Products > Test Equipment
Hewlett Packard 740B DC Standard Digital Voltmeter (and 740A)
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Cubdriver:
Oh, snap!  Good find!  I'm watching this closely as mine will need a similar treatment at some point.

-Pat
beanflying:

--- Quote from: Cubdriver on February 28, 2018, 07:00:07 am ---Oh, snap!  Good find!  I'm watching this closely as mine will need a similar treatment at some point.

-Pat

--- End quote ---

Got it out, pre wired the reference wires in place and put it back together again. I need to print out the circuit diagrams and try and figure out a voltage reference point. The simple option will be drop a couple of isolated 12V supplies underneath near the main inputs. Plenty of room but adding more stuff isn't ideal.

When you get a chance could you crack the top on your output box and take some similar snaps to my input one? Based on the snowballs chance in hell of either of us getting the ones we need I now have the Tellurium Posts to make a counterfeit box. I would prefer to make it fairly close to the real deal if possible.
Cubdriver:

--- Quote from: beanflying on February 28, 2018, 07:11:02 am ---When you get a chance could you crack the top on your output box and take some similar snaps to my input one? Based on the snowballs chance in hell of either of us getting the ones we need I now have the Tellurium Posts to make a counterfeit box. I would prefer to make it fairly close to the real deal if possible.

--- End quote ---

Will do.  I need to figure out where I stashed it first, though...

-Pat
factory:

--- Quote from: beanflying on February 28, 2018, 07:11:02 am ---When you get a chance could you crack the top on your output box and take some similar snaps to my input one? Based on the snowballs chance in hell of either of us getting the ones we need I now have the Tellurium Posts to make a counterfeit box. I would prefer to make it fairly close to the real deal if possible.

--- End quote ---

Here are pictures of the Output box & connector (part no. MDR07-7PB-090), note the polarization slot in the connector is in a different place to the Input one.

David
beanflying:
Getting back to this after leaving it on the rack for a while. Ran across some gorgeous Renderings of the 740B and some other HP gear.  More HP renders here  8) https://www.flickr.com/photos/144543740@N05/43372501065/in/photostream/

I think I am making an output box but may casually keep looking for the real deal.

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