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Right -- some of the Tek analyzers have a 3 dB pad in front of the mixer, and some have a protective Schottky clamp as well. Neither offers you any real guarantee of protection from mishaps but they

That's a TM-500 series plugin, and is not mentioned in Dennis Tillman's comprehensive list. Dave Casey

Does anyone have any idea what this is used for? From the -99 suffix, I know it was a factory unit as against one that was sold. It looks rather like it would plug into a 5000 series 'scope, or maybe

Hello new to the group.? On my 922 I am having 2 problems.? Cant turn down intensity, measured volts to R412 and it is 7.5 instead of 8.? Low volt power supply is correct on all voltages. R412 is

Hi, When the tracking generator is installed in the 271x analyzers, it is immediately recognized by the CPU. I would take a close look at the interconnections between the power supply board (J4) and

the SA to Only then, cap should

TekScopes@... wrote: John, I recommended the setup AND the procedure, which includes setting the SA to max attenuation BEFORE connecting anything else and powering up. Only then, you can

Had the calibrator to ch1/Left, stable +/-2 div signal centered on the display. All other chanels where of. With best regards Tomas Larsson TL Engineering & Consultants Engelbrektsgatan 121 SE 506 39

I have had this happen before. Setup the scope with a single waveform (i.e calibrator signal), make sure your timebase is beig triggered (near as I can tell, the acquisition doesn't happen until an

Dear group. Started to play around with my newly acquired 7854. Ran into some problems directly. Havent had time to go through it yet, will obviously need to do that. This is what's happening. Analog

Yes, it is a prototype. Specifically a unit numbered 09 of the B phase pre-production build (perhaps 10-20 units), this one assigned to ENGineering. Earlier in the process, A phase instruments were

Preproduction instruments were designated "A-phase" or "B-phase". These have an informal serial number that starts at 01. The B means that this is a B-phase instrument, not that it was made in

Multilayer ceramic capacitors are becoming more and more common these days, up to about 100 uF, as replacements for conventional tantalum electrolytics. However, I'd be reluctant to use 10 uF in a

Those are handy, but the DC isolator refers to a 10?f ceramic capacitor. I suspect that should be a monolithic, film or even a non- polarized electrolytic, but ceramic? – John

I am working on a 2711 that has lost its tracking generator. The inside factory label lists installed options 3-4. and indeed the TG output connector is present. when you press the DEMOD/TG button it

wrote: as "faulty". useful scope Schematics are only a few pages - I can make the scans. Contact me off list. /H?kan

I just bought one of these which was accurately described as "faulty". Which it seems to be! Before I start pulling it apart does anyone have either a manual or circuit diagram they can share with me?

I have a bent inner rod on the Var control/switch. When I rotate the Var, the switch on the board moves, because the long rod is bent, and it won't be long before the solder breaks loose. How can I

So I have a 7613 here that is complete but has obviously seen better days. The scope powers on quietly but after a few seconds, the whole screen gets flooded green. Instensity/storage adjustments make