Products > Test Equipment

Photos of your interesting and historical test equipment stickers

<< < (4/10) > >>

chuckb:
The Dana Corporation had a team that built the first Direct Digital Synthesizer in the 70's. This was written about in the first Jim Williams book. I have two of these that look like they were used by the JPL Deep Space Network. I have seen articles where these were the key pieces used to track the Voyager probes out past Pluto. The doppler frequency shift communicated relative speed of the probe and the cumulative phase shift measured distance. A nice piece of space history.
Note the Digiphase spelling difference between the front label and the back name tag.

AF6LJ:
You guys have some really Cool Stuff.
I'll have to look for some more around here.

joeqsmith:

--- Quote from: chuckb on October 16, 2015, 02:20:19 am ---The Dana Corporation had a team that built the first Direct Digital Synthesizer in the 70's. This was written about in the first Jim Williams book. I have two of these that look like they were used by the JPL Deep Space Network. I have seen articles where these were the key pieces used to track the Voyager probes out past Pluto. The doppler frequency shift communicated relative speed of the probe and the cumulative phase shift measured distance. A nice piece of space history.
Note the Digiphase spelling difference between the front label and the back name tag.

--- End quote ---

 :-+   Ever try to run it?

rsjsouza:
I have a Power Designs 5015A from General Dynamics Astronautic Division (GIIIIIIIID) that was last calibrated in 1969. The front aluminum faceplate and the cal sticker are still there and in excellent shape. The cal sticker is a pretty nifty nylon mesh.

Cubdriver:
Here are pics of the Bendix HP 3440A I mentioned in the thread that spawned this one.  I purchased this and its sibling this past August from Apex Electronics in the Los Angeles, California area.  They were sitting in the outside fenced in area, 'protected' by virtue of resting inside a desktop rack unit.  (As a New Englander used to frequent rain, snow and ice, seeing all this electronic stuff outside and exposed to the elements seems like insanity, but then again, I suppose just north of LA the elements are mostly sun, heat and more sun.  Oh, and dust, too.  Lots of dust.)  For all their exposure, they're in remarkably good shape and pretty clean inside, though I've no idea how long they may have been there.  There was plenty of dust on them, so my guess is that it was for a while.

The embossed metal tags were doubtless added quite some time after they had been purchased, since a 3490 digital meter (introduced by HP in 1973) that I bought on the same trip has a similar sticker with a lower number than the ones on the 3440As.  The thing I found to be pretty cool was the asset tag on the back of the meter that showed it had been purchased 50 years to the month earlier than when I got it.  It's in the queue for restoration, and the electrolytics inside are no doubt dry as a bone.  Based on the serial number, the meter appears to have been manufactured in late 1964.







-Pat

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod