bmcm USB-AD User manual

USB-AD
Data Acquisition System (USB)
Functional diagram
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.
16 AIn. 1 AOut. 12 Bit. ±5V.
Voltages in the ±5V range are connected at 16
analog inputs. Sampling is done with 12 bit reso-
lution 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.
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.
Open for Everyone.
Widely supported: The data acquisition system
can be used under Windows®XP/7/8 as well as
under Mac OS X, Free BSD, and Linux. The
complete software for installation and program-
ming 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.
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USB-AD
Page 2
1Start-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.
2Pin 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 connected at the 37-pin D-Sub female connector of the USB-AD.
D-Sub 37 Assignment D-Sub 37 Assignment
1 AIn 1 16 AIn 16
2 AIn 2 17 VUSB (4-5V; max. 20mA)
3 AIn 3 18 AOut 1
4 AIn 4 19 n. c.
5 AIn 5 20..27 AGND (analog ground)
6 AIn 6 28 DIn 1
7 AIn 7 29 DIn 2
8 AIn 8 30 DIn 3
9 AIn 9 31 DIn 4
10 AIn 10 32 DOut 1
11 AIn 11 33 DOut 2
12 AIn 12 34 DOut 3
13 AIn 13 35 DOut 4
14 AIn 14 36, 37 DGND (digital ground)
15 AIn 15
•The pin assignment does not correspond to the bmcm standard because the digital channels are
also accessible at the 37-pin D-Sub female. Therefore, the analog ground for Analog In 9..16 may
not be directly available if using the USB-AD together with some bmcm connection systems (e.g.
AAR, ZU37BB/-CB/-CO)!
•The max. potentials to ground must not exceed ±7V. Any channel overload may influence
measurements of other channels and may lead to wrong values.
•The digital lines are protected by 1kΩresistors. If the input voltage is not within the permitted
voltage range of 0V..5V, the device may be damaged.
•The digital ground (DGND) is connected with the PC ground.
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USB-AD
Page 3
3Interfacing 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.
3.1 Interfacing Examples for Digital Inputs
The 3.9kΩpull-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.
Optocoupler cards featuring 8 inputs are
available at bmcm.
3.1.2 Connecting a Push-Button /
Switch
Please make sure to use a push-button with
debounce protection, because otherwise
several pulses might be recorded.
The 3.9kΩpull-down resistor is absolutely
necessary to create a defined low signal!
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USB-AD
Page 4
3.1.3 Connecting a Voltage Divider
If connecting a DC voltage higher than 5V,
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).
3.2 Interfacing Examples for Digital Outputs
Serial resistors in the output lines limit the current and protect the hardware from being destroyed.
3.2.1 Connecting an LED
Only so-called low-current LEDs can be
used, because they already work with 1mA
current.
Please also observe the total current listed
in the technical data (see chapter 6).
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USB-AD
Page 5
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.
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.
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USB-AD
Page 6
4Software 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).
USB-AD
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 the installation directly from CD. If your browser prevents this, first save the
setup program to hard disc before running it separately.
Software Software product Notes Documentation
Device
driver BMCM-DR
(driver package) 1. install driver package to hard disc 2. Windows®Plug&Play installation IG-BMCM-DR (driver installation manual)
Program-
ming STR-LIBADX ActiveX control for hardware independent
programming IG-LIBADX (installation / programming manual)
STR-LIBADX-EX example programs for LIBADX ActiveX control -
SDK-LIBAD SDK with example programs for C/C++ on
Windows®, Mac OS X, FreeBSD, Linux UM-LIBAD4 (installation / programming manual)
Operating
program
NV4.6 measuring software NextView®4 available in the
Standalone versions:
•Lite: "slim" version with basic functions
•Pro: full version with complete functional
range
•Analysis:version for the analysis of stored
measuring data
NextView®4 can be used for free as a fully
functional 30-day trial version. After purchasing
the software, all projects, measurement files, and
settings can still be used.
DS-NV4
(data sheet)
UM-NV4
(user manual)
"First steps" in the NextView®4
demo project (displayed when first
starting the software)
4.1 Driver Installation
Under Windows®, the driver installation is always required for the USB-AD. Only then additional
software can be installed. To make sure the installation is done correctly, please follow the
instructions in the order as described below.
Under Mac OS X, FreeBSD and Linux, driver installation is not necessary.
4.1.1 Install Driver Package
The prior installation of the bmcm driver package BMCM-DR to the hard disc of your PC makes the driver
search for Windows®much easier. Especially in case of driver updates, only the new driver package has to
be installed, the hardware automatically uses the new version.
The link to install the driver package is located on the USB-AD product page of the "Software Collection"
CD.
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USB-AD
Page 7
4.1.2 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. Under Windows®XP, the automatic hardware detection is started by selecting the following:
- Windows®7/8:no specifications required
- Windows®XP:"Install the software automatically" (SP2: do not connect with Windows®Update!)
4.1.3 Check Installation
The entry "Data Acquisition (BMC Messsysteme GmbH)" is included in the Windows®Device Manager
after successful installation displaying the installed bmcm hardware. To open the Device Manager, proceed
as follows:
- Windows®7: Start / Control Panel / System and Security / System / Device Manager
- Windows®8: Right-click screen corner bottom left (keyboard "Windows+X") / Device Manager
- Windows®XP:Start / Control Panel / System / TAB "Hardware" / button "Device Manager"
Double click the USB-AD to show its properties. For general information, any existing device conflicts, and
possible sources of error, see TAB "General".
4.2 Programming
Programming the USB-AD with Visual Basic®, Delphi®, Visual C++™under Windows®XP/7/8 is possible
with the hardware independent STR-LIBADX. It is available on the USB-AD product page of the "Software
Collection" CD. After installation, the ActiveX control must be loaded into the respective programming
environment.
-Visual Basic®:menu "Project / Components", entry "LIBADX Object Library 4.0"
-Delphi®: menu "Components / Import ActiveX", entry "LIBADX Object Library 4.0"
If you select the entry STR-LIBADX-EX listed directly under the installation program of the corresponding
ActiveX control, you can install example programs (with source code) demonstrating how to apply the
ActiveX control.
Programming the USB-AD under Mac OS X and Unix (FreeBSD, Linux) with C/C++ is done by
means of the LIBAD4 programming interface.
The SDK-LIBAD for the respective operating system (also Windows®) is included on the product
page of the USB-AD. For further information about how to integrate the SDK in the programming
environment, please see the corresponding programming manual UM-LIBAD4.
4.3 Using USB-AD with NextView®4
Install the fully functional trial of the professional software NextView®4 for measurement data acquisition
and processing to directly test the features and functions of the USB-AD.
The setup program NV4.6 is available on the product page of the card. When first starting the
software, request a license number with the option "Request 30 days free trial version" being checked
and select your DAQ system (USB-AD) in the following dialog "Device Setup".
The data sheet and the start project of NextView®4 contain first instructions about how to install and operate
the program. For detailed information, an online help is provided.
The trial is valid for 30 days after requesting the license number. If a license is not purchased
within this period, the functional range of NextView®4 will be considerably cut down!
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USB-AD
Page 8
5Important 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 connected to the chassis of the PC, which is usually also
connected to ground. Be sure to avoid ground loops since they will cause measuring errors!
•PCs (notebooks) which are not grounded often produce high potentials to earth at the USB socket so that safe
operation cannot be guaranteed. In this case, connect the measuring system to earth.
•The gain is adjusted to even values. Therefore, only 4000 values (for 12 bit) of the full range of the converter are
used. As a result, the measuring ranges are slightly larger (e.g. ±5.12V) than the indicated measuring ranges so
that overranges can be recognized. The AD converter of the USB-AD has a code noise of up to ±1 LSB
•The device must not be used for safety-relevant tasks. With the use of the product, the customer becomes
manufacturer by law and is therefore fully responsible for the proper installation and use of the product. In the case
of improper use and/or unauthorized interference, our warranty ceases and any warranty claim is excluded.
Do not dispose of the product in the domestic waste or at any waste collection places. It has to be either duly
disposed according to the WEEE directive or can be returned to bmcm at your own expense.
6Technical Data
(typical at 20°C, after 5min., +5V supply)
•Analog Inputs
Channels // Resolution: 16 single-ended // 12 bit (2.5mV)
Sampling rate // Abs. accuracy: up to 500 values/second can be sampled (depending on software and PC) // ±5mV
Measuring range // Noise: ±5V // ±1 LSB
Surge protection: max. ±12V (when turned on), ±7V (when turned off), max. ±20mA in total of all input channels!
Input resistance // Input capacity: 1MΩ(with PC turned off: 1kΩ) // 5pF
Zero shift // Gain drop: ±50ppm/°C // ±50ppm/°C
Frequency accuracy // Frequency drift: max. ±50ppm // max. ±50ppm/°C
The values for accuracy always relate to the respective measuring range. Errors might add at worst.
•Analog Output
Voltage range // Output current: 1 voltage output with ±5V // 1mA max.
Resolution // Accuracy: 12 bit // typ. ±4 LSB, max. ±20 LSB
Zero shift // Gain drop: ±50ppm/°C // ±50ppm/°C
•Digital Inputs/Outputs
Channels // Level: 4 input and 4 output channels // CMOS/TTL compatible (low: 0V..0.7V; high: 3V..5V)
Input resistance: min. 1MΩ(with PC turned off: 1kΩ)
Current pick-up per output pin: 1mA (with app. 4V level), max. 2.5mA (with app. 3V level)
Surge protection: max. ±5.5V, protected with 1kΩ, max. max. ±20mA in total of all channels!
•General Data
Power supply: +4.5V..+5.5V from USB connection to the PC, max. 100mA
USB interface: USB 2.0 compatible (full speed)
Connections (analog + digital): all channels at 37-pin D-Sub female
CE standards: EN61000-6-1, EN61000-6-3, EN61010-1; for decl. of conformity (PDF)
ElektroG // ear registration: RoHS and WEEE compliant // WEEE Reg.-No. DE75472248
Max. permissible potentials: 60V DC acc. to VDE, max. 1kV ESD on open lines
Temperature ranges: -25°C..+70°C
Relative humidity: 0-90% (not condensing)
Dimensions // Protection type: 71 x 45 x 16 mm3, USB cable app. 1.1m // IP30
Delivery: device in plastic housing with USB cable, "Software Collection" CD, description
Available accessories (optional): demo board ZU-DBD, connecting cables ZUKA37SB, ZUKA37SS,
37-pin D-Sub plug ZU37ST, connector boards ZU37BB/CB/CO
Warranty: 2 years from date of purchase at bmcm, claims for damages resulting from improper use excluded
•Software
Software on CD (included): ActiveX Controls LIBADX (hardware independent) for programming on Windows®XP/7/8;
LIBAD4 SDK for C/C++ programming on Windows® XP/7/8, Mac OS X, Unix (FreeBSD, Linux);
trial version of the measuring software NextView®4 to test and operate the hardware
NextView®4 (optional): professional software (versions: Professional, Lite) for the acquisition and analysis of measurement
data on Windows®XP/7/8
Manufacturer: BMC Messsysteme GmbH. Subject to change due to technical improvements. Errors and printing errors excepted. Rev. 5.0 11/24/2014
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