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Tektronix Scope Replacement Part Needed
I attempted to straighten the shafts of a dual pot and managed to snap the outer shaft (for the front pot) right where it enteres the bushing rendering it unrepairable. DUMB DUMB DUMB The pot is Tektronix PN 311-1393-00 AKA Clarostat PN CM39702 It's the INTENSITY/FOCUS control on a Tektronix USM-281C. There are two pots: 5K in the front (with a snapped outer shaft) and 5M in the back. The 5M is separated by an inch or so from the front by a dielectric tube for it's elevated some 6 kV. I realigned the scope and it's extremely stable and accurate and I had planned to use it on the bench. Fortunately I snapped the shaft with intesity set just about right. However, for some "very snappy" measurements, a little more brightness on the screen sure would help! I have chased down all the Google sources for both PNs and no joy. One outfit in Canada had the pot on its website but it had been sold before I could get there! Drat! Any help would be most appreciated. Anyone out there with a dead USM-281C willing to strip out the pot? I will pass your palm with silver! TIA-- Terry--WB4FXD Edenton, NC |
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#2
Posted to alt.electronics,alt.ham-radio
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Tektronix Scope Replacement Part Needed
Terry wrote:
I attempted to straighten the shafts of a dual pot and managed to snap the outer shaft (for the front pot) right where it enteres the bushing rendering it unrepairable. DUMB DUMB DUMB The pot is Tektronix PN 311-1393-00 AKA Clarostat PN CM39702 It's the INTENSITY/FOCUS control on a Tektronix USM-281C. There are two pots: 5K in the front (with a snapped outer shaft) and 5M in the back. The 5M is separated by an inch or so from the front by a dielectric tube for it's elevated some 6 kV. I realigned the scope and it's extremely stable and accurate and I had planned to use it on the bench. Fortunately I snapped the shaft with intesity set just about right. However, for some "very snappy" measurements, a little more brightness on the screen sure would help! I have chased down all the Google sources for both PNs and no joy. One outfit in Canada had the pot on its website but it had been sold before I could get there! Drat! Any help would be most appreciated. Anyone out there with a dead USM-281C willing to strip out the pot? I will pass your palm with silver! TIA-- Terry--WB4FXD Edenton, NC I don't know if they have your part or possibly it is the place you already looked but these people have a lot stuff. http://www.sphere.bc.ca/ -- Leon A computer without Microsoft is like a chocolate cake without mustard. running Linux http://www.okv.ca/ |
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