Measurement Computing USB-3101 - Manual (Page 13)

13
Chapter 3
Functional Details
External components
The USB-3101 has the following external components, as shown in Figure 3.
 USB connector
 Status LED
 Power LED
 Screw terminal banks (2)
USB
connector
Power LED
Status LED
Screw terminal
pins 1 to 28
Screw terminal
pins 29 to 56
Figure 3. USB-3101 external components
USB connector
The USB connector provides power and communication to the USB-3101. The voltage supplied through the
USB connector is system-dependent, and may be less than 5 V. No external power supply is required.
Status LED
The Status LED indicates the communication status of the USB-3101. It flashes when data is being transferred,
and is off when the USB-3101 is not communicating. This LED uses up to 10 mA of current and cannot be
disabled.
Power LED
The power LED lights up when the USB-3101 is connected to a USB port on your computer or to an external
USB hub that is connected to your computer.