Products > Test Equipment
HP 1741A oscilloscope - restoration project
BravoV:
Love this thread, thanks for sharing this tekfan.
This is making me to re-think about an offer locally for this exact beauty about US$150 complete with front cover, really itching to grab it. ::)
tekfan:
I hope I can upload more pictures about the progress soon. I also got a HP 1740A from school (non workong of course - same as this one only non storage).
appsman:
Wow! I have to admit, when I saw the start of this post I thought, "No chance", but you are clearly not to be denied! Very impressive work. I think even Jim Williams would have been impressed.
dfnr2:
Great thread, and beautiful pictures of a beautiful scope. We are all waiting for the pics of the restored scope.
The HP 1700 series are really marvelous scopes, I bought a nice "untested" 1725A on Ebay about 10 years ago and repaired it, and it's been a reliable workhorse ever since. These scopes are a pleasure to have at the bench. They also have great manuals and are a joy to work on and repair (unless a hybrid dies, but they don't seem to be as failure prone as the Tek 24xx hybrids.)
Dave
tekfan:
Onward:
After replacing the CRT and turning it on:
Lo and behold a trace!
The trace was very unfocused at first:
After some fiddling around with the HV supply:
The trace after calibrating the HV supply, astigmatism, focus... MUCH better
After some calibration:
The trace is the pulse from the Jim Williams pulse generator
The rise time is slightly over 2ns as opposed to the specified 3.5ns
This scope can easily display signals well beyond 100MHz
The trigger source can also be displayed on the screen. Giving the scope an ''almost'' third channel.
All that's left now is to put the covers back on
And since it's a storage scope you can even play Etch A Sketch on it:
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