Tektronix SD-42, Руководство пользователя

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Performance Check
3–2
SD-42 & SD-46 User Manual
Using This Procedure
This procedure allows you to perform a basic optical inspection on the
SD-42/SD-46 Optical-to-Electrical Converter Head with a minimum number of
steps.
In these procedures, the following conventions are used:
H
CAPITAL letters within the text identify front-panel controls, indicators, and
connectors (for example, SELECT RANGE) on the plug-in heads and
oscilloscope.
H
Bold letters identify menu labels and display messages.
H
Initial Capital letters identify connectors, controls, and indicators (for
example, On) on associated test equipment.
In some steps, the first word is italicized to identify a step that contains a
performance verification and/or an adjustment instruction. For example, if Check
is the first word in the title of a step, an electrical specification is checked. If
Adjust appears in the title, the step involves an electrical adjustment.
At the beginning of most steps, the user is instructed to initialize the oscillo-
scope. The Initialize feature, located in the UTILITY major menu, presets all
oscilloscope controls and functions, excluding the calibration constants, to
default values. Initializing at the beginning of each part eliminates the possibility
of settings from the previous parts causing erroneous or confusing results.
Details on measurement techniques and instructions for making menu selections
are generally not included in this procedure. Comprehensive descriptions of
menus and oscilloscope features are located in the oscilloscope User manual.
Specific information on the SD Series Sampling Heads (SD-22/SD-24/SD-26)
are located in the sampling head Installation/User manual.
The limits and tolerances given in these procedures are for the Optical-to-Electri-
cal Converter Head under test only. Test equipment error is not included except
as noted.
Before proceeding with the following checks, allow sufficient warm-up time for
test equipment to stabilize (typically 20 minutes). The ambient temperature must
be between 20
_
C and 30
_
C.
Conventions
Initialized and Stored
Settings
Menu Selections and
Measurement Techniques
Limits and Tolerances
Preparation