Thanks!

In an older manual it is as you say #70 however this part and #71 were both replaced with 384-1305-00 which is the coupler and shaft in one piece. In a newer manual only the newer part is shown and

In the mechanical of the 177 service manual I have it is part # 70 it is under the extension shaft it sits between the switch and the shaft that goes to the current per div knob. Apparently collector

As far as I am aware yes they are however there are some build differences and the knob is different as well as the lighting. Early examples have 2 lights later ones have a single light and a printed

A simple question, can any 177 test fixture fit into any 577 curve tracer regardless of its build date / serial number? Thanks

Eric, I went to my 177 (JAN/1983) Fixture Mechanical parts manual and I do not see a part listed by that number. Is that extension a part of the switch? Are you sure about that Part #? I see

I'm only considering one single part at the moment. Injection molds are extremely expensive, and I'm a mere postdoc. I only have one lecroy scope and it's relatively modern, and this project is mostly

... and not just TTL, I should have said. Things like EPROMs also have a +/- 5% voltage spec. Raymond.

Just a thought Rod... I don't know where you are located but if someone in your area has a 271x you could borrow the A10 microprocessor board from, you could try subbing it to see if that corrects or

Don't think the original knob is made from bakelite. Bakelite is a "thermosetting" material and it would not be likely that it would ever crack like plastic.  It is definitely a type of plastic

Finally someone (Dan) took the time to opine based on the "literature." Everyone ought to... as they say.. slam that like icon.

Resistance is a parameter, in a model of order n... and how that resistance is instantiated into the World, and what the World has to "say" about it... matters... a lot. "fixed" carbon composition

Does anyone have or know how to duplication a 376-0144-00 This is a mechanical shaft coupler used in the 177 fixture. It needs to be insulated up to 1600 Vdc from the collector supply. This is one of

Each of us has our own situation, and our own level of comfort with the financial organizations we deal with. I get that you love paypal, and think they are all unicorns and rainbows. I don't, and I

I am not saying it was Dennis's fault nor that we should change anything that is currently going on I am suggesting generating NEW low dollar transactions to get the reputation us so that this is no

It's not Dennis' fault. Plenty of people have paid with F&F with no issues. PayPal will stop your ability to pay F&F if 1) you've abused it and/or 2) you've had bounced transactions (bought

If there is an underlying issue with Dennis's pay pal reputation as this seems to be an ongoing issue and it is just a few button clicks to make badly written software happy If there is enough

Don't get me wrong, I'd love to get good reproductions. The tact-switch caps are better than bare levers, but I only put them on because cracked falling-off bats MAKE ME CRAZY. Dave

Thanks very much for finding that source, Dan -- our emails crossed in transit. I see that the manufacturer recommended quite a longer bake time than I had used. Very interesting to know. Also,

I don't know this instrument. If any TTL logic is fed by this "VDD" (usually a MOS supply voltage), it'd be on the low side (Vccmin=4.75V). Probably even lower further downstream. Raymond