HP 8340A Service Manual page 20

Five of the Cal Constants, PRESET OPTION (#56), HPIB ADDRESS (#57), RETRACE
DWELL (#58), A TTEN CONFIG (#59), and CONFIGURATION (#60) use their bit configura­
tion to store more than one piece of information for the HP 8340A. For example, the HPIB
ADDRESS sets up the HP 8340A's HP-IB address and allows or disallows the
[LOCAL], [SHIFT] [SAVE],
IB address of 19, disallow the
function, the user would enter 179 for Cal Constant #57. The 179 was arrived at by
[SAVE]
adding 19 (HP-IB address), 32 (disallows
128 (disallows
[SHIFT] [RECALL]).
A hard copy of the HP 8340A's Protected Data is included in a plastic envelope with each
instrument. It is stored in a bracket which is located underneath the top cover, on the side of the
instrument. If the Working and Protected Data are ever lost, the information on this sheet
should be used to restore the Cal Constants. Also, when the HP 8340A is recalibrated, the hard
copy of the Protected Data should be updated and placed back into the instrument (remember to
update the Protected Data). A sample of the hard copy that is included with the instrument is
shown in Figure 8A-4.
Model 8340A - Service
and
[SHIFT] [RECALL]
and
[SH I FT] [LOCAL] [RECALL]
[SHIFT] [ LOCAL]),
The other four Cal Constants work in the same manner.
Scans by HB9HCA and HB9FSX
functions. If a user wished to set up an HP­
functions, and allow the
0 (allows
[SHIFT] [SAVE]),
[SHIFT]
[SH I FT]
and
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