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Attilio: For high Z input on 50 Ohm analyzers and scope, my solution is much safer and simpler than the P6201! Use a Zo Probe, instead of active probe , then no power connectors and less chances to

Dave, I have some extenders for these, just have to find where I put them. will advise once I track them down. I have several 561/564B units, I do love them, they were one of my first Tek scopes. all

Hi Barry, For minimizing that wavy readout forget about the signal standardizer. Display your signal (calibrator or whatever) at full height (8 div) and the time base for the most nervous readout.

Thanks Jean-Paul, I also use the 492P on 50 ohm impedances or connected to my tracking generator TR503 (with the DC503A counter inserted in a TM502). I wanted to do some tests on higher impedances

Thanks Harvey, I will use the P6201 probe connected to the output with a DC-Block and from this to the RF input of the 492P via a short 50 ohm coaxial cable. -- Cheers Attilio

This might give you some hints: http://www.hakanh.com/dl/docs/kitinstructions/040-0999-02.pdf It is the GPIB mod kit instruction. /H?kan

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.