Tektronix TLA600 Series, Руководство по обслуживанию

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Performance Verification: Ajustment/Verification Fixture
TLA600 Series Logic Analyzer Service Manual
4- 35
b. Set up the Horizontal menu as follows:
H
Time Base Main
H
Record Length 5000
H
Horizontal Scale Main Scale @ 2 ns/div
c. Set up the Trigger menu as follows:
H
Source CH2
H
Coupling DC
H
Slope +
H
Level 700 mV
H
Mode Normal
d.
Set up the Measure menu as follows:
H
Select Measurement for CH1 Measure
H
Gating On
e. Set up the Cursor menu as follows:
H
Function V Bars
f. Set up the Acquire menu as follows:
H
Acquisition Mode Average 90
H
Repetitive Signal On
4. Connect the CH2 probe of the oscilloscope to J1 pin-2 on the adjustment/
verification fixture.
5. Select Deskew from the Vertical menu of the oscilloscope.
NOTE
. Observe proper polarity when doing the following steps. See Figure 4--9
on page 4--23 to identify the ground side of the components being measured.
6. Connect the CH1 probe of the oscilloscope to the custom probe tip adapter
and measure the signal across R67.
7. Press the Run/Stop button to stop the acquisition and read the measurement.
8. Use the large knob at the upper right of the panel to adjust delay until the
leading edges of the two waveforms coincide and the displayed value of
CH1-CH2 delay is averaged around 0.