setting.
H
Rotating the horizontal SCALE knob clockwise expands the waveform
on-screen (more horizontal divisions per waveform period), counter-
clockwise rotation contracts it, and returning the horizontal scale to
200
s/div returns the period to about five divisions.
H
The horizontal POSITION knob positions the signal left and right
on-screen when rotated.
6. Verify horizontal delay:
a. Center a rising edge on screen:
H
Set the horizontal POSITION knob so that the rising edge where the
waveform is triggered is lined up with the center horizontal
graticule.
Verify the Time Base