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I'd rather think that advising a newbie to buy an uncalibrated, unknown 7603 is sending him/her on a wild goose chase. A newbie will not have enough experience to easily ascertain whether something is

Given that IIRC the OP doesn't have a spectrum analyzer, you'll want to get step or pulse responses of the audio gear you're testing. I can hardly see that going all too well with an uncalibrated

Well, if all you care about is *basically working*, then I agree. But then you don't need a 7603 either. A random 7603 with random plugins will *basically* work, but most of the time it doesn't really

Anything that has got banana jacks on it *may* perform poorly for anything above a few kilohertz due to parasitics, unless you put the feedback path next to the chip. It does have a place to solder

Hello Chris, On A41 there is a chain from GND to +50V: R177 (35k7) - R176 (2k trim, Shield Voltage) - R175 (12k7). The slide of R176 is decoupled by C175 (0.01uF) to ground. Location R176 is what you

Chris Johnson wrote: If you go with an external graticule, the marking will be at least 1/4 inch away from the phosphor. That leads to a rather nasty parallax problem. Internal, or electronically

A lot of Tek CRTs are different only in how the graticule is marked. For example, if it weren't for the fact that the graticules are different, I could swap the pristine, very low hours CRT from my

I'd agree with this. I used to have a 465M and it was a pretty good scope. You can get them dirt cheap on Ebay. For the original poster, if you're comfortable designing, building, and debugging audio

Oh no... it just so happens my wife and I are traveling to Vancouver next week, but I'm sure she would not be interested in taking a day from our vacation to drive to Kelowna to pick up old

Hello: I need to verify the wiring to the fan on the Tek 453 which I just acquired as first scope. Works fine, but fan bearings were dry. Got it going but cannot verify with certainty the solder

I tried that today and it works quite well once you know what to do. Connect vertical output to line level input of a regular stereo receiver or amplifier, plug in the headphones. Digital storage OFF.

Aaaah.... empirical design. This always works.

Maybe if it was a "instead" question it would be an error, but luckily it is only "what first", standard PIs are cheap. I would expect the MF will come with some useful plugins (or it may not if it is

Greetings etc I have a late model 7704A & an earlier manual. BAMA is no help. Z axis board is suffix 01, my manual is for suffix 00. Suffix 01 board shows an additional trim pot immediately below

Hi Walter The 11K vertical plug ins are not simple. Most will give you 1% or much better accuracy. The plug in data and cal info is read by the mainframe on power up so you need intelligent plug in's

i have 2 t932a tek scopes that are excess to me they came from the university of california both are repaired now, the tubes are in perfect condition and i have a pdf of the service manual. where are

Hello Michael, Also measure the unregulated voltages at the filter caps. (Values on the schematics are only crude indications). Low values might indicate bridge faults or open filter caps or a very

I happen to agree with you, with the proviso that a 7A22 is darned useful for audio. My reading was the guy was looking for a first scope for audio. I think it would be an error to get a 7A22 instead

I do repair the audio stuff. My recommendations are reasonable and explained. I don't know the high falutin stuff like yall others, but this other stuff is my fortay. For going out buying DVD players

I happen to agree with you, with the proviso that a 7A22 is darned useful for audio. But lighten up a little is all I'm saying! Craig