CSA8000 & TDS8000 Instruments and Sampling Modules
4–83
Optical Sampling Modules
The following performance verification procedures for the optical sampling
modules check the characteristics that are shown as checked specifications
(
n
symbol) in Table 1–18 and Table 1–19 of the Optical Modules Specifications
starting on page 1–18.
Be sure you have performed the appropriate Prerequisites on page 4–19 before
doing any procedures in this section.
Dark Level & Vertical Equivalent Optical Noise
This procedure checks the dark level, which is the offset in the optical channel
caused by thermal variations or finite leakage current. This procedure also checks
the vertical equivalent optical noise. The checks are made with vertical offset set
to zero and no optical signal input to the optical sampling module (dustcap
installed on the OPTICAL INPUT).
Equipment
required
CSA8000/TDS8000
Terminator, 50
W
coaxial, SMA male (item 7); used with optical
sampling modules with clock recovery (CR)
Prerequisites
See page 4–19
Install the test hookup and preset the CSA8000/TDS8000 controls:
1. Install the 80C0X Optical Sampling Module into Channel 1 of the TDS8000
or CSA8000 instrument (see Figure 4–25).
CSA8000/TDS8000
80C0X Optical
Sampling Module
Figure 4–25: Dark Level and Vertical Equivalent Optical Noise test hookup
Setup
Summary of Contents for CSA8000 Series
Page 4: ......
Page 18: ...Service Safety Summary xiv CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 22: ...Preface xviii CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 23: ......
Page 59: ...80C00 Modules Specifications 1 36 CSA8000 TDS8000 Instruments and Sampling Modules back ...
Page 63: ...80A01 Module Specifications 1 40 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Page 74: ...Installation 2 10 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Page 103: ...Theory of Operation 3 10 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Page 106: ...Performance Verification Procedures 4 2 CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 122: ...Brief Procedures 4 18 CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 126: ...Performance Tests 4 22 CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 218: ...80A01 Trigger Preamplifier Module 4 114 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Page 231: ...Maintenance 6 6 CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 291: ...Removal and Installation Procedures 6 66 CSA8000 TDS8000 Instruments and Sampling Modules ...
Page 307: ...Repackaging Instructions 6 82 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Page 315: ...Electrical Parts List 8 2 CSA8000 TDS8000 Instruments and Sampling Modules ...
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