The only Iwatsu's that I am familiar with are the models SS-7840H(470MHz) and the SS-7840(400Mhz). Seem to be really great scopes when you get their power supplies repaired. Terry

wanna say 5711 with dmm and counter Jerry KJ6NTL

Which model?

also since you elected to input the signal through channel 2, make sure you select the trigger input ("A&B Source") as channel 2.

With the "mode" selector in the "ALT" position, did you turn the "B delay" and "B trigger level" until you could see a highlighted portion of the waveform? If you don't see a highlighted segment,

Sorry typo I'm looking for 519 scopes and parts.

A while ago I bought a Xerox WorkCentre M20i printer/copier at an equipment auction for a company that went under. It looked like it should have been working, as it even had faxes still sitting on it

Thanks, Don, that's what I had in mind and I have already been looking for a suitable R until I just realized that there are several on this very same thick film device... Should be an easy thing if

You can measure the 24.5 M resistor by putting a lower value resistor in parallel and then measuring. If it's completely open you'll just get the value of the parallel resistor but if it's OK

David, I had already replaced Q1201 after operating without it reduced cathode voltage a lot. No difference. Also checked CR1244 and its (cathode) connection to +50V. Looks OK. That's why I'd like to

Both the high voltage multiplier and the cathode supply work off of the peak voltage from T1225 but since the regulator only uses the rectified and filtered cathode supply for feedback, it does not

x10 vertical magnification (500uV/div = 5mV/div x 10) is turned on by pulling the vertical CAL control straight out. Bandwidth is lowered from 50 MHz to 5 Mhz when x10 vertical magnification is on so

Hello group. I am building half-bridge inverter and trying to check waveforms wit my Tek. It looks perfectly fine while checking signal on gates of the FETs please see album "Tek waveforms" -

Yes 500uV/div is nice. I wish my 200Mhz LeCroy had this. I didn't realize this scope had this setting though. Ill have to look at it when I get home. I will check this out and see how much the service

You know I am going to hit myself if it was because I didnt set the B sec/div. I really thought I tested this because I do understand what B mode is for. So I will respond again soon with what I

This general family of dual trace 100Mhz scopes were always the workhorses of Tek's portable line up, and are really good performers if they have been well cared for. by 2013, all 465B's will be

Do you mean 491, 519, or ????

thanks i will look again/ what are the normal probe impedances? 1meg i havent messed with electronics in twenty +yrs but its beginning to come back Jerry KJ6NTL

The 2230 is the same way with the top board. You have to pull the front panel push button switches apart before you can tilt it out of the way. The "main" board is the large one along the bottom of

I thought it had to be something like that, Albert.. Raymond