Author Topic: Choosing a logic anaylser - will my expectations lead me to bankruptcy?  (Read 2770 times)

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Offline egonotto

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Re: Choosing a logic anaylser - will my expectations lead me to bankruptcy?
« Reply #25 on: October 28, 2024, 03:10:08 pm »
And if you don't require mixed signal, the Digital Discovery makes even more sense.

The digital discovery is only 5V, the analog one is -25 to +25

Hello,

no for the digital inputs of the Analog Discovery 2: “Input and output pins are LVCMOS3V3. Inputs are 5V tolerant. Overvoltage up to ±20V is supported.”

Best regards
egonotto
 

Offline PA0PBZ

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Re: Choosing a logic anaylser - will my expectations lead me to bankruptcy?
« Reply #26 on: October 28, 2024, 03:37:57 pm »
no for the digital inputs of the Analog Discovery 2: “Input and output pins are LVCMOS3V3. Inputs are 5V tolerant. Overvoltage up to ±20V is supported.”

You are correct, the spec -25/-25V on the front page is for the analog (scope) channels, even for the discovery 3.

Keyboard error: Press F1 to continue.
 
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Offline iMo

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Re: Choosing a logic anaylser - will my expectations lead me to bankruptcy?
« Reply #27 on: October 28, 2024, 03:44:46 pm »
A simple resistor for the input protection is not enough for the +/-25V, imho.
Resistor should be large value (because the internal on-chip ESD clamping diodes are for 5mA max usually) and that will limit the BW/response.

The Analog Discovery 2 is using 220ohm PTC and additional 2 external DB3S406F fast 40V/75mA clamping diodes at its digi inputs.

PS: Some 15y back I was an early adopter of the Dangerous Prototypes first larger product - the Open Bench Logic Sniffer LA - still with almost alpha fw for the fpga and pic mcu and pc app at that time. Lot of fun with finetuning of the fw and pc app afterwards (I think we went from 50MHz sampling rate up to 200MHz !!).. $50 incl. shipping, I was using it a lot, well but today rather a toy..

Quote
The advanced trigger offers many features found in an HP16500 / 16550 timing logic analyzer. It offers 16 sequence levels with two way branching (a programmable state machine), ten pattern value comparisons, two range checks, two edge checks, and two counter/timers.

fyi - http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer   .. the page was last modified in Jan2015..  :D :D
Advanced HP16550 triggers:
http://dangerousprototypes.com/docs/Logic_Analyzer_core:_Introduction
« Last Edit: October 28, 2024, 05:22:20 pm by iMo »
Readers discretion is advised..
 

Online Doctorandus_P

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Re: Choosing a logic anaylser - will my expectations lead me to bankruptcy?
« Reply #28 on: October 28, 2024, 06:33:00 pm »
I quite like my Kingst LA2016. On the box is written inputs can withstand from -50V to +50V and it works with Sigrok / Pulseview. Kingst also has support for Linux, so I could even use the original software, but I quite like Pulseview. You do need a pretty recent Pulseview version for the Kingst to work properly I now have: 0.5.0-git-9b8b734.
 

Offline eTobeyTopic starter

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Re: Choosing a logic anaylser - will my expectations lead me to bankruptcy?
« Reply #29 on: October 28, 2024, 10:13:34 pm »
I have now looked at the Dslogic Plus. It looks like it has a nice trigger setup, where one could really get creative.  ;D
There is not a big community, and there was some license problems, but i have not read any bad things about it. The manual is very detailed, much more than the Kingst LA2016 for example. Its also about 40€ cheaper. The probes look good too.

The software is maintained.  :-+
"Sometimes, after talking with a person, you want to pet a dog, wave at a monkey, and take off your hat to an elephant."(Maxim Gorki)

SDS800X HD bugs/issues/workarounds (Updated 17. Feb. 2025)
 
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Offline ebastler

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Re: Choosing a logic anaylser - will my expectations lead me to bankruptcy?
« Reply #30 on: October 30, 2024, 05:22:17 am »
On DSView, they tried to make the UI look similar to Saleae, but it was a huge disaster.

In which respect? I have the DSLogic on my wishlist, have played with DSView in demo mode and found it quite neat. Can you elaborate on its shortcomings, or link to reviews which do so?

@BillyGo -- I was hoping to get more details from you on the DSView software. What do you dislike about it, where is the "huge disaster" in your opinion?
 
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