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

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JanNousiainen:

--- Quote from: Neganur on September 10, 2017, 05:59:18 pm ---You should be able to just hook the HDD to your win7 machine and access the files directly.

--- End quote ---

None of the machines I have at hand have IDE bus, only SATA. I do have older machines with IDE but they are about 1000 km away...

USB to IDE adapter would work. I have one of those but you guessed it, it is also somewhere else. I'll check if I can get cheap one locally.

eurofox:

--- Quote from: JanNousiainen on September 11, 2017, 07:22:35 am ---
--- Quote from: Neganur on September 10, 2017, 05:59:18 pm ---You should be able to just hook the HDD to your win7 machine and access the files directly.

--- End quote ---

None of the machines I have at hand have IDE bus, only SATA. I do have older machines with IDE but they are about 1000 km away...

USB to IDE adapter would work. I have one of those but you guessed it, it is also somewhere else. I'll check if I can get cheap one locally.

--- End quote ---

I have since several years a device that connect USB to all common hard disk technology, ATA, SATA, IDE ….
I don’t remember the price I pay for it but it was quite cheap.



I’m surprised that you got problems to transfer the updates over the network.
I reinstall de driver for network card, enable Microsoft client with TCPIP and allow disk sharing without password.
On my Windows 10 notebook I make “discovery of network” active, the scope was discovered and provide access to the hard disk of the scope and this ways I could transfer the update files.

eurofox:

--- Quote from: Howardlong on September 09, 2017, 03:21:10 pm ---
--- 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.

--- End quote ---

The 1152A with accessories go for more than what I pay for the not working scope.

On the top of that they are usually available on the US market, this mean a lot of shipping cost and import duties.

This is the classical problem when you buy a second and high bandwidth scope, the probes cost are equal or superior of the scope itself because on the second hand market, a working probe is sold from 25% to 50% of the a new one, the scope is from 5% (not working) to 25% for a working one.

JanNousiainen:
Bought USB -> IDE / SATA adapter with power supply for drive and 2 x 40 GB IDE HDD for 25€, now I have to wait for them to arrive from china...

Someone:

--- Quote from: eurofox on September 11, 2017, 10:10:55 am ---The 1152A with accessories go for more than what I pay for the not working scope.

On the top of that they are usually available on the US market, this mean a lot of shipping cost and import duties.

This is the classical problem when you buy a second and high bandwidth scope, the probes cost are equal or superior of the scope itself because on the second hand market, a working probe is sold from 25% to 50% of the a new one, the scope is from 5% (not working) to 25% for a working one.
--- End quote ---
Even for a new scope its normal to spend equal to or more than the purchase price on probes. If you're stuck with your mindset of cheap broken scopes for repairs then you should buy broken probes and repair them to go with it.

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