Device Connectivity 14-21 xa .c o m Device Connectivity Serial Media Converters > TCC-80/80I Series 14 Specifications LED Port Power Indicator Port Power Dissipation Port Power and Optical Isolation When installing a TCC-80 or TCC-80I converter, it is important to pay attention to power consumption, RS-232 cable length, and RS- 422/485 transmission distance. In general, the TCC-80 and TCC-80I obtain 50 mW of power from the power source. Standard PC COM ports can provide 70 to 90 mW of power if the TxD, RTS, and DTR lines are connected. Moreover, the RS-232 cable should be shorter than 15 m (@ 9600 bps) to ensure that less power is lost from the host/device to the TCC-80. The remainder of the supplied power is used for transmitting the RS-422/485 signal. 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. 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 patented 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. RS-232 Side Connector: DB9 female Signals: RS-232: TxD, RxD, GND (Loop-back wiring: RTS to CTS, DTR to DSR and DCD) RS-422/485 Side Connector: Terminal Block or DB9 male Signals: (interface selected by DIP switch) RS-422: TxD+, TxD-, RxD+, RxD-, GND RS-485-4w: TxD+, TxD-, RxD+, RxD-, GND RS-485-2w: Data+, Data-, GND RS-485 Data Direction Control: ADDC® (Automatic Data Direction Control) Serial Communication Baudrate: 50 bps to 115.2 kbps Optical Isolation: 2.5 kV rms for 1 minute (TCC-80I only) Physical Characteristics Housing: ABS + PC Dimensions: TCC-80/80I: 42 x 80 x 22 mm (1.65 x 3.15 x 0.87 in) TCC-80-DB9/80I-DB9: 42 x 91 x 23.6 mm (1.65 x 3.58 x 0.93 in) Weight: 50 g (0.11 lb) Environmental Limits Operating Temperature: 0 to 60°C (32 to 140°F) Storage Temperature: -20 to 75°C (-4 to 167°F) Ambient Relative Humidity: 5 to 95% (non-condensing) Power Requirements Source of Input Power: RS-232 port (TxD, RTS, DTR) or power input jack Input Voltage: 5 to 12 VDC Input Current: TCC-80: 10 mA @ 5 VDC (with termination disabled) TCC-80I: 20 mA @ 5 VDC (with termination disabled) Standards and Certifications Safety: UL 60950-1 EMC: EN 55022/24 EMI: CISPR 22, FCC Part 15B Class B EMS: EN 61000-4-2 (ESD): Contact: 4 kV; Air: 8 kV EN 61000-4-3 (RS): 80 MHz to 1 GHz: 3 V/m EN 61000-4-4 (EFT): Power: 1 kV EN 61000-4-5 (Surge): Power: 1 kV EN 61000-4-6 (CS): 150 kHz to 80 MHz: 3 V/m EN 61000-4-8 (PFMF) Green Product: RoHS, CRoHS, WEEE MTBF (mean time between failures) Time: 2,781,161 hrs Standard: Telcordia (Bellcore), GB Warranty Warranty Period: 5 years Details: See RS-422 SGND 232TX 232DTR 232RTS DC 5~12V IN 232TX 232RX TX TX Control RX TX-I Control-I RX-I 2.5 KV Isolation Test Standard RX + - + - + - Power Indicator DC-DC Transceiver Power ADDC 232-TTL Transceiver RS-485-2W RS-485-4W TxD+ TxD- RxD+ RxD- Data+ Data- TxD+ TxD- RxD+ RxD- SGND SGND SW4