Products > Test Equipment
Interfacing a Rigol LH1116 Active Logic Head onto a Cypress FX3 16ch 100MHz LA?
(1/2) > >>
LinuxGuy123:
I am in need of a PC based 100MHz logic analyzer for a project.  I don't have $$$ for a commercial unit.

The Cypress EZ-USB FX3 Explorer kit can be used as a 100MHz logic analyzer with Sigrok PulseView.

https://community.infineon.com/t5/Knowledge-Base-Articles/EZ-USB-FX3-Explorer-kit-as-16-channel-100-MHz-logic-analyzer-with-sigrok/ta-p/283993
https://www.infineon.com/cms/en/product/evaluation-boards/cyusb3kit-003/?utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_all_integration-dev_kit

The FX3 could also be used to generate signals or interface directly to a variety of devices - I2C, SPI, etc.   It is a programmable device and could do many things if one took the time to program it.  Cypress provides many examples such as memory device programming, etc.   

The I/O on the FX3 is unbuffered and unprotected.  It will operate at a variety of input voltages from 1.2 to 3.3V. 

I have an unused Rigol LH1116 Logic Head.   

Does the LH1116 have built in buffering ?   

Does it have over voltage protection ?   

What is its input voltage range ?  My LH1116 says "Max +/-40V".  It also says Input Z: 100Kohm.   Does the head convert +/-40V to logic level (3.3V ?)

What would it take to interface the LH1116 to the FX3 ?  Does someone have a pinout for it ?  What connector does the LH1116 ribbon cable mate to ?

Thanks





 
thm_w:
What is the budget.
What is the bandwidth requirement for how many signals.

DSLogic Plus can be had for $100 with sample rates up to 400MHz (4 channel buffered)
https://www.dreamsourcelab.com/shop/logic-analyzer/dslogic-plus/
LinuxGuy123:
Thanks for the link.
The DSLogic looks like a great product.   I'm going to use the FX3 because I need to generate some signals in order to test the DUT. 
thm_w:
Are you expecting to generate and monitor signals simultaneously using the FX3? Does sigrok support that?
Maybe start with generating and buffering signals first.


--- Quote ---What is its input voltage range ?  My LH1116 says "Max +/-40V".  It also says Input Z: 100Kohm.   Does the head convert +/-40V to logic level (3.3V ?)
--- End quote ---

40V max, if its active maybe its buffering it, you'd have to open it up.
With the dslogic its just a passive probe: https://sigrok.org/wiki/DreamSourceLab_DSLogic_Plus

You can read some of the threads here around logic analyzer board design if you really want to get into the details.
LinuxGuy123:

--- Quote --- Min/max voltage    -0.6V — 6V, +-30V with provided probe-wires
--- End quote ---
Whatever that means.
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod