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After successfully calibrating my 2465B, it reports "All tests passed" on start up. The question marks are all gone! My issue is with the parametric measurement of frequency. When I attempt to measure

I uploaded the results of my testing the SG503 012-0482-00 cable. In addition I compared it to two other similar cables: a Tektronix 012-0057-00 50Ω cable, and a Pomona Electronics 50Ω cable. It is

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:* Evaluation of the Tektronix 012-0482-00 cable for

Ok. I've removed the battery - have a new one on order. When reassembling I found that J2208 was installed backwards initially. Corrected but no change in behavior. All further testing is done with

Ok, compared the RG-58 Tektronix cable to an RG-400 I built of similar length. At 200Mhz and 4Vpp (x1 amplitude) we have .... The OEM Tektronix cable clocked in at 0.20 dBm low. DIY RG-400 cable was

How can you edit a post on this system? Anyway- Have you replaced the battery yet? Should do that first and reboot the scope several times to get the ram initialized. Pay attention to the adjustments

Ok so some updates: I haven't found any previous posts that address my issues. All voltages on the low side are in spec. Looking back at the ripple measurements in my first post I think they are all

The 577 used one of the Tek custom potted SMPS transformers if my memory is correct. Next to a tube failure, that is your biggest worry. I agree with others. Clean, repair power cord, fuse, power,

I think a good visual inspection followed by the use of an ohm meter would be my first plan. Then repair the cord and install the correct fuse. If you have an ESR meter, check the bulk capacitors and

If you use the correct fuse then the fuse will protect the equipment. If the fuse blows then you need to go into troubleshooting mode. -- Sent from my Android device with K-9 Mail. Please excuse my

I'm still wanting these if anyone can help. Thanks David

All, While I was searching eBay for a transistor adaptor for my 576, I came across a parts 577 in good condition with both the adaptor and an original safety cover for a low price... and ended up

Hello Everyone, Thank all of you who responded to this query and Raymond in particular.? I hope that there are a few other people in the group who benefited from this discussion.? I certainly did.?

I just got bit by this yet again. Does anyone know if it was fixed and what ROM version fixes it? Doing an "autoset" fixes it, but as I have not been able to identify what triggers it, it's hard to

Thank you Siggi for your email and information. I'll work on the scope today, despite needing to assemble few computers for my customers..... I was working way to hard and sometimes I need to

OK, thanks for this information Dennis! I think I wanted to make sure nobody's feelings are hurt.... But I'll stop answering the emails that aren't directly related to me. This setup is very different

Keep an eye out for a plastic flower pot at Home Depot.Cut or enlarge the hole in the bottom. HankC, Boston, WA1HOS

Have a look here for something special, a bit more extreme: <http://www.ggb.com/> Raymond

And a lot lower loss at higher frequencies. Loss can be a little hard to gauge with the usual TDR. The whole point behind the fancy tek cable is that the amplitude accuracy of the SG503 requires the

Hello from Dublin, Ireland. I have a question some of you knowledgeable folks might be able to advise me on. I have two apparently similar scopes, a TDS 320 (100 MHz, 500 M samples/sec) and a TDS 350