Electrical Sampling Modules
4–82
CSA8000 & TDS8000 Instruments and Sampling Modules
For example: if Max = +11 m
r
and HiRef = -5 m
r
,
positive aberration (%) = (+11 -(-5)) * 0.1 = +1.6
j.
Check that the aberrations calculate in step i for the 400 ps to 5 ns region
after the edge are within
3%. If recording data on the Test Record,
enter the largest (positive or negative) value.
3. Check the range >5ns after the edge (aberrations within
1%).
a. Change the Horizontal Scale to 10 ns/division.
b. Adjust Horizontal Position so the waveform rising edge is at the second
vertical graticule (assuming that the first graticule is the left edge of the
display).
c.
In the Meas Setup dialog box for Meas2 set Gate G1 to 15%.
d. In the Meas Setup dialog box for Meas1 set Gate G1 to 15%.
e.
The Max and Min measurements are now set to include the region of 5
ns to 90 ns after the edge. The aberration specification over this region is
1%, which is
10 m
r
for a 1
r
step. The reference level is HiRef,
from step 5e on page 4–79 of the setup procedure.
f.
Calculate the peak aberrations in percent using the formulas (with Max,
Min, and HiRef in m
r
, not
r
):
H
positive aberration (%) = (Max - HiRef) * 0.1
H
negative aberration (%) = (Min - HiRef) * 0.1
g. Check that the aberrations calculated in step f for the region >5 ns after
the edge are within
1%. If recording data on the Test Record, record
the largest (positive or negative) value.
4. Repeat the Setup and Test procedures for the TDR negative edge polarity. To
do this check, select negative edge polarity after selecting TDR Preset in
Setup step 5a on page 4–78. No other changes to the procedures are needed,
since in rho (
r
) mode the display does not invert when the TDR edge
polarity is changed.
5. Repeat the Setup and Test procedures for channel 2, both polarities.
End of Procedure
Содержание CSA8000 Series
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Страница 18: ...Service Safety Summary xiv CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 22: ...Preface xviii CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 59: ...80C00 Modules Specifications 1 36 CSA8000 TDS8000 Instruments and Sampling Modules back ...
Страница 63: ...80A01 Module Specifications 1 40 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 74: ...Installation 2 10 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 106: ...Performance Verification Procedures 4 2 CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 122: ...Brief Procedures 4 18 CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 126: ...Performance Tests 4 22 CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 218: ...80A01 Trigger Preamplifier Module 4 114 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 231: ...Maintenance 6 6 CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 291: ...Removal and Installation Procedures 6 66 CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 307: ...Repackaging Instructions 6 82 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 315: ...Electrical Parts List 8 2 CSA8000 TDS8000 Instruments and Sampling Modules ...
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