HP 8112A, Руководство по эксплуатации, программированию и обслуживанию, Страница: 335 / 406

Backdating
I ntroduction
Note
B
Backdating information is only required for instruments with a serial
number
lower
than that shown on the front page of this manual
i.e. When you have an older instrument than those covered in this
manual.
This appendix contains backdating information to adapt this manual
for instruments with a serial number
lower
than that shown on the
title page. Only the digits following the letter are important when
deciding which changes apply to your instrument. If your instrument
has a higher serial number than that shown on the title page, refer to
Appendix C
Updating
for any possible changes instead.
To adapt this manual for an earlier instrument, look up your serial
number in Table B-1 and implement the changes from the
latest
back
to the earliest change which applies to your instrument. For example,
if the serial number of your instrument is 2633G04470, implement
changes in order from Change 57 to 36. Change 35 and earlier would
have been incorporated during manufacture.
Where changes to components occur, modify the appropriate
schematic and component layout accordingly.
•
Some components may have been changed more than once during
production of the HP 81 12A. Therefore Hewlett-Packard suggests
you make the modifications to the manual in pencil as you work
through the changes for your instrument.
•
Some components may have been changed individually, or as part
of an associated group, to improve performance etc. In these cases
Hewlett-Packard suggests you note the difference between the
build standard of your instrument and current models, but do not
implement what would in effect, be a retrograde change.
Backdating B-1