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TDS 520A, 524A, 540A, & 544A Performance Verification
Performance Tests
This subsection contains a collection of procedures for checking that TDS
520A, 524A, 540A, and 544A Digitizing Oscilloscopes perform as warranted.
Since the procedures cover models with both two full-featured channels (TDS
520A and 524A) and four full-featured models (TDS 540A and 544A),
instructions that apply only to one of the model types are clearly identified.
Otherwise, all test instructions apply to both the two and four channel models.
The procedures are arranged in four logical groupings:
Signal Acquisition
System Check
s
,
Time Base System Checks, Triggering System Checks
, and
O
utput Ports Checks
. They check all the characteristics that are designated
as checked in Section 2,
Specifications.
(The characteristics that are checked
appear in boldface type under
Warranted Characteristics
in Section 2.)
These procedures
extend
the confidence level provided by the basic
procedures described on page 1-1. The basic procedures should be
done first, then these procedures performed if desired.
Prerequisites
The tests in this subsection comprise an extensive, valid confirmation of
performance and functionality when the following requirements are met:
The cabinet must be installed on the Digitizing Oscilloscope.
You must have performed and passed the procedures under
Self Tests,
found on page 1-4, and those under
Functional Tests,
found on page 1-6.
A signal-path compensation must have been done within the recom-
mended calibration interval and at a temperature within
C of the
present operating temperature. (If at the time you did the prerequisite
Self
Tests,
the temperature was within the limits just stated,
consider this
prerequisite met.)
The Digitizing Oscilloscope must have been last adjusted at an ambient
temperature between +20 C and +30 C, must have been operating for
a warm-up period of at least 20 minutes, and must be operating at an
ambient temperature between +4 C and +50 C. (The warm-up require-
ment is usually met in the course of meeting the first prerequisite listed
above.)
Related Information — Read
General Instructions
and
Conventions
that
start on page 1-1.
Equipment Required
These procedures use external, traceable signal sources to directly check
warranted characteristics. The required equipment list is shown in Table 1-1.