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Performance Verification
TDS3000 Series Service Manual
4–11
This test checks the time base accuracy.
1. Connect the output of the leveled sine wave generator to the oscilloscope
channel 1 input as shown below.
Time mark
generator
Ch 1
TDS3000 Series Oscilloscope
2. Push the SAVE/RECALL menu button.
3. Push the Recall Factory Setup screen button and then push the OK
Confirm Factory Init screen button.
4. Set the time mark generator period to 10 ms. Use a time mark waveform
with a fast rising edge.
5. If adjustable, set the time mark amplitude to approximately 1 V
p-p
.
6. Push the DELAY button to turn delay off.
7. Push the vertical MENU button.
8. Push the Coupling screen button and select 50 input resistance.
9. Set the vertical SCALE to 500 mV/div.
10. Set the horizontal SCALE to 2 ms/div.
11. Adjust the vertical POSITION control to center the time mark signal on the
screen.
12. Adjust the trigger LEVEL as necessary to obtain a triggered display.
13. Adjust the horizontal POSITION control to move the trigger location to the
center of the screen (50%).
14. Push the DELAY button to turn delay on.
Check Sample Rate and
Delay Time Accuracy