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I have a 2432 opt5 with bad CCD working with a 2430A bad DALLAS analog board. -----Mensaje original----- De: [email protected] [mailto:[email protected]] En nombre de cmjones01 Enviado el: jueves,

Bonjour cher Attillo a few mort notes please 1/ wideband devices like 492 SA seldom need a high impedance probe as the sources are usually 50 or 75 Ohm. Even with a FET probe, the shunt capacité and

I think that's where the "lower performance" comes in. I think what you have to make the assumption of, is that the subject "standard" plugin is somehow correct and in calibration. Using this as a

I see where Table 4-1, Item 3 (Signal Standardizer Calibration Fixture) states that "Calibrated 7000-series plug-in units with suitable signal sources may be substituted if lower performance is

It is indeed interesting to slow the sweep speed down to about 0.5s or more and watch the readout written after the sweep completes. I had not seen that before today. Thanks, Barry - N4BUQ

1) AKA Chop mode, 2) AKA Alt mode.? ?Both useful but at different sweep speeds.? ? ? Jim FordSent from my T-Mobile 4G LTE Device

Those would be right.? The 492 should have a 50 ohm termination, so termination selection is ok.? DC OFFSET can be a problem, since it's easy to accidentally switch that to the wrong position.? I'd

I remember now that this involves adjustment of the LF Compensation. The calibration steps for that calls for a standardizer fixture and I don't have one of those. Is there a way to make that

Oops, I meant a 3S76, in case anyone thought I’d found an unusually rare (to the point of nonexistence) plugin. :-)

I’m fixing up my 564 and its plugins. The mainframe is now working, but I have multiple issues with a 3A6, a 3T76, and a 3T77. The lack of a plugin extender is making things awkward. I know the Tek

I recently acquired a parts donor for my working 468. The donor unit had a GPIB card which I tried to transplant into the working one. Having checked the documentation, I found that a DIP switch

Thanks Harvey You can confirm the following settings on the active probe: termination on EXT, the DC OFFSET on OFF and the INPUT COUPLING on AC ? Thanks, cheers Attilio

My 2430A is one of those. The batteries in the Dallas modules gave up a few years ago so I first lost trace storage and then the calibration data. I replaced both RAMs with Cypress FRAMs

Start by comparing the one you got to the one in the auction photo.

Which scope is this?

Since the P6201 has a variable offset in the box, it does (and will) put out a DC voltage.? DC block highly recommended.? I'd put it closest to the probe box, then run a short length of cable to the

---- Great news and congratulations for the repair. Internal to U50 pin 6 is the comparator reference that decides when the ramp reaches its peak. Ozan

Thank you Jean-Paul and JOE. Can you tell me how to set the active probe P6201? In any case I think it is essential to use a DC-block because the 492 does not accept any DC voltage at RF input.. Happy

Hi Barry, please reread message 187015. Albert

Yes - I was thinking it was digital noise coming from the readout character generation circuits. I tried the switch in the GATED position and that does indeed eliminate [almost] all of the gaps in the