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Hi Dave, You can unlock the options via GPIB. They are locked in EEPROM. See https://www.eevblog.com/forum/testgear/enabling-options-in-tektronix-tds500-tds600-and-tds700-series-scopes/ for example.

You might try asking in the Test Equipment section of the eevblog forums <https://www.eevblog.com/forum/index.php>

Go to the photos section </g/TekScopes/photos> and create a folder called (e.g.) TU-50, and upload your pix there. David

Hey everyone, I was pointed in the direction of this group from the Tektronix subreddit. Like the title says I don't have a formal background in EE or repairs, just some modest restorations of tape

Hi Teksperts, Is it possible to identify which options are locked within a Tektronix TDS640A from the serial number? I understand that many options are present but 'locked' from access on lower spec

Thank you all that responded, I have now contacted VintageTek Museum to inquire. QService where not listing these particular parts Thanks and kind regards, Daniel

The Novasensor product line is still around. Jim Williams's AN61 (https://www.analog.com/media/en/technical-documentation/application-notes/an61fa.pdf) includes several application circuits that might

While looking for some manuals I found the bitsavers.computerhistory.org site. It has some very high quality manuals including TEK ones. Regards, Brian

Thanks. The ebay listing is for the pressure transducer part of the probe set I have. Definitely labeled as Tektronix gear. The probe assembly has a Lemo power cable and a P6137 style BNC connector

Hi David, and thanks for the suggestion. That could well be the case. It seems that I need to figure out which part of the PSU board supplies the horizontal control circuit? Whatever is

Thank you, Jared, for the gesture. I really appreciate it. 73!

A glow off to the right might suggest that the left horizontal plate signal was disconnected ...

Further testing.. Swapping the known good PSU and top boards into the original 2430A reveals that the display problem is indeed created by the original PSU. The original scope starts up and has

Shall keep this short, however... swapping the PSU from the 'original' (no display) scope into the working 2430A, brings back the 'BEEP' and the glow off of the right hand side of the CRT (no

Ok - thank you. I'll try it as soon as I got my 3034C

These schematics are for the TDS540, but the power pins will be the same: https://w140.com/tekwiki/images/c/c9/TDS540_Schematics.pdf Jared

Thanks for the reply... After having spent some time going through the CPU/CTM schematics I am inclined to agree with you, it's more probably a mechanical connection problem somewhere. The un-read

See https://www.ebay.com/itm/234280743238 It has an alternative part number (Not my auction just a Google result) Sent via mobile annoyance thingy, please pardon any typos. [email protected]>

If your probes don't seem to be Tek or related to engine analyzers, then also look at HP's foray into laser interferometer systems, which had some transducers for barometric pressure, temperature, and

Here's the rest. https://w140.com/tekwiki/wiki/Engine_Analyzer_System Ed