Dennis, What do the dial scales values indicate?? GerryR KK4GER

Albert, That's great, but where do you use such an instrument. I'm trying to figure out where three risetimes, or two as the case may be, react to give me a single total risetime. It's a neat calculat

Is there a booklet that describes the workings and use of this "calculator" anywhere? Tek was always excellent with their documentation. GerryR

It must have been "Recommended Standard," because I had (have somewhere?) a book that had 132 or so versions of the RS-232 "standard" interface. That's a lot of versions of a so-called standard! Gerry

Is there a Tek part number associated with this unit? How is it used to calculate rise time? Thanks, GerryR

Hello Joseph, Did you remove the internal battery before / after adding the external battery? The Test 04 fail probably means your calibration data is corrupt, and once you have replaced the NVRAM, yo

Jeff, The Test 05 Fail 44, according to my manual, indicates that the "negative level too negative" and "positive level too positive." The test indicates a "Main Board Failure Detected by Auto Level T

The high-amplitude output is used to stimulate the Tek tunnel diode pulser for Vertical Transient Response calibration. The unit I made to replace the Tek Pulser operates at 10 V, so I didn't need the

Jose, You need a good frequency generator to replace the PG506 calibration generator and a good pulse generator (variable duty cycle and fast rise time) to replace the TG501 Marker generator. The puls

Jose, I have the 2465A and have been through the calibration procedure a few times due to the fact that I messed up when trying to change the battery backup module, which I believe you do not have on

One of the calibration procedures produces those series of dots when setting the vertical limits, if I remember correctly. It would appear that whatever initiates that procedure is somehow "stuck on."

I had a similar, but not the same, problem when calibrating my 2465A and traced it to a channel 2 relay in the input module. The problem ended up being a burr on one of the relays the was digging into

I have the 2465A manuals, op and service, and can not find any of what Mr. Panos sited in his inquiry, as well. But the manual I have is accurate as applied to my 2465A 'scope. GerryR KK4GER

When I had my 2465A apart to replace the battery and for calibration, I used an infrared temp probe to monitor the U800. The max temperature it reached after a couple hours on-time was 135 deg F. Once

If you look on page 7, remove part 3, the retractable hook, and then you have to unscrew part #4 to then slip the ground ring off. GerryR KK4GER

I'm pretty sure that the slots can be done, too, but from the drawing, it looks like the part is a perfect candidate for a Swiss Screw Machine. If I was to make this part, I actually would try making

I can't see any attachment. If you have the drawing, can you email to totalautomation1 at gee mail dot com. Thank you. GerryR KK4GER

You only have two choices, 0.5 V per division and 0.1 V per division by the two small button / switches beside the position controls. Of course, with a 10X probe, you can multiply that. Besides good t

You probably don't want to take the chance, but if you can't find anyone local to make the copy, you are welcome to send it to me and I would be happy to copy it for you. Also, I haven't checked for c

Dennis, Thank you again, but just for the record, I was not referring to Leo's design. When I went to his website, I realized that his design was much different than the tunnel diode pulser. It was ac