Products > Test Equipment
Tektronix 576 Curve Tracer Adapters
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NF6X:
I just bought a Tektronix 576 curve tracer on eBay, and I'm picking it up tomorrow. I'm gambling that it will be repairable; the listing shows it producing a trace on the CRT, so it's not entirely dead at least. Purchase price was negotiated down to $600, and it's within pick-up distance from me. The readouts are dark in the photos, but the readout intensity knob appears to be turned all the way down. Nothing appears obviously missing in the photos, though the offset mult counter knob looks a bit out of whack. Please wish me luck with it! As long as it doesn't have any fatal flaws like a burned out transformer, I think I'll be satisfied with it.

I'm browsing eBay for a basic set of test adapters for it, and there's one thing that is confusing me: Are there any electrical differences between the various dual-width transistor and FET adapters such as A1007, A1009, 013-0098-02, and 013-0099-02? Or do they simply have different markings on the top? Can I just get one of any of them and then add some tape markings if it isn't marked for both FETs and BJTs?

The machine includes the standard test fixture, but is missing the 337-1194-02 safety cover. I wonder if I might find a nice way to fabricate a replacement? I'd rather use the safety cover than bypass the interlock.
perdrix:
The Annnn adapters were designed for the 370 series curve tracers - they do work with the 576 though.

You need to read the datasheets - the 013-0098-nn and 013-0099-nn are wired differently.

You can find those datasheets at the Tektronix wiki - e.g. https://w140.com/tekwiki/wiki/013-0099-00

HtH
David

NF6X:
Thank you! The 013-0098-nn seem a lot less common than the 013-0099-nn.
Stray Electron:
  Adapters for the Tek curve tracers are like GOLD on E-bay! 

   Give us an update on your CT after you check it out!
NF6X:
Yeah, I've noticed! I may have spent as much on adapters as on the instrument itself, even with offers below asking price. I'm just putting my hand over my eyes and not adding the numbers together. So far I've ordered one axial diode adapter, one TO-220 and friends adapter, one TO-66, one combination TO-3/TO-66, and I think I have an offer on a TO-3. It's been a blur.

Uh, regarding the adapter datasheets for the 013-0098-nn and 013-0099-nn: I see that they have different PCB part numbers inside, but I don't see details of the wiring differences. I'll need to keep digging through the manual scans to see what I can learn. I see a number of the 99 adapters listed now, and I'm waiting to see if an offer gets accepted before I grab one. I don't think I see any 98 adapters at the moment.

Are the 202 series scope carts about the right size for the 576? That's what I infer from looking at tray dimensions on the Tek Wiki.

Edit: Aaaaaand my offer on a NOS "99" FETs adapter was accepted. I really don't want to add up all of the individual purchases. I guess I still need to find a "98" FET/BJT adapter.
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