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OMB-DAQ-2416-4AO User's Guide Functional Details
14
LEDs
When the OMB-DAQ-2416-4AO is connected to a computer, in its normal idle state both LEDs are lit solid
green.
Power LED
The Power LED is the top LED on the right side of the OMB-DAQ-2416-4AO housing.
The Power LED blinks when you plug the power supply into the OMB-DAQ-2416-4AO, and continues to blink
while the device initializes the hardware. If it continues blinking for more than ½ second, then there is a
problem with the OMB-DAQ-2416-4AO and you should cycle the power.
If an application issues a "blink LED" command, then the power LED blinks a few times.
Activity LED
The (USB) Activity LED is the bottom LED on the right side of the OMB-DAQ-2416-4AO housing. It blinks
rapidly when both the USB cable and external power cables are plugged in. It continues blinking rapidly while
the device is connecting to the computer, and then turns solid.
Whenever the device receives a USB command, the Activity LED blinks off and then returns to solid green.
When an analog in or analog out scan is running, the Activity LED blinks continuously.
USB connector
The USB connector provides communication.
External power connector
Connect the OMB-DAQ-2416-ADAP power supply to this connector. The power supply provides 5 VDC, 10W
regulated power.
Screw terminal wiring
The OMB-DAQ-2416-4AO has six groups of screw terminals—three on each side of the housing. Each group
has 16 connections. Pin numbers are identified in Figure 3 on page 11 and Figure 4 on page 12.