Products > Test Equipment
Picoscope Hack
jasonRF:
--- Quote from: markone on December 04, 2022, 06:01:03 pm ---
--- Quote from: jasonRF on December 04, 2022, 05:48:20 pm ---
--- Quote from: markone on December 04, 2022, 11:04:47 am ---
In the mean time i was looking to Picotech webshop for one 3203D ... just to find out that chip shortage incidentally hits only "low cost" SKUs.
The cheapest model is an 3205D (2CH 100MHz 1GS/s) at whopping price of 979 euros plus taxes, that is the same cost of SDS2104X-Plus and I even paid less my Rigol HDO1074 ...
--- End quote ---
I recommend looking at other vendors. They do not seem to save the best stock for themselves.
Jason
--- End quote ---
Looked everywhere, beyond the attached list, it seems that 3203D, as well as other models with midrange prices, are vaporized or went in another dimension.
Only jewelery pieces are still available, it smells it's not matter of chip shortage ;).
--- End quote ---
Interesting. I made my post after quickly seeing that Mouser has a couple in stock. But I order from the US so Mouser is easy - I am not sure how useful it is from the rest of the planet.
jason
markone:
--- Quote from: jasonRF on December 04, 2022, 06:14:27 pm ---
--- Quote from: markone on December 04, 2022, 06:01:03 pm ---
--- Quote from: jasonRF on December 04, 2022, 05:48:20 pm ---
--- Quote from: markone on December 04, 2022, 11:04:47 am ---
In the mean time i was looking to Picotech webshop for one 3203D ... just to find out that chip shortage incidentally hits only "low cost" SKUs.
The cheapest model is an 3205D (2CH 100MHz 1GS/s) at whopping price of 979 euros plus taxes, that is the same cost of SDS2104X-Plus and I even paid less my Rigol HDO1074 ...
--- End quote ---
I recommend looking at other vendors. They do not seem to save the best stock for themselves.
Jason
--- End quote ---
Looked everywhere, beyond the attached list, it seems that 3203D, as well as other models with midrange prices, are vaporized or went in another dimension.
Only jewelery pieces are still available, it smells it's not matter of chip shortage ;).
--- End quote ---
Interesting. I made my post after quickly seeing that Mouser has a couple in stock. But I order from the US so Mouser is easy - I am not sure how useful it is from the rest of the planet.
jason
--- End quote ---
I order material from Mouser in regular basis, but some products are "inhibited" for EU region, 3203D is one of those.
_Wim_:
--- Quote from: markone on December 04, 2022, 02:39:38 pm ---Do you want to proceed with a Pspice simulation to estimate the impact of input resistor removal ?
If so you should gently unsolder all SMT capacitors and take precise value measurements ... :D
--- End quote ---
No, that was not really the goal. It was more to understand the topology used...
_Wim_:
--- Quote from: markone on December 04, 2022, 03:41:12 pm ---Dear WIM, I have a favor to ask you : could you gently check how the first three E2PROM pins are connected (A0,A1,A2) ?
If I look at Picoscope board PCB image I can spot a second unpopulated E2PROM footprint (also present in 2000A series) with readable address pins configuration but I wonder at which address is set the mounted E2PROM.
--- End quote ---
Not sure why you would need this, but A0 to Vcc, and A1+A2 to Vss...
markone:
--- Quote from: _Wim_ on December 04, 2022, 06:40:29 pm ---
--- Quote from: markone on December 04, 2022, 03:41:12 pm ---Dear WIM, I have a favor to ask you : could you gently check how the first three E2PROM pins are connected (A0,A1,A2) ?
If I look at Picoscope board PCB image I can spot a second unpopulated E2PROM footprint (also present in 2000A series) with readable address pins configuration but I wonder at which address is set the mounted E2PROM.
--- End quote ---
Not sure why you would need this, but A0 to Vcc, and A1+A2 to Vss...
--- End quote ---
Thank you very much, what you report confirms that they used the standard FX2 address for E2PROM in generic device mode, and this is a good news ;)
Be patient, just another question ... :) :
in your first post you said :
Using the attached table with device models, a 5444B is listed 4 places "higher" than the 5442B. So I incremented "1C" => "20" for byte "0B"
Which table were you referring to ?
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