Products > Test Equipment
HP/Agilent 1675x logic analyzer card memory up-hack
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MarkL:
Maybe there's some dependency on the exact model number after the dash.

The number under the sticker on both my 16751A (now turned into 16752A cards), is 16750-65501, same as your 16742A.

Did you try the resistor combination that I posted in the beginning of this thread?
Patrick.M:
MarkL,

Yes, with 1K resitors. This is the only, 16742A I have, so I'm being a bit carfull with it and was rather happy to see it operate again. I seem to have an overt fondness & respect for this legancy equipment that sticks in my mind,  as I remeber all to well how unique and expensive it was in my earler years. Now my shop is awash in it, but only with what I use or really like to play with.

The main frame is a 16702B (SN: MY42001077) with option 003, OS, Software: A.02.90.00
16742A (SN: MY42000173)

The upgrade on the scope from a 16553A to a 165534A wen't quite well as did my 16750A to 16752A.
MarkL:
Interesting that didn't work.  Maybe there's some differences or changes elsewhere on your board that makes it a 16742A.

One thing we've all noticed is that Agilent was quite sloppy in removing ID resistors to create the target board model.  Do you see flux residue or sloppy soldering anywhere else on your 16742A besides the resistors already pointed out?

Would you mind posting some high res photos front and back?  Or since you have both models there, you could also compare the two up close.

You have the same 16702B I have with the same software, so I don't think that's a factor.  There should be no harm in moving the resistors around, other than the mechanical stress from soldering.  But I understand your concern.
Patrick.M:
Nope, boards were clean. I actually did post images of the two boards about three days ago. I'm still trying to figure out how to use this blog, so you may need to scan for them as I seem to have to rescan where I was when I make a reply (post) every time I gat back on.
Patrick.M:
Mark,

So, I'm assuming you were sucsessful at moving your 16742A to a 16752A, yes?
Sorry as It's a bit clumsy for me researching the blog for just posts from you. Perhaps it's because I'm using an iPad.
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