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CD Start Page | DATA ACQUISITION ONLINE Page | DATA ACQUISITION PRODUCTS Page |
The OMB-DAQ-55 and OMB-DAQ-56 Personal Daqs are full-featured data acquisition products that utilize the Universal Serial Bus (USB), which is built into almost every new PC. Designed for high accuracy and resolution, the 22-bit OMB-DAQ-55/56 data acquisition systems directly measure multiple channels of voltage, thermocouple, pulse, frequency, and digital I/O. A single cable to the PC provides high-speed communication and power to the OMB-DAQ-55/56. No additional batteries or power supplies are required, except when using bus-powered hubs.
The OMB-DAQ-55/56 modules are the first products in a new family of low-cost, USB-based products from OMEGA. Because of the strict power limitations of the USB, the modules incorporate special power-management circuitry to ensure adherence to USB specifications.
The OMB-DAQ-55/56 avoid many of the limitations of PC-Card (PCMCIA) data acquisition devices and offer advantages over many PC plug-in data acquisition boards as well. The OMB-DAQ-55 data acquisition system offers 10 single-ended or 5 differential analog (up to ▒20 V full scale) or thermocouple input channels,16 programmable ranges, 500 V optical isolation, 8 digital I/O lines, and 2 frequency/pulse/ duty-cycle channels.
The OMB-DAQ-56 offers twice the I/O capacity as the OMB-DAQ-55 in the same size package.To simplify attachment of signals and transducers, the OMB-DAQ-55/56 modules feature convenient, removable screw-terminal input connections.
Software
The OMB-DAQ-55/56 are supplied with an enhanced version of Personal DaqView, Windows 95 based data logging application that allows you to set up your
acquisition applications and
save acquired data directly to disk. The OMB-DAQ-55/56 are also shipped with PostView, a
post-acquisition application that permits you to display acquired data previously saved to a file. Drivers for Visual Basic, Delphi and C++ for Windows 95 are also included. In addition, drivers are available for icon-based
software packages, such as DASYLab and LabVIEW.
About USB
The Universal Serial Bus (USB)
is a new standard for connecting PCs to peripheral devices such as printers, monitors and modems. USB offers several advantages over conventional serial and
parallel connections, including higher bandwidth (up to 12 Mbits/s) and the ability to provide power to the peripheral device.
USB is ideal for data acquisition applications. Since USB connections supply power, only one cable is required to link the data acquisition device to the PC, which most likely has at least one USB port. In addition, the USB's high-speed data transfer (from the data acquisition device to the PC) allows for a real-time display of acquired data, while eliminating the need for expensive memory in the acquisition device.
With the backing of Intel, Microsoft, and hundreds of other computer-related companies, USB is quickly becoming a new universal standard.
Personal Daq Expansion
The OMB-Daq-55 and
OMB-Daq-56 can be easily expanded with one of two available snap-on expansion modules,
bringing the total capacity up to
60 analog or thermocouple channels, 32 digital I/O lines, and 4 frequency input channels. Furthermore, USB hubs can be used to create
multi-unit systems containing up
to 100 OMB-DAQ-55/56 modules attached to a single PC. Using
this strategy,a multi-unit
OMB-DAQ-55/56 system can
provide up to 8,000 analog and digital I/O lines. See chart below for available channel capacity.
VIEW an Adobe Acrobat pdf file for more product info (requires Acrobat Reader).
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