External Components; Usb Connector; Led - Measurement Computing USB-1208LS User Manual

USB-1208LS User's Guide

External components

The USB-1208LS has the following external components, as shown in
Figure 3-1.
!

USB connector

!

LED

! Screw terminal banks (2)
USB connector
The USB connector is on the right side of the USB-1208LS housing. This connector provides +5V power and
communication. The voltage supplied through the USB connector is system-dependent, and may be less than
5V. No external power supply is required.
LED
The LED on the front of the housing indicates the communication status of the USB-1208LS. It uses up to 5
mA of current and cannot be disabled.
When the LED is...
Steady green
Blinks continuously
Blinks three times
Blinks at a slow rate
Figure 3-1. USB-1208LS external components
Table 3-1
Table 3-1. LED illumination
It indicates...
The USB-1208LS is connected to a computer or external USB hub.
Data is being transferred.
Initial communication is established between the USB-1208LS and the computer.
The analog input is configured for external trigger. The LED stops blinking and illuminates
steady green when the trigger is received.
defines the function of the USB-1208LS LED.
3-2
Functional Details