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OMB-DAQ-2416-4AO User's Guide Installing the OMB-DAQ-2416-4AO
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When you connect the OMB-DAQ-2416-4AO for the first time, a Found New Hardware message opens as the
OMB-DAQ-2416-4AO is detected. When the message closes, the installation is complete.
The power LED (bottom LED) blinks during device detection and initialization, and then remains solid if
properly detected. If not, check if the OMB-DAQ-2416-4AO has sufficient power. When the device is first
powered on, there is usually a momentary delay before the power LED begins to blink, or come on solid.
Caution! Do not disconnect any device from the USB bus while the computer is communicating with the
OMB-DAQ-2416-4AO, or you may lose data and/or your ability to communicate with the OMB-
DAQ-2416-4AO.
Connecting to an OMB-AI-EXP32 with the DSUB37 expansion
connector
Use the 37-pin expansion connector to connect the OMB-DAQ-2416-4AO to an OMB-AI-EXP32 expansion
module.
To connect the two devices directly to each other, follow these steps.
1. Disconnect the USB cable from the OMB-DAQ-2416-4AO.
2. Remove the external power cable from the OMB-DAQ-2416-4AO.
3. Connect the two devices together by inserting the OMB-AI-EXP32's DSUB37 connector into the DSUB37
connector on the OMB-DAQ-2416-4AO.
Figure 1. OMB-DAQ-2416-4AO directly connected to an OMB-AI-EXP32
4. Turn the connected modules over and secure the connection by screwing the connection plate to both
modules, as shown below.
Figure 2. OMB-DAQ-2416-4AO secured to an OMB-AI-EXP32
5. Connect the external power supply to the OMB-DAQ-2416-4AO's external power connector, and plug the
other end into an AC outlet.
6. Connect the USB cable from the OMB-DAQ-2416-4AO to the host computer's USB port.
Connect to a USB 2.0 high speed hub to achieve the highest transfer rate (480 Mbps). When connected to a
USB 1.1 full-speed port, the transfer rate is limited to 12 Mbps.
Configuring the hardware
Except for the DIO pull-up selection, all hardware configuration options on the OMB-DAQ-2416-4AO are
software controlled. You can select some of the configuration options using InstaCal, such as the analog input
configuration (single-ended or differential channels). When measuring from thermocouples, make sure you
configure the channels for differential mode.