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Agilent 54835A scope (4 channel 1GHz / 4Gs/s) repair & uphack

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lukier:

--- Quote from: eurofox on September 09, 2017, 09:33:21 am ---Why not build one like this one : https://elektrotanya.com/files/forum/2009/10/e04a036.pdf  :-BROKE

But put it in an aluminium tube or buy one like this one : http://www.benl.ebay.be/itm/RF-Active-Probe-0-1-1500-MHz-1-5-GHz-analyzer-oscilloscope/332253695460?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

--- End quote ---

I remember reading threads here about these probes, even wanted to DIY something, but then I scored multiple (single/diff) LeCroy active probes for a decent price. What stuck to me is that all these DIY designs are "RF" probes and AC coupled (no DC) and I wondered if this could be a problem.

Howardlong:

--- Quote from: eurofox on September 09, 2017, 09:33:21 am ---My scope is now 100% OK and update to the latest version.  :-+

Now the probe problem, I have 1 new 1161A supplied with the scope, maybe I’ll try to get another one on a “decent” price but need to come from Europe since shipping and duty make it not affordable in comparison to the investment of the scope.  |O

I will maybe buy 2 or 4 200mhz probes from Hantek, they are not expensive.  ???

Now why having a 1.5ghz scope and not having the appropriate probes?  :phew:

They are too expensive, 500-800€ and more + shipping cost + duty’s for 1 probe!  |O

Why not build one like this one : https://elektrotanya.com/files/forum/2009/10/e04a036.pdf  :-BROKE

But put it in an aluminium tube or buy one like this one : http://www.benl.ebay.be/itm/RF-Active-Probe-0-1-1500-MHz-1-5-GHz-analyzer-oscilloscope/332253695460?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

It should be possible to get power from the autoprobe, I could manage to build a BNC connector with a pin to get the right voltage needed for this kind of probe.  :bullshit:

Anybody experience in this area?

--- End quote ---

The 1152A 2.5GHz 100k ohm 0.6pF FET probe is frequently available for a reasonable price, but just make sure it comes with a good set of the accessory parts, particularly the walking stick ground seems to go amiss. You can survive without it by jury rigging your solution but it's not best solution.

Also the 54006a 10:1 & 20:1 (500 and 1k ohm) 0.25pF 6GHz resistive passive probe, again make sure it comes with accessories including the walking stick probe assemblies, spare resistors, AC coupler, SMA cable and the SMA-BNC adapter.

Plus...
N2874A 10:1 1.5GHz resistive (500 ohm) 2pF passive probe.
N2876A 100:1 1.5GHz resistive (5k ohm) 2.5pF passive probe.

nctnico:

--- Quote from: Howardlong on August 31, 2017, 01:50:49 pm ---
--- Quote from: nctnico on August 31, 2017, 09:49:04 am ---I tried to install XP but the problem is that the drivers for the acquisition card are not available. The Windows98 drivers won't work on XP because XP is completely different when it comes to drivers.

--- End quote ---
Do you know what the VIDs/PIDs are for the acq card? Maybe in the range 15BC:0500 to 15BC:0507?

--- End quote ---
No, according to the list from the BIOS I think it is 103C:1020 (that is the only unknown PCI device listed)

JanNousiainen:
Welp, mine is out of commission again :o I tried to update SW from HDD but setup quit before end because I had IE3, not IE4... Now scope loader just freezes.

I guess I will be getting few IDE HDD's and CD-ROM and start from scratch.

Managed to get Win 95 and Win 7 machines to see eachother in network but could not log in to shares from either one. So I set up a http server in Win7 and downloaded update SW to scope that way.

Neganur:
You should be able to just hook the HDD to your win7 machine and access the files directly.

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