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Gary, About 6-7 years ago I found these application notes, or most of them, online. Some are definitive tutorials and give procedures directly applicable to the J16 and its many probes. Pg 7 of the

From easy to difficult: Almost all timebase calibration can be done with a 10 MHz function or signal generator and frequency counter. The fastest sweeps with magnification require a 100 MHz or faster

The back of the board connects to the vertical CRT deflection pins. The little collet sockets pull straight off of the pins but you still have to be very carefu

Two timebases can indeed generate a raster in these mainframes. A raster is also useful for verifying the condition of the CRT phosphor. A 7B53A can also be used as a calibrated vertical amplifier in

Great, thanks!! Now after replacing 80% of the resistors, I can finally put this thing back together!! -Brian

Manual error to be sure ...in my manual the parts list say 100 and the schematic says 1K ( base of Q366) ..my money is on 1K being correct. At 100 ohms I am guessing would pull the base voltage to low

It is a typo in the parts list. On the schematic it is 1k. The part number is for a 1k (315-0102-00 is a 1k). Regards.

I'm replacing out-of-tolerance resistors in my 2901 time mark gen and ran across a 1k resistor where the SM says it should be 100R. The resistor in question is R364 on the divider board directly

Hello, May or may not be a fit for your application or budget, but I saw this on page 69 of the March 2018 RSGB magazine: Micsig DP10013 100 MHz high voltage differential probe, about GBP150 Also

Hi, Those of you who were following my "7603 working ... then blank" Thread will know that the problem was a shorted C492 Tanatalum cap on the Vertical Amp board. To replace this cap, I could simply

If the SG is leveled, then it can check frequency response. There are several 7000 series plugins (not 7xxx) that can do this, with differing frequency responses. That ought to allow you to use an

Hi guys, It would be better if you expressed interest via private email rather than on the list. I subscribe in digest form so direct emails make it easier for me to keep track of who expresses

A5 ROM has nothing to do with calibration -- that is stored in NVRAM -- but it adds those higher sweep rates that 2445B doesn't have i.e. it changes the scope identity. It is no biggie -- you simply

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* TG501 schematics.pdf *Uploaded By:* Robert Hay

On Sat, 3 Mar 2018, Steve Goldstein wrote: I would take one SD-24 set and SD-14 Service Reference if they are still available. > Here are some manuals I saved from the heap over the years. I don't

Thanks for the answer.? That is what I expected but needed and expert opinion.? I don't mind the problem with the A5 ROM because it will probably need replacement anyway for battery problems.?

Here are some manuals I saved from the heap over the years. I don't need them, do you? Strongly prefer local pickup (I'm a bit north of Boston, MA) but will ship by Media Mail within the US.

OT: Although not all that one might want for calibrating scopes, a good start would be a reasonably good Rf signal generator, not necessarily PG or SG modules ... Some sellers on eBay appear to

It will give you a full featured 2465B, not a poor man's one. All parts other than A1 board and front panel label are exactly the same for 2445B and 2465B. Ah, the A5 ROM is different too. --- *

That (and price) is why I guess I don't have either. Oh well. Do have the PG506 and TG601, as well as an SG502 and 503. The 504 has eluded me. Harvey