Products > Test Equipment
HP/Agilent 1675x logic analyzer card memory up-hack
MarkL:
--- Quote from: Patrick.M on April 05, 2018, 03:49:13 pm ---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.
--- End quote ---
No, I had two 16751A and turned them into 16752A. DocBen reported he was able to make a 16740A into a 16752B here:
https://www.eevblog.com/forum/testgear/hpagilent-1675x-logic-analyzer-card-memory-up-hack/msg1361396/#msg1361396
I was only saying that since you and I both have 16750-65501 etched on the cards, I was expecting it to be the same base model but with different ID resistors. Since the 16752A ID combination didn't work for your 16742A, there must be something else that's making the cards different. I haven't seen an EEPROM on these models (unless I missed it), so I would look for a physical difference.
Patrick.M:
I must have done somthing wrong, solder splash, or somthing. Once I have the time and interest to play with this again, I'll givite it another go. Meanwhile, I saw absolutely, as I can be, no physical differences between the one 142A and three 152A PCBs. The only difference are subtle marking differences (suffixes) on the larg Xlinx chips. Referencing the data sheet for this Xlinx series has not been any help either.
PrecisionAnalytic:
--- Quote from: csc316 on March 28, 2018, 11:23:51 am ---I can confirm that converting a 16533a 1GSa oscilloscope board to a 16534a 2GSa board is as simple as swapping resistors R809 and R810. Just did it.
--- End quote ---
Earlier today I referenced this upgrade hack on the [HP-Agilent-Keysight-equipment] groups.io post since work was being performed on similar systems and that reminded me about the HP16533A hack into a 16534A by just swapping two resistors and was just verified with images:
https://groups.io/g/HP-Agilent-Keysight-equip…/message/96296
Alexandre just made an English post also:
https://tabajara-labs.blogspot.com/2019/05/repair-of-hp16533a-and-for-that-matter.html
When I need to, or use, the HP 16601A... I'll have to keep this in mind and plan to perform. Was waiting until I was sure about the SCSI Pi or other Emulator system I was going to make so I can use an IDE (PATA) or better newer drive, i.e. SATA. Probably can use an SD card since the data transfer rate isn't so high... though read write cycles, longevity and integrity was more the goal.
Anyone aware of any hacks for the 16601A?
I was thinking:
1. Making a SCSI emulator to update the drives
2. Wondering what the memory upgrade opportunities
3. Wondering about upgrading the motherboard
I haven't read into the later two capabilities yet and have read there aren't schematics for the HP 1653X or 16601A.
schenkmi72:
--- Quote from: DocBen on November 28, 2017, 05:49:08 pm ---Yatta!
So I have finally gotten around to try to get a 16740a to be a 16752b.
On my third attempt I succeed. (keep in mind however this just passes the self tests. I havent made any actual measurements with it so it might fail when doing actual work)
from R735 to R82: - -RR-RRR-
does it. (- open, R well, you know)
I used 1K 0.1% Resistors just like they are used on the board
--- End quote ---
I've try this on my 16740A but it didn't work for me. I already got an error while booting up and the self test says that it can't load the FPGA. I've tryied the 16742A ID resistores too but same issue. As it's a bit hard to acquire working 1674x cards I don't like doing more experiments.
Cheers
Michael
SpacedCowboy:
Just wanted to say thank you to those who originally posted this :)
I've just successfully bought a $100 16750A to go with a 16702B analyzer (which cost $340) and I now have a "16752A" board which on their own go for $900 or so.
Disregarding the price, I can now sample a few full video-frame's worth of data coming off the bus, including all address lines, data lines and control lines. Excellent :)
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