Omega Engineering OM-DAQ-USB-2401 manual Connecting Various Hardware Setups

3Hardware Setup

3.4 Connecting Various Hardware Setups

ON-DAQ-USB-2401 data acquisition systems range from simple to complex. One example of a simple system is that of one OM-DAQ-USB-2401 connected to a PC’s USB connector. A much more complex system is one that contains 10 OM- DAQ-USB-2401 units and a combination of USB-powered and self-powered hubs. Despite the wide range of possibilities in between, use of the following examples should enable you to properly connect your system.

NOTE:

In the examples that follow, the USB hubs have four external ports (downstream ports). The USB hubs used in your system may have more. Connections can be adjusted accordingly.

3.4.1 Direct Connection to Computer USB Port(s)

In this example, one DAQ unit is connected by cable to one of the computer’s USB ports. The number of USB connectors may vary from PC to PC. When you connect DAQ units directly to a USB connector in this manner, no additional power source is required since the computer’s USB connector power pins supply the DAQ with adequate power (500 mA at 4.75 to 5.25 V).

POWER

ADAPTER (OPTIONAL)

USB

Figure 3-3. Direct Connection to a Computer USB Port(s)

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