| Products > Test Equipment |
| I'm updating a Wiki site for the Tektronix 1240 / 1241, and I need your help |
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| bsb0011:
Sorry folks, due to some nasty flooding, and dealing with a basement full of water, I have not yet had the chance to upload any of my info to the TekWiki page. I know several of you have expressed interest in what I have been collecting. Hopefully I will be able to get my flooded basement issue taken care of, and get that information posted soon. Probably not this weekend however, as there is more rain predicted over the next few days. Thanks for your understanding. |
| Floopy:
Hello, a bit late to the party. I came here because of this https://www.eevblog.com/forum/testgear/tektronix-1240-rom-pack-manual/msg2061346/#msg2061346 Somehow I never noticed anyone replied. I want to thank JFJ for providing the PDF. I finally got it to work after that. Thanks! :-+ ==Going back to this topic== I was actually looking for information on some of the Tektronix ROM packs and I ended up here. I uploaded the instructions on Tekwiki and I attached them to their corresponding page. bsb0011 I hope that you won't hate me too bad for doing it. I just didn't know if you where going to or not. I hope you can type up the information you have sometime soon. There is a lot of information that I haven't uploaded yet. |
| bradg:
Sorry for bumping an old thread, but had some info to add that maybe a few may find useful. The original battery from Catalyst Research is a non-rechargeable 3V Lithium Iodide battery. There were at least two styles of battery installed in 1240/1241 units, one that looks like an oversized coin cell, and another that looks like an oversized crystal can. Speaking from experience, I can say that the oversized crystal can type battery is of extreme risk of leaking and destroying the A09 board (among other things if left too long - experience talking here). The battery in the analyzer (and almost certainly the PAK's too) can be replaced with a 3V coin cell without issue, there is no charging circuitry, and the battery is diode blocked to prevent accidental "charging". To make that more factory-like on the 3 analyzer chassis I recently serviced, I designed a small carrier PCB that matched the battery footprint on the A09 processor PCB, having a SMT CR2032 coin cell holder on it. I used my board router to produce the three I needed, but I just posted the full artwork and shared it on OSH Park if anyone wants to have some made (or download the artwork to fabricate it elsewhere). It is shared here - https://oshpark.com/shared_projects/oAsZEWxr and you can simply use a bit of wire or single pin headers to solder it to the processor board. To correct a bit of information earlier in the thread, the 1241 does not use a special CRT, it is a monochrome CRT with a color LCD shutter assembly (red and green filters) added in front of it, with a different CRT drive board and aluminum mounting panel, along with a different display driver board to support it. To the best of my knowledge, the rest of the hardware between the 1240 and 1241 is essentially the same, with firmware changes to the EPROMS on the A09 processor board to support monochrome vs. "color". Finally, a question - has a full manual for the 12RC01 parallel/serial support pack been made available for download somewhere? I haven't found it yet, but haven't done an exhaustive search yet either. Thanks to everyone for the wealth of information shared, and also feel free to pass along or share the battery retrofit board via the Tek 1240/1241 Wiki if you think it's worthy. Cheers! --Brad |
| komradebob:
I am also looking for the manual for the 12RM21 or, at the very least, the connections for the 5 control lines. The data and address lines are as follows: Sig Pod Chan C4 4 4 C3 4 3 C2 4 2 C1 4 1 C0 4 0 A15 5 7 A14 5 6 A13 5 5 A12 5 4 A11 5 3 A10 5 2 A9 5 1 A8 5 0 A7 2 7 A6 2 6 A5 2 5 A4 2 4 A3 2 3 A2 2 2 A1 2 1 A0 2 0 D7 3 7 D6 3 6 D5 3 5 D4 3 4 D3 3 3 D2 3 2 D1 3 1 D0 3 0 |
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