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I have got through the calibration/adjustment procedure up to "Storage Triggering". My problems now are twofold. I can't understand Section #3 - "Check/Adjust Storage NORM Trigger DC Balance" (P4-89

Indeed it is now that I googled "Esterline Angus Chart Recorder." Fantastic eye Tom. OK, since I do not own an Esterline Angus Chart Recorder, is there anyone in this group that has one that matches

It's the front from an Esterline Angus chart recorder. And if anybody knows what the glass part on the right

So, just fyi.. I went back to the PO and asked "What about the media mail option?" ... Bascially, it was "Oh, that? $3.17" (for what was originally $11.80). Pretty shocked that, like Dave says, they

"No kidding, CWRU offered you a job? That's my alma mater; I got my BSEE there in 1988." Actually it came through a friend of mine who works there, said he was sure I would get it. I taught him basic

Dave, It IS all there in the schematics, I just managed to miss the crucial one! Schematic <14> is the updated 6802 processor board, it uses 4k EPROMS instead of 1k EPROMS and the SRAMs are also four

Yes, thanks Colin! And if anybody knows what the glass part on the right is (in the original photos) and wants it, please let me know. Someone suggested it might be a blast shield of some sort. But I

For anyone who is following this thread, I took three photos and some measurements of the catches on my 7623A Option #8 and emailed them to David. I wasn't too sure that I should be putting these

Roger I think the 6802/MPU info is? in the Change section at the end of the manual. Why Tek did not include an updated schematic I? cant say unless the schematic didnt change ? Dave

Adrian and Chris, The CPU on the CPU board is labelled 6802, the earlier boards had a 6800 processor. My Artek manual shows the 6800 and 6802 interrupt circuitry separately but doesn't have the 6802

I acquired one of these function generators recently, together with a TM504 mainframe. While I have sourced a Manual for the TM504 in the UK, the FG504 is another story. I have had no offers so far.

Another thought: the trace output on the X-Y display might also be correct, but as if the intensity is set high so you're seeing the edges of a trace which has bloomed to fill half the screen. Do

The graticule display on the X-Y output looks good to me. Mine's exactly the same. You can reduce the size of the little circles by turning down the graticule intensity a whisker. The scan image

Hi Chris & Roger Yes, "jumpy mess" about describes what I see too! Stills don't do it justice really, but you can see images here (ignore the apparent lack of focus, that's shutter speed combined with

If the 7912AD is a 525-line model and you set the jumper on the A28 board for 625 lines, the readout gets repeated at the bottom of the TV display because the readout board's counters aren't set up to

Great! Even if we don't quite know why, that's still progress.

Adrian, There is a jumper on the A28 board for 525/625 operation of the composite video but it should affect the 7000 plugin readout (CPU generated) and the read gun scanning consistently. There are

I brought home today a 11403A. But when I got it home the "MENUS" -> Waveforms button had vanished. https://photos.app.goo.gl/WcN64Fi3CuAgUa7dA I can salvage buttons off the stack of 11401 and 11402s

Hi Fabio, Thanks for your comments. The film cap seemed like it was zdded as a repair attempt and wasn't particularly large. Maybe 7 mm square and clearly marked 47 mf. Like a small blue chicle. I

Just to let ya'all I posted the DC508 on Ebay with pictures it does power on and read outs are perfect like i said it looks to be new not used or used very little. Jim