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Rt USB3000 User Manual

Eight-channel adc with usb 2.0 interface
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1.
GENERAL INFORMATION .......................................................................................................................................2
2.
SPECIFICATIONS........................................................................................................................................................3
3.
OPERATING MODES..................................................................................................................................................7
3.1.
...........................................................................................................................................................7
3.2.
...........................................................................................................................................................7
3.3.
3.4.
3.5.
4.
SYNCHRONIZATION .................................................................................................................................................9
4.1.
4.2.
5.
CONNECTING THE DEVICE ..................................................................................................................................10
5.1.
5.2.
5.2.1.
5.2.2.
6.
SOFTWARE.................................................................................................................................................................17
6.1.
6.2.
Contacts:
http://www.RTechElectronics.com
Info@RTechElectronics.com
Sales@RTechElectronics.com
Support@RTechElectronics.com
RT USB3000
Technical Description and User Manual.
Revision 4.1.
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- Common questions
- Sales department
- Technical support

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  • Page 1: Table Of Contents

    RT USB3000 Technical Description and User Manual. Revision 4.1. GENERAL INFORMATION ............................2 SPECIFICATIONS................................3 OPERATING MODES..............................7 3.1. “ADC” ................................7 MODE 3.2. “DAC” ................................7 MODE 3.3. “L ” ............................8 OGIC NALYZER MODE 3.4. “ADC + DAC” ..............................8 MODE 3.5. “L + DAC”...

  • Page 2: General Information

    1. General information The RT USB3000 device is a compact multipurpose eight-channel ADC with USB 2.0 interface. The device additionally includes a two-channel DAC and digital inputs/outputs. The RT USB3000 device is designed for analog-to-digital conversion of signals with 0...1.5 MHz spectrum components.

  • Page 3: Specifications

    Number of outputs (TTL) Minimum high-level voltage (IO = -8 mA) 2.4 V Maximum low-level voltage (IO = -8 mA) 0.4 V General Parameters PC interface USB 2.0 RT USB3000 Technical Description and User Manual Rev. 4.1. 3 of 18...
  • Page 4 5% up to 90% Storage temperature from –10°С up to +70°С Figures below show typical characteristics of a RT USB3000 ADC device: Harmonic distortion; noise in the ½ f band; values spread from ADC with constant voltage on analog input; the graph of Crosstalk dependency towards channel switching frequency.
  • Page 5 Fig. 2. Harmonic distortion. Input signal - sine-wave 10 kHz, 5V. f = 3MHz. Fig. 3. Values spread from ADC with constant voltage (0V) on analog input. f 3MHz. RT USB3000 Technical Description and User Manual Rev. 4.1. 5 of 18...
  • Page 6 -100 Frequencies of channel switching, МHz Fig. 4. Crosstalk dependency towards channel switching frequency RT USB3000 Technical Description and User Manual Rev. 4.1. 6 of 18...

  • Page 7: Operating Modes

    3.2. “DAC” mode In the “DAC” mode RT USB3000 device provides the 2-channel output of analog signals with the DAC frequency up to 100 kHz and the channel switching frequency up to 100 kHz. It is possible to perform program adjustment of the values delivered to the DAC, with the use of calibration factors recorded in the ROM of the device at the stage of adjustment by the manufacturer.

  • Page 8: Logic Analyzer" Mode

    3.3. “Logic Analyzer” mode In the “Logic Analyzer” mode RT USB3000 device provides the input into a PC of digital signals from 10 input digital lines with the sampling frequency up to 6 MHz. The data enters into a PC in the form of double-byte words, their 10 least significant bits correspond to the logic state on 10 input digital lines of the device ("1"...

  • Page 9: Synchronization

    ADC_EXT pin of the analog ports of other RT USB3000 devices. Thus, ADC operating (scanning of digital inputs) on all the devices is strictly simultaneous. Switching between acquisition synchronization modes of data acquisition is software-selectable.

  • Page 10: Connecting The Device

    Power Supply Port Digital Port Digital Port - type DRB-37F. It is used for the connection of the digital signals to the RT USB3000 device. Power Supply Port — it is used for supplying power from an external supply included in the delivery set.

  • Page 11: Connecting The Device To The Pc For The First Time

    5.1. Connecting the device to the PC for the first time When the RT USB3000 device is connected to a Windows PC for the first time, it is necessary to specify the location of the device driver. Before connecting the device to the PC for the first time you should first insert the included CD into the CD-ROM drive of your PC and only then connect the device to the PC via a USB cable.
  • Page 12 In the Device Manager RT USB3000 will appear as Unknown device. You should right-click on it and select “Update Driver Software”: After this the Found New Hardware Wizard will start up: RT USB3000 Technical Description and User Manual Rev. 4.1.
  • Page 13 Afterwards, when the RT USB3000 device is connected to another USB port of the PC, Windows might once again detect the RT USB3000 device as “unknown device”. In this case you will have to repeat the driver installation procedure as described above.

  • Page 14: Connecting To The Object

    Allowable potential on the SYN input is 0… 3,5 V relative to the ground (contacts 9, 28). Acquisition synchronization. Allowable potential on the ADC_EXT input is 0… 5,5 V relative to the ground (contacts number 9, 28) RT USB3000 Technical Description and User Manual Rev. 4.1. 14 of 18...
  • Page 15 During the connection of the sources of analog signal to the RT USB3000 device it is necessary to keep to the following recommendations: Differential connection presupposes measuring voltage difference between the inverting and non-inverting inputs of the channel, i.e.

  • Page 16: Connecting To The Digital Port

    GND – digital ground + 5 В (digital supply) output + 5 В (digital supply) output + 3.3 В (digital supply) output + 3.3 В (digital supply) output Acquisition synchronization. RT USB3000 Technical Description and User Manual Rev. 4.1. 16 of 18...

  • Page 17: Software

    6. Software Software of the RT USB3000 device consists of the following components: QMLab software suite Software development kit (SDK package) 6.1. QMLab software suite The QMLab software suite is a universal software tool for working with QMBox devices. It allows performing most standard tasks within measurement automation.
  • Page 18 6.2. Software development kit Apart from the complete QMLab software suite, the RT USB3000 delivery set includes an SDK package, which is software and documentation designed for users who would like to create their own applications for working with the device. This software consists of function libraries (API) and examples of software development.

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