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1. It maybe a serial signal of 5V amplitude (with Rx, Tx and ground). Also it may be used simply to monitor open and closures of a switch.
2. The shield wire may or may not be used as a ground, it may be pulled high in some applications connected to the 5 volt wire inside the equipment...
I am monitoring a 5VDC signal accross 2 wires. It is being toggled off and on at 1000 baud. The wires are a single pair twisted cable with ground wire shielding. This is being done with a 500' cable. I would like to replace the cable with components that would simulate the cable. How can I...
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