Gould - 400 - Oscilloscope
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Gould 400
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Equipment:
400
Date:
1989
Category:
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Information
Introduction
This service manual is written primarily for the service
engineer who is performing a standard recalibration or
who is undertaking repairs when the instrument has
developed a fault. The system overview will help the
engineer to understand the inner workings of the 400
Digital storage oscilloscope (DSO).
The fault finding procedure given in this manual takes
a systematic approach. Starting with the symptoms,
the engineer is led to the area or areas at fault by a
series of questions in the form of several flowcharts.
These require no knowledge of the system, although a
basic knowledge of electronics is essential. Throughout
this manual a reasonable level of understanding is
assumed. A list of abbreviations and mnemonics used
is shown in section 9.
Many of the complex operational features of the 400
DSO are performed at chip level. The system includes
one large semi-custom gate array which generates the
ten phase system and related timings and handles the
acquisition of data. On the analogue side there are
three semi-custom analogue I.C.'s, two of which are
channel preamplifiers providing virtually all the
input signal processing, the third is the trigger
signal processing circuit. When fault finding, they
can be treated as 'Black Boxes' so alleviating some
of the more difficult servicing tasks.
Should a problem arise whilst servicing the instrument
expert help and advice is available from Gould (see
section 10 for details).
1 Manual
Service manual
Manual type:
Service manual
Pages:
89
Size:
8.9 MB
Language:
english
Revision:
Manual-ID:
430120
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
March 11, 2013
MD5:
75ad14e7-06e1-f8f9-cd9c-822a6a1f58f3
Downloads:
1698