RS-232 Serial Port Power
The RS-232 port of TCC-80 is designed with a female DB9 socket to connect directly to the host PC, with power drawn from the TxD, RTS, and DTR lines. Regardless of whether the signal is high or low, TCC-80 is still able to obtain enough power from the combined force of these three data/handshake lines. For those applications that do not use the handshake lines, a DC jack is provided for connecting a 5 to 12 VDC power supply via a USB power cord or external power adaptor.