[time-nuts] HP 5370A to B conversion
cfharris at erols.com
Fri Dec 19 08:55:24 EST 2014
There really is no need to convert it to a B unit, as
the A unit has the same specifications. If you put
John Seamons' BBB CPU card in it, it will simply sing
as far as speed goes, and you can use the A or B
virtual roms as you wish.
The principle difference is the B analog boards are
easier to calibrate, and, have a different range of
threshold settings on the front panel knobs..
Perry Sandeen via time-nuts wrote:
> List, I won a 5370A from ebay. Though it seems to be missing the A channel level
> knob, the unit was shown powered up with the correct 0.0 on the display, although
> the unit was sold as non-working for parts or repair. But the price was right
> with a best offer accepted. So assuming (gulp) that the unit works after fixing
> the A channel problem. is it practical or desirable to convert this to a B unit? I
> have one of the new processor boards with the BBone option that I can use in the
> unit. Advice requested. Regards, Perrier
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