Interfacing a USB Parallel port

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Rajat Sharma 2011-11-1

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https://ww2.mathworks.cn/matlabcentral/answers/20053-interfacing-a-usb-parallel-port

评论： Walter Roberson 2025-2-25

please help ,i use matlab with my laptop which doesn,t have lpt port ,i got usb 2 lpt cable(db25 connector) but windows recognise it as “usb printer support ” not as ordinary lpt port,matlab didn't recognise any lpt port

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Priyanka 2025-2-25

编辑：Walter Roberson 2025-2-25

Hi Walter, Thank you for your response, It was helpful. I have minicircuit ZX36-31a-pps+ attenuator ( https://www.minicircuits.com/appdoc/AN70-004.html ) with its cable that has 25 pin D sub adaptor to interface with PC. Since, my Laptop does not have this port, I bought parallel port to USB convertor. It make sense with what you said. I havnt work with such device before requiring 6 bit data to control its state. The software provided by minicircuit does not identify device connection either. I am planing to give control signal with arduino now. I guess that would be easier. Thanks

Walter Roberson 2025-2-25

Are you able to run the "Mini-Circuits" digital attenuator control program to configure the parallel port address?

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回答（1 个）

Walter Roberson 2011-12-8

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https://ww2.mathworks.cn/matlabcentral/answers/20053-interfacing-a-usb-parallel-port#answer_30797

I believe that I have read that this is a matter of having used the incorrect cable. There are two different possible cables to connect to parallel ports, and I gather that some companies are not very careful about their labeling.