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Hi, Many thanks to all who responded to my post. My mistake, It is a 7B92A ... I missed the 'A' out. Looks like I have resolved the issue. I think it was just a connectivity problem. With the side

Hi. It might be a calibration issue, between 7L5 and mainframe, or within the 7L5 itself. What does it look like if you turn off the digital storage?? If there is horizontal or vertical discrepancy

Hello out there, I am a little bit used to work with SA and I know, that almost every SA ( if not supressed by the display system ) shows a DC-Peak, which means the system is receiving his own LO.

For sale Tektronix nuvistors, 2x new 157-0121-00, 2x new 157-0127-00 matched pair. One pair is complete, one pair has had one tube used and a new JAN6299. PM me your offer Located in Canada Paypal is

If you actually have a 7B92, not a 7B92A, then that's part of your problem. They were awful. 7B92As are pretty available and reasonable on eBay. But I also agree your mainframe is notbup to a

If I remember correctly, the 7B92 uses a tunnel diode for a trigger generator.? I'd take the trigger signal and trace it through.? I'd look to see if the tunnel diode fails to generate a trigger,

The 7B80’s and 7B92 are a bad match for the 7603 Main frame. This mainframed needs a 7B53A for the best performance. The 7B80’s are 400 Mhz the 7B92 is a 500Mhz time base. The 7603 is a 100Mhz

Hi, I'm new to this group. I have a 7603 Mainframe and the following plug-ins:- 2 x 7A26, 7A11, 7A19, 7A22, 7D13, 7B53A, 7B80, 7B85 and 7B92. Unfortunately, the 7B92 has developed a trigger fault

The front panel should be very similar to the 500 series scopes, so the schematic that's available should get you started. No schematics for the 600 or 700 series was ever released though

Thanks, Jon. Happy New Year

Mike, the very old tube 1A plugins for 1960s 500 series Tek are not a good solution. Never seen 1A plugins power without a 500 scope. Depending on your signal source, and BW, RT, noise, and dynamic

Hi Jon, I was hoping to have a newer version of the old 1A1 preamplifier that has an switchable output for A, B, and A-B. ?I can get an old 1A1 but the power supplies, such as the 127, are very hard

Mike, just checked one of my Tek 2465B, indeed Ch 2 Out is exactly CH2 and is not affected by the invert or CH1 add CH2 buttons. Only the on screen display is affected by invert or add. A difference

Thanks, I wonder if I could extract the A-B output from one of the plug-in difference amplifiers. ?I would like to have the A, B, A-B voltages to send to my wave analyzer. mike

Bonjour, bravo for the good question. Depending on he signal levles, desired CMRR and BW, may options are avaialble for a diff amp, CH1-CH2. But The external VERT output of all 2465/7x TEK are CH 2

I have a 2465A and hoping I can get an output for Ch. 1 - Ch2, much like the old 1A1 preamplifier. If I invert ch.2 and add to ch.1 will the output on the back bnc (ch. 2 output) give me the ch1 -

Just found my 7CT1 plugin curve tracer. Used In a large CRT MF like 7603 its great. Needs a vert PI in the H slot or H PI with X (ext) input. Only 50V but small and handy compared to the giant 576,

Thanks Jon, made me smile :-)

Raymond! Fine to hear from you, The RT and BW on many TEK are conservative (unlike the Chinese scopes) and are often exceeded IF the test setup is optimized. tips for optimized RT : 1/ Use direct

Thanks for the explanation, Jon and yes, it's Raymond from the Netherlands. My remark about the rise time: I see a rise time of 200ps in your photo, which is quite surprising, even for a 7104 with