TCIC User’s Manual
36
POWER SUPPLY
Using an external power supply is optional on USB* applications but
essential for RS232 and RS485 applications.
• When used, the external power supply should be
connected to the 5V connector (CONN3).
• Near this 5V connector there is the 'LK1' jumper,
and rightwards there is the LK5 jumper:
* Option 1: 5V from the USB port
Put the 'LK1' & ‘LK5’ jumpers in the 'USB' side.
* Option 2: External 5V supply
Put the ‘LK1’ jumper in the 'DC JACK' side.
Put the ‘LK5’ jumper in the 'NOT USB' side.
The external supply should be 5V DC (±5%) only.
* Using USB hubs
The TCIC may be connected to a USB hub provided
that:
Either
1. The USB hub is externally powered such that the USB ports
of the hub meet the standard USB power specification.
In this case use option 1.
Or
2. A bus powered USB hub (with no external supply to the
hub) is used but the TCIC takes its power from the TCIC
DC jack. In this case use option 2.