Computer Interfacing
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RS422 terminal impedance used or unused~

terminal impedance influence to RS422


 

       Computer Interfacing Forum Index -> RS422 and RS485
Author Message
tim
Guest







Nov 27, 2012 8:33 am

i have a problem of rs422's terminal impedance,when i use the terminal resistor,the response's voltage level was 0.8V~2.5V,if i take off the terminal resistor 100 Ohm,the voltage level will be 0V~3.3V,why the dc level change ,anyone know that?

       Computer Interfacing Forum Index -> RS422 and RS485
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