Model
8901B
Instrument Changes
Section
7
INSTRUMENT
CHANGES
7-1.
INTRODUCTION
TO
THIS SECTION
This section contains instrument modification recommendations and procedures that could improve
the performance and reliability of your instrument. Refer
to
Instruments Covered
by
This
Manual,
paragraph
1-5
in Section
1
for
important information about serial number coverage.
7-2.
FIRMWARE CHANGE SUMMARY
(23144
TO
2644A)
Description
The instrument has undergone several changes in firmware. This article summarizes the changes and
should be helpful
in
deciding whether to update firmware to a more recent edition.
The firmware is changed whenever anomalies are found in the instrument’s operation which can be
corrected by altering the Controller’s program. Firmware
is
also changed
to
add new features which
may be only changes in the program
or
which may
also
result from instrument hardware changes.
Since the program resides in the
ROMs
(the firmware), the
ROMs
are altered each time the program
is
changed.
At
that
time the new
ROMs
are given new part numbers and the software (the program)
date
is
changed. (To display the software
date,
key
in
Special knction
42.0.)
Always update firmware
with the latest edition, which is backward compatible. (See Service Sheet
24
for
ROM
identification.)
Summary of Software Editions
1.
Software date code: 167.1983
(23144
to
2333A)
ROM
part numbers:
ROM 1,08901-80062
ROM
2,
08901-80063
ROM 3,08901-80064
This is a preliminary edition
of
software which should be replaced by the most recent edition.
2.
Software date code: 272.1983
(2334A
to
2426A)
ROM
part numbers:
ROM 1,08901-80066
ROM 2,08901-80067
ROM 3, 08901-80068
This is the first edition of software in production instruments.
3.
Software date code: 115.1984
(2432A
to
2550A)
ROM
part numbers:
ROM 1,08901-80071
ROM
2,
08901-80072
ROM
3,
08901-80073
7-
1
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