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USB-1608FS User's Guide
External components
The USB-1608FS has the following external components, as shown in Figure 3-1.
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USB connector
!
LED
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Screw terminal banks (2)
Screw terminal
Pins 21 to 40
USB connector
The USB connector is on the right side of the USB-1608FS. This connector provides +5 V power and
communication. The voltage supplied through the USB connector is system-dependent, and may be less than 5
V. No external power supply is required.
LED
The LED on the front of the USB-1608FS indicates the communication status. It uses up to 5 mA of current and
cannot be disabled.
Table 3-1
When the LED is...
Steady green
Blinks continuously
Blinks three times
Blinks at a slow rate
LED
Figure 3-1. USB-1608FS
explains the function of the USB-1608FS LED.
Table 3-1 LED Illumination
It indicates...
The USB-1608FS is connected to a computer or external USB hub.
Data is being transferred.
Initial communication is established between the USB-1608FS and the computer.
The analog input is configured for external trigger. The LED stops blinking and illuminates
steady green when the trigger is received.
Screw terminal
Pins 1 to 20
USB connector
/ cable
3-2
Functional Details
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