USB-AD
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Measurement & Control. Quite Simple. Record and output signals with the USB-AD: The USB data acquisition system is ideal for universal applications and due to the small size perfectly suitable for mobile use - just plug in and get going! Extra Small. Extra Red. Extra Low-Priced. The unique idea of the USB-AD: the data acquisition system is accomodated in the D-Sub connector housing. Not only the size is extra small but also the price. Plug & Play. The connection to the PC is realized via USB. The USB-AD provides all typical USB features (e.g. Plug&Play, Hot-Plug). Up to 127 devices can be connected and installed during operation. Powered by USB. The device is supplied with power via the USB interface. This reduces cabling efforts to a minimum and makes mobile measurements a lot easier. 16 AIn. 1 AOut. 12 Bit. ±5V. Voltages in the ±5V range are connected at 16 analog inputs. Sampling is done with 12 bit resolution and 10Hz per channel.The ±5V output can be used for analog control with 12 bit accuracy. 4 DIn/DOut Each. 1 Counter. Digital states are recorded or controlled at four digital inputs and outputs each. Digital inputs are sampled time-synchronously with the analog inputs. Open for Everyone. Widely supported: The data acquisition system can be used under Windows® XP/7/8/10 as well as under Mac OS X, Free BSD, and Linux. The complete software for installation and programming of the USB-AD is included for free. NextView®4. Try for Free. The DAQ system is supported by NextView® 4, the software for data acquisition and analysis. A fully functional 30-day trial is included with delivery to directly test the functionality of the USB-AD. Accessory. Makes everything so easy. Use the demo board ZU-DBD featuring various operating controls and sensors to generate 16 analog signals and record them with the USB data acquisition system. ► www.bmcm.de bavarian measurement company munich

1 Start-up Procedure Install the bmcm driver package (see chapter 4.1.1). Connect the USB cable of the USB-AD to the USB-interface of the PC and start the Plug&Play installation (see chapter 4.1.2). The device is supplied with power via the USB-connection. If necessary, further software components can be installed now, as described in chapter 4. 2 Pin Assignment Das USB data acquisition system features 16 analog inputs, 1 analog output and 4 digital inputs and outputs each (low: 0V..0.7V; high: 3V..5V). An auxiliary voltage (e.g. for sensor supply) is provided at pin 17. Signals are...

3 Interfacing Examples for the Digital Lines of the USB-AD The following basic connection examples demonstrate the use of the digital inputs and outputs. The pin assignment of the 37-pin D-Sub female connector is described in chapter 2. The 3.9kQ pull-down resistor sets the input to low if no voltage is applied there. 3.1.1 Connecting an Optocoupler Optocouplers provide optimum protection at each input line. With them, it is possible to connect higher voltages and to protect the hardware from being destroyed. In this regard, please also see application examples of the optocoupler you use. O...

3.1.3 Connecting a Voltage Divider If connecting a DC voltage higher than 5 V, a voltage divider must be used so that 5V at the maximum are applied at the device input. Exceeding the 5V input voltage might cause damages to the device. The relation between the two resistors to be used is calculated with the following formula: U/U1= (R1+R2)/R1 Input voltages less than 5V are also sufficient (high >3V). 37-polige D-Sub Buchse/ 37-pin D-Sub female 3.2 Interfacing Examples for Digital Outputs Serial resistors in the output lines limit the current and protect the hardware from being destroyed....

3.2.2 Connecting a Relay A connected relay is ideal to switch higher currents. Since the field coil of the relay requires a higher current than provided by the measurement system at one line, a transistor is connected ahead. O Relay cards featuring 8 outputs are available at bmcm. 3.2.3 Connecting a Lamp A transistor can be used to switch higher loads. The selected transistor must comply with the maximum switchable current. The figure on the right shows an application with a maximum current of 100mA.

4 Software Installation All software and documentation available for the USB-AD are integrated on the "Software Collection" CD included with delivery. When inserting the CD, a CD starter opens automatically (otherwise: start openhtml.exe). Change to the product page of the USB-AD by selecting the entry "Products" in the CD starter and then the hardware ("USB-AD") listed under the interface "USB". For detailed information about installing or operating the software, please see the corresponding manuals. The Adobe Acrobat Reader is required to open the documentation in PDF format. You can run...

Plug&Play Installation As soon as the USB-AD is connected to the PC, the system announces the new hardware. Since the driver package has been copied to hard disc before, the hardware will be installed automatically under Windows® 7/8/10. Under Windows® XP, the automatic hardware detection is started by selecting the following: - Windows® 7/8/10: no specifications required - Windows® XP: "Install the software automatically" (SP2: do not connect with Windows® Update!) Check Installation The entry "Data Acquisition (BMC Messsysteme GmbH)" is included in the Windows® Device Manager after...

5 Important Notes for Using the USB-AD • The device is only suitable for extra-low voltages - please observe the relevant regulations! Only use the device with housing closed. ESD voltages at open lines may cause malfunction. • Only use non-solvent detergents for cleaning. The product is designed to be maintenance-free. • Signal cables are connected at the 37-pin D-Sub female connector - preferably use shielded cables. For best possible interference suppression, connect shield at one end only. Close open inputs if necessary. • The device ground and the chassis are electrically...