Datasheet

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2
Port Power and Optical Isolation
The RS-232 port of the TCC-80/80I is a DB9 female socket that can
connect directly to the host PC, with power drawn from the TxD line.
Electrical 2.5 kV isolation for the TCC-80I is achieved with a photo
coupler that transforms the electrical signal into light, and then re-
transforms the light back into an electrical signal on the other side. In
this way, the two electrical circuits are completely isolated from each
other. This also protects the devices from ground loop currents,
reduces damage caused by data loss, and prevents damage to the
communication interfaces.
LED Port Power Indicator
It’s easy enough to test the serial device with a multimeter to
determine that the serial device will provide enough power to the
media converter. However, it’s even easier to let the TCC-80I test the
device for you. Simply connect the TCC-80I to the device’s RS-232
port and set the SW4 switch to Test mode. If the port power LED
indicator lights up, the TCC-80I is receiving enough power. If the LED
does not light up, you will need to attach an external power source to
the TCC-80I.
Specifications
Serial Interface
Connector TCC-80-DB9/80I-DB9: DB9 male
TCC-80/80I: Terminal block
No. of Ports 2
Serial Standards RS-232, RS-422, RS-485
Isolation TCC-80I/80I-DB9: 2 kV
RS-485 Data Direction Control ADDC® (automatic data direction control)
Terminator for RS-485 N/A, 120 ohms, 120 kilo-ohms
Baudrate 300 bps to 115.2 kbps
Serial Signals
RS-232 TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422 Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w Data+, Data-, GND
Power Parameters
Input Current TCC-80: 30 mA @ 5 to 12 VDC
TCC-80-DB9: 30 mA @ 5 to 12 VDC
TCC-80I: 20 mA @ 5 to 12 VDC
TCC-80I-DB9: 20 mA @ 5 to 12 VDC
Input Voltage 5 to 12 VDC
No. of Power Inputs 1
Overload Current Protection Supported