Tektronix TLA600 Series, Руководство по обслуживанию

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Adjustment/Verification Fixture Adjustment
5- 16
TLA600 Series Logic Analyzer Service Manual
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 Off
e. Set up the Cursor menu as follows:
H
Function V Bars
f. Set up the Acquire menu as follows:
H
Acquisition Mode Sample
H
Repetitive Signal On
3. Connect the CH2 probe to J4 and trigger on the rising edge of pulse.
4. Connect the CH1 probe to R85 (CLK0) and position the rising-edge on the
center graticule.
5. Connect the CH1 probe to R67 (P6434 A) and record the positive delay
between R85 and R67 using the vertical cursor bars on the oscilloscope.
6. Using the delay taps on Delay CLK1 ADJ, add or subtract the appropriate
delay to ensure zero skew (
±
25 ps) between R85 and R67 (P6434 A). See
Note on page 5--14.
7. Connect the CH1 probe to R39 (P6434 B) and record the positive delay
between R85 and R39.
8. Using the delay taps on Delay CLK2 ADJ, add or subtract the appropriate
delay to ensure zero skew (
±
25 ps) between R85 and R39 (P6434 B). See
Note on page 5--14.
9. Connect the CH1 probe to R321 (P6434 deskew CLK) and record the
positive delay between R85 and R321.
10.
Using the delay taps on Delay DESKEW CLK ADJ (next to P6434) add or
subtract the appropriate delay to ensure zero skew (
±
25 ps) between R85 and
R321 (P6434 deskew CLK). See Note on page 5--14.