Performance Tests
TDS7104 & TDS7054 Service Manual
4-59
Check long-term sample
rates and delay time
accuracies against limits.
4
Align the trigger T to the
center graticule line.
1
Set horizontal mode.
2
Set horizontal scale
and delayed time.
3
Figure 4- 25: Measurement of accuracy - long-term and delay t ime
3. Disconnect the hookup: Disconnect the cable from the generator output at
the input connector of CH 1.
4. Install the test hookup and preset the instrument controls:
a. Hook up the test-signal source: Connect, through a 50 Ω precision
coaxial cable, the input of CH 1 and REF OUT.
b. Initialize the oscilloscope: Press the DEFAULT SETUP button.
5. Confirm reference is within limits for logic levels:
a. Display the test signal:
H Set the Vertical SCALE to 1 V.
H Use the Vertical POSITION knob to center the display on screen.
b. Measure logic levels:
H From the button bar, touch MEAS and select the Ampl tab.
H Touch the High and Low buttons.
H Touch the Close button.
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