Products > Test Equipment
HP / Agilent 34401A hidden menu
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ian.ameline:
In fact it's likely that the number at that address is an 8 bit control "register" other bits in it may control other capabilities... Just peeking around in that byte only may yield some answers without endangering other data stored
ian.ameline:
Hmmmmm -- DIAG:PEEK? seems to work strangely on the 34401A - it wants 3 numeric parameters -- DIAG:PEEK? 25, 0, 0 results in the same output as *IDN? -- weird, right?

Other values produce what look to be 32 bit numbers. DOcs for other HP devices say that there are 2 paramters to PEEK? and they are address and bit_width -- the latter which must be 8 or 16. The 34401A does not seem to work like that at all.

Has anyone else tried DIAG:PEEK on a 34401A? Anyone? Buehler?

ian.ameline:
A little googling found this; http://instructor.physics.lsa.umich.edu/adv-labs/Tools_Resources/HP%2034401A%20quick%20start%20guide.pdf

Node that the "hidden" menu items are documented here -- including the G: TEMP MENU!


dimmog:
yep. we already discussed this on the first page.


--- Quote from: ian.ameline on February 19, 2021, 03:14:43 am ---A little googling found this; http://instructor.physics.lsa.umich.edu/adv-labs/Tools_Resources/HP%2034401A%20quick%20start%20guide.pdf

Node that the "hidden" menu items are documented here -- including the G: TEMP MENU!

--- End quote ---
syzygy:
excuse my ignorance - is there a logfile or equivalent that describes the features, or even dates, of the revisions?
my 34401A is Rev 08-05-02 - I don't see that f/w listed anywhere?
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