bmcm USB-AD16f User manual

USB-AD16f
USB Data Acquisition System
Measurement & Control.
Extremely Powerful.
Precisely record and output signals with the
USB-AD16f: The high-performance USB data
acquisition system accommodated in a stable
aluminum housing impresses by high technical
standard and excellent price-performance ratio.
It is especially suitable for dynamic applications.
16 Analog Inputs. 250kHz
16 Bit. 10V, 5V, 2V, 1V.
16 analog inputs can be sampled with 16 bit
resolution and 250kHz total sampling rate so that
even slightest peaks of high-frequent signals do
not remain undetected. The measuring range is
selected via software for each channel
separately.
2 Analog Outputs. 16 Bit. 10V.
The two 10V outputs can be used for analog
controls with 16 bit accuracy.
Clearly Safe.
Due to the galvanic isolation of the analog
channels the DAQ system and the PC are
perfectly protected.
4 Digital Inputs/Outputs Each.
1 Counter.
Digital states are recorded or set at four digital
inputs and outputs each. Digital inputs are
sampled time-synchronously with the analog
inputs. The additional counter input is
galvanically isolated.
Plug & Play.
The connection to the PC is realized via USB. The
USB-AD16f 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.
Optimal for Windows.
The drivers and programming interface is
optimized for 64Bit under Windows® 10/11. All
software for installation and programming of the
USB-AD16f is included free of charge.
NextView®. Try for Free.
The DAQ system is supported by NextView®, the
software for data acquisition and analysis. A fully
functional 14-day trial is included with delivery to
directly test the functionality of the
USB-AD16f.
Functional diagram

USB-AD16f
Page 2
1Start-up procedure
All available software and documentation for the USB-AD16f are located on www.bmcm.de/usb-ad16f-en
in the tab Downloads.
1. Step: Connect up
Please attach both of the red frames with the feet facing down with light pressure at the
ends of the housing as shown on the product picture. Connect the provided USB cable to
the device and to a free USB port of the PC. Then start the plug and play installation. The
device gets its power supply through the USB connection.
2. Step: Installation device driver
Install the latest driver package in order to use the USB measurement device. You will find
the package on www.bmcm.de/usb-ad16f-en in the tab Downloads in the category
BMCM –Drivers. Open the manual device drivers on www.bmcm.de/man-driver for more
information.
3a. Step: Measuring with NextView
To be able to use your measurement system with NextView, you just need to download
and install the latest version of NextView on www.nextview.de/download. In case you did
not buy NextView, request a free of charge trial version when first starting NextView. Find
more information about NextView and its installation on www.nextview.de or in the
manual on www.bmcm.de/man-nextview.
3b. Step: Measuring with API
In case you want to use the measurement device without NextView, you need to download and
install the free of charge programming interface LIBAD4. You can find this on www.bmcm.de/usb-
ad16f-en in the tab Downloads in the category LIBAD –Programming Interface (API), too. Find
more information on www.bmcm.de/libad-en or directly in the manual www.bmcm.de/man-libad.

USB-AD16f
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2Analog Inputs and Outputs
The 37-pin D-Sub female connector at the front of the device is
designed for the connection of the analog inputs and outputs.
The following table shows the pin assignment of the 37-pin D-
Sub connector:
Pin
Assignment
Pin
Assignment
1
AIn 1
11
AIn 11
2
AIn 2
12
AIn 12
3
AIn 3
13
AIn 13
4
AIn 4
14
AIn 14
5
AIn 5
15
AIn 15
6
AIn 6
16
AIn 16
7
AIn 7
17
n. c.
8
AIn 8
18
AOut 1
9
AIn 9
19
AOut 2
10
AIn 10
20..37
AGND
The max. potentials to ground must not exceed 12V. Any channel overload may influence
measurements of other channels and may lead to wrong values.
The internal connection of the 16 analog inputs is provided via a 40-way pin connector (see figure on the
right, here: current measurement at channel 2) on the USB-AD16f board, which, for example, can be used
to connect current shunts (ZU-CS250R available as accessory).
The following table shows the pin assignment of the 40-way pin connector:
Pin.
Assignment
Pin
Assignment
1
AIn 1
17
AIn 9
3
AIn 2
19
AIn 10
5
AIn 3
21
AIn 11
7
AIn 4
23
AIn 12
9
AIn 5
25
AIn 13
11
AIn 6
27
AIn 14
13
AIn 7
29
AIn 15
15
AIn 8
31
AIn 16
2, 4, .., 30, 32
AGND
33, 34, .., 39, 40
n. c.

USB-AD16f
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3Digital Inputs and Outputs
The USB-AD16f features 4 digital inputs and outputs each (low:
0V..0.7V; high: 3V..5V) and an isolated counter input. The 5V
auxiliary voltage at pin 6 can be used e.g., for sensor supply.
All connections are led to the 15-pin D-Sub female connector on
the back of the device. The pin assignment is as follows:
Pin
Assignment
Pin
Assignment
1
DOut 1
5, 13
DGND
9
DOut 2
6
VUSB (4-5V; max. 20mA)
2
DOut 3
7
counter input low
10
DOut 4
14
Counter input high
3
DIn 1
8, 15
n. c.
11
DIn 2
4
DIn 3
12
DIn 4
•The digital lines are protected by 1kresistors. If the input voltage is not within the permitted
voltage range of 0V..5V, the device may be damaged.
•The digital inputs and outputs are not galvanically isolated except for the counter.
•The digital ground (DGND) is connected with the PC ground.
4Interfacing Examples for the Digital Lines of the USB-AD16f
The following basic connection examples demonstrate the use of the digital inputs and outputs and the
connection of a counter to the USB-AD16f. The pin assignment of the 15-pin D-Sub female connector is
described in chapter 3.
4.1 Interfacing Examples for the
Counter Input
The galvanically isolated 16-bit counter is
connected at pin 7 and 14.
At maximum performance (216-1), the counter is
reset and starts from zero again.

USB-AD16f
Page 5
4.2 Interfacing Examples for Digital Inputs
The 3.9kpull-down resistor sets the input to low if no voltage is applied there.
4.2.1 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.
4.2.2 Connecting a Push-Button / Switch
Please make sure to use a push-button with
debounce protection, because otherwise several
pulses might be recorded.
The 3.9kpull-down resistor is absolutely necessary
to create a defined low signal!
4.2.3 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).

USB-AD16f
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4.3 Interfacing Examples for Digital Outputs
Serial resistors in the output lines limit the current and protect the hardware from being destroyed.
4.3.1 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 5).
4.3.2 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.
4.3.3 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.

USB-AD16f
Page 7
5Important Notes for Using the USB-AD16f
•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 or 15-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!
•The gain is adjusted to even values. Therefore, only 64000 values (for 16 bit) of the full range of the converter are
used. As a result, the measuring ranges are slightly larger (e.g. 10.24V) than the indicated measuring ranges so
that overranges can be recognized.
•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.

USB-AD16f
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6Technical Data
(typical at 20°C, after 5min., +5V supply)
•Analog Inputs
Channels // Meas. ranges*// Resolution:
16 inputs, electrically isolated from PC // 10V, 5V, 2V, 1V // 16 bit
Total sample rate**: // min. sample rate/cha:
250kHz // 4s
Converter error:
typ. 2 LSB
Accuracy***:
typ. 0,1%
Surge protection:
max. 35V (when turned on), max. 20V (when turned off), max. 20mA in total of all input channels!
Input resistance // Input capacity:
1M(with PC turned off: 1k) // 5pF
Zero shift // Gain drop:
typ. 36ppm/K // typ. 35ppm/K
Frequency accuracy:
max. 20ppm
* The MADDA16II modules are factory set in the range of 5V. The measuring range can be set for each channel separately.
** The total sampling rate is the sum of the sampling rates of all used channels (e.g., 5 channels à 10kHz => 50kHz total sampling rate).
*** Errors can add up in the worst case.
•Analog Outputs
Channels // Output range // Resolution:
2 outputs, electrically isolated from PC // 10V // 16 Bit
Temperature drift:
Offset typ. 25ppm/K / Amplification typ. 30ppm/K
Output current // Output resistance:
max. 1mA // <10
Relative accuracy:
1 LSB
•Digital Inputs/Outputs
Channels // Level:
4 input and 4 output channels // CMOS/TTL compatible (low: 0V..0.7V; high: 3V..5V)
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 1k, max. max. 20mA in total of all channels!
Counter:
1MHz, 16 bit, galvanically isolated, 5..12V input voltage
•General Data
Power supply:
+4.5V..+5.5V from USB connection to the PC, max. 100mA
Connections analog:
all channels at a 37-pin D-Sub female at the device front
Connections digital:
all channels at a 15-pin D-Sub female at the device back
LEDs:
device status is indicated by 4 LEDs at the device back
CE standards:
EN61000-6-1, EN61000-6-3, EN61010-1; for decl. of conformity (PDF) visit www.bmcm.de
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 // Relative humidity:
operating temp. 0..70°C, storage temp. –25..+85°C // 0-90% (not condensing)
Dimensions // Protection type:
167 x 113 x 30 mm3// IP30
Delivery:
device in aluminum housing, 1m USB connection cable
Available accessories (optional):
DIN rail set ZU-SCHI, current shunt ZU-CS250R, D-Sub plugs ZU37ST, ZU15ST, connecting cables ZUKA37SB,
ZUKA37SS, connector boards ZU37BB/CB/CO, waterproof housing ZU-PBOX-PG
Warranty:
2 years from date of purchase at bmcm, claims for damages resulting from improper use excluded
•Software
Software free of charge download:
LIBAD4 64bit SDK for programming on Windows® 10/11
trial version of the measuring software NextView®to test and operate the hardware
NextView®(optional):
professional software (versions: Professional, Lite) for the acquisition and analysis of measurement data on
Windows®10/11
Manufacturer: BMC Messsysteme GmbH. Subject to change due to technical improvements. Errors and printing errors excepted. Rev. 4.0 07.09.2023