Home > Data Acquisition and Control > USB > USB Multifunction Data Acquisition
Analogue Inputs: 16Analogue Outputs: 2Digital Inputs: 16Digital Outputs: 16
14 in stock, immediate despatch
A versatile low-cost USB multifunction data acquisition and control device. Has flexible inputs which can be configured for any mix and analogue inputs, and digital inputs/outputs. HV version has ±10 Volt range on 4 input channels. FREE Data logging software and examples for use with most programming and DAQ packages available.
PCB Only OEM Version >>
Flexible I/OThe first 16 I/O lines (FIO and EIO ports) on the LabJack U3-LV can be individually configured as digital input, digital output, or analog input. In addition, up to 2 of these lines can be configured as timers, and up to 2 of these lines can be configured as counters. On the U3-HV, the first 4 flexible I/O are replaced with dedicated high-voltage analog inputs.The first 8 flexible I/O lines (FIO0-FIO7) appear on built-in screw terminals. The other 8 flexible I/O lines (EIO0-EIO7) are available on the DB15 connector. Analogue Inputs The LabJack U3 has up to 16 analogue inputs available on the flexible I/O lines. Single-ended measurements can be taken of any line compared to ground, or differential measurements can be taken of any line to any other line.
Analogue input resolution is 12-bits. The range of single-ended low-voltage analogue inputs on the U3-HV is typically 0-2.4 volts or 0-3.6 volts, and the range of differential analogue inputs is typically ±2.4 volts (pseudobipolar only). For valid measurements, the voltage on every analogue input pin, with respect to ground, must be within -0.3 to +3.6 volts.
On the U3-HV, the first 4 flexible I/O are replaced with dedicated high-voltage analogue inputs. The input range of these channels is ±10 volts or -10/+20 volts. The remaining 12 flexible I/O are still available as described above, so the U3-HV has 4 high-voltage analogue inputs and up to 12 low-voltage analogue inputs.
Command/response (software timed) analogue input reads typically take 0.6-4.0 ms depending on number of channels and communication configuration. Hardware timed input streaming has a maximum rate that varies with resolution from 2.5 ksamples/s at 12-bits to 50 ksamples/s at about 10-bits. Analogue Outputs The LabJack U3 has 2 analogue outputs (DAC0 and DAC1) that are available on the screw terminals. Each analogue output can be set to a voltage between 0 and 5 volts with 10-bits of resolution.The analogue outputs are updated in command/response mode, with a typical update time of 0.6-4.0 ms depending on communication configuration. The analogue outputs have filters with a 3 dB cutoff around 16 Hz, limiting the frequency of output waveforms to less than that. Digital I/O The LabJack U3 has up to 20 digital I/O channels. 16 are available from the flexible I/O lines, and 4 dedicated digital I/O (CIO0-CIO3) are available on the DB15 connector. Each digital line can be individually configured as input, output-high, or output-low. The digital I/O use 3.3 volt logic and are 5 volt tolerant.TimersUp to 2 flexible I/O lines can be configured as timers. The timers are very flexible, providing options such as PWM output, pulse timing, pulse counting, and quadrature input.CountersUp to 2 flexible I/O lines can be configured as 32-bit counters.I/O ProtectionAll I/O lines on the U3 are protected against minor overvoltages. The FIO lines can withstand continuous voltages of up to +/- 10 volts, while the EIO/CIO lines withstand continuous voltages of up to +/- 6 volts.
A Ready-to-run executable logs from 1-16 channels on a U3, U6, or UE9. Displays selected channels on a graph and writes data to file. Executable requires the LabVIEW 6.0 run time engine (which can coexist with other versions of the LVRTE).
For faster acquisitions use the ready-to-run executable which streams analog inputs from 1-16 channels on a U3, U6, or UE9. Displays selected channels on a graph and writes data to file. Executable requires the LabVIEW 6.0 run time engine (which can coexist with other versions of the LVRTE).
Supplied with LabVIEW VI's. These VIs make use of the native TCP capability of LabVIEW. They do not require any special LabJack drivers, and thus should work on any LabVIEW platform that supports TCP
If you know any language we probably support it. This includes C, C++, C#, Delphi, Java, LabVIEW, LabWindows/CVI, MATLAB, Python, and Visual Basic (VB6/VB.NET). Start on the UD Series Programming page.
The free Express version of DAQFactory works with the U12. DAQFactory allows non-programmers to make custom applications. It is easy to collect input data, convert to engineering units, display it, and log it to file, without any programming. Scripting is also supported so you can do advanced applications with control and automatic setting of outputs.
RealView is a Windows data logging and chart recorder application, which records and plots measured values from analogue hardware devices in real-time. Several curves can be plotted into a single chart. Several charts can be arranged on one or more pages if necessary. Plot options like pen width or pen colour can be altered to suit. Chart screen shots can be captured, charts printed with annotations and raw data can be exported to Excel.
More Information >>
ProfiLab Expert is a low cost graphical programming software package for data acquisition and control applications. No programing experience is needed, programs are written by connecting function blocks together with wires. Professional user panels can be designed with custom controls, and the whole program can be compiled into a stand-alone executable file, with no run-time penalties.
DAQFactory is a low cost data acquisition and control software for SCADA, Factory Automation, HMI and Test and Measurement applications. DAQFactory provides all the tools needed to acquire data, log it, share it on a network, display it on the screen, graph it, analyse it, and automate your project. DAQFactory can communicate with just about any serial or Ethernet device using Modbus RTU, ASCII or Modbus/ TCP. It also supports a wide variety of DAQ devices including LabJack USB devices and many other DAQ cards.
All U3 Downloads >>
Customers who bought this item also bought:
EI-1034 - Temperature Probe£49.00
EI-1050 - Digital Temperature/Humidity Probe£67.00
LabJack U3-HV-OEM - PCB-Ony OEM version of LabJack U3-HV£73.00
LJ-CB15 Screw Terminal Board£28.00
LJ-DIN LabJack DIN rail Mount Clip£4.99
LJTick-CurrentShunt - 2 Channel 4-20 mA current loop Signal Conditioner£39.00
LJTick-DAC - 14-bit Analogue Output Signal Conditioner£69.00
LJTick-Divider - 2 Channel Voltage Divider Signal Conditioner£22.00
LJTick-InAmp - 2 Channel Instrumentation Amplifier Signal Conditioner£55.00
LJTick-OutBuff - 2 Channel DAC Output Buffer£24.00
LJTick-RelayDriver- 2 Channel Relay Driver Signal Conditioner£12.00
PROFILAB-EXPERT - Graphical Data Acquisition Programming Package£99.00
PS12DC Power Switching Board£79.00
RB12 SSR Module Expansion Board£109.00
REALVIEW - Data Logging, Chart recorder Software£49.00