Functional Details; External Components; Usb Connector; Status Led - Measurement Computing USB-3100 Series User Manual

Functional Details

External components

The USB-3105 has the following external components, as shown in Figure 3.


USB connector



Status LED



Power LED


Screw terminal banks (2)
Screw terminal
pins 1 to 28
USB connector
The USB connector provides power and communication to the USB-3105. 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-3105. It flashes when data is being transferred,
and is off when the USB-3105 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-3105 is connected to a USB port on your computer or to an external
USB hub that is connected to your computer.
Screw terminal
pins 29 to 56
Figure 3. USB-3105 external components
12
Status LED
Power LED
USB
connector
Chapter 3