E20-10 High-speed external input/output module with USB 2.0 interface

High-speed external input/output module with USB 2.0 interface
  • ADC: 14 bits / up to 10 MHz
  • Input channels: 4
  • Variety of synchronization modes
  • Digital input/output: 16/16
  • 2 channels DAC (optional)

Relatively inexpensive and easy-to-use high-speed 4-channel ADC module.

USB 2.0 interface and internal 8 Mbyte FIFO buffer provide high-speed continuous data acquisition at frequencies up to 10 MHz. The FPGA-based architecture with one ADC, a switch and input buffer amplifiers in serially interrogated channels completely eliminates switching interference; active low-pass filters improve the signal-to-noise ratio of each channel.

The advanced synchronization system with configurable ADC synchronization lines and the data acquisition start signal from external or internal sources allows to realize the internal and external synchronization and to екфтыьше the internal synchronization signals outward. This allows to create single- and multi-module systems that are synchronous relative to one of the modules or to an external synchronization source.

Number of channels 4
Resolution 14 bits
Input signal measuring ranges ±3,0 V; ±1,0 V; ±0,3 V
(independent setting for each channel)
Type of analog inputs "With common ground", shielded
Input resistance of analog input 10 MOhm
Maximum conversion frequency 10 MHz
The bandwidth of each channel's transmission 0 Hz...1,2 MHz - fixed 2 (for the version E20-10-1 the band is 0 Hz...5 MHz for each channel)
Typical signal-to-noise ratio of each channel 73 dB
Inter-channel interference, not more than:
- at constant voltage
- at frequency of 1 kHz
- at frequency of 1 MHz
–70 dB
–75 dB
–65 dB
FIFO data buffer 8 MB
Sync Modes Conversion frequencies of ADC, start of data acquisition (by digital and analog signals)
Additional features The acquisition of the specified number of frames from the synchro-signal, the delayed start by a predetermined number of frames, etc.
DAC (option)
Number of voltage outputs with common ground 2
Resolution 12 bits
Setting time 8 μs
Output range ± 5 V
Output current, no more than 2 mA
DAC type Asynchronous
Digital inputs, outputs and synchronization lines
Number of inputs 16 (parallel, asynchronous, one of them can be configured for a bi-directional line of "ADC start synchronization")
Number of outputs 16 (parallel, asynchronous, with a common output resolution)
Bi-directional line "ADC frequency synchronization" 1
Synchronization start modes for data acquisition or ADC startup For each of the 2 bi-directional lines "ADC start synchronization" and "ADC frequency synchronization", the synchronization mode can be"internal", "internal with translation to output" or "external"
Type of logic TTL 5 V
Power supply
External source3

+8,0 V ... +40 V (revision B01)

Power consumption

 4,5 W

External power supply ± 12 V (up to 35 mA) - output to analog signals connector,
+5 V (up to 35 mA) - output to the digital signals connector
Dimensions  140x110x35 mm (excluding connectors)

1The characteristics are given for E20-10 revision B01, which is currently produced. Revisions A and B are withdrawn from production. For the differences between revisions A, B and B.01 — see User's Guide.
2LPF can be tuned to other cutoff frequencies - from 100 kHz to 5 MHz (with sufficient volume of the order).
3The AC adapter ~ 220V / = 12V is included in the delivery.

The description of signals is given in Manual. Also use the connection examples.

  • E20-10
    E20-10 module, DAC is absent
  • E20-10-1
    E20-10 module, 5 MHz bandwidth, DAC is absent
  • E20-10-D
    E20-10 module, 2-channel DAC is installed
  • E20-10-D-1
    E20-10 module, 5 MHz bandwidth , 2-channel DAC is installed


LGraph2 software package

  • lgraph2.zip (filesize: 24 391 141 bytes, date: 24.04.2019)

    LGraph2 is a free multi-channel data recorder for Windows. Version 2.35.00 provides the possibility of simultaneous data visualization and recording from the ADCs: L-502, L-780M, L-783, L-791, E-502, E14-140, E14-140M, E14-440, E-154, E20-10, LTR11, LTR114, LTR27, LTR212, LTR216, LTR22, LTR24, LTR25, LTR51. It requires an updated version of the LComp driver (from version 01.04.2010) and ltrserver (no lower than

Software for Windows

  • lusbapi34.exe (filesize: 2 450 812 bytes, date: 09.02.2012)

    Lusbapi Library v.3.4 for Windows 98/Me/2000/XP/Vista/7. Self-extracting archive with the software for the following L-CARD USB devices:

    • E14-140 module (Rev. "A" and "B")
    • E14-440 module
    • E20-10 module (Rev. "A" and "B")
    • E-154 module

    The archive includes USB driver, library, and examples.

    Attention!!! This version of the library uses a new USB driver. Thus, when upgrading from older versions of Lusbapi to version 3.2 or higher, the end user should switch the USB module to work with the new driver via the "Device Manager".

  • lcomp.exe (filesize: 6 498 080 bytes, date: 20.03.2019)

    Beta version. LCOMP library for Windows XP/Vista/Win7/Win8/Win10 32 and 64-bit versions with drivers. The installer and drivers are digitally signed. The library is built on the basis of modern WDM-drivers rewritten on WDF. It includes the WDM driver itself for L-CARD hardware, the DLL library with source code, programming examples, electronic description, etc. The LCOMP library provides support for almost the entire range of products: PCI boards, USB modules. ISA support is excluded.

    The library includes “L-Graph I” software. L-Graph I supports the following devices: L-1450, L-761, L-780, L-783, L-791, E14-140, E-154 and E14-440. Files recorded by L-Graph I can also be read and processed using the demo-version of PowerGraph v.3.X.


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Fax: +7 (495) 785-95-14

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Technical support: en@lcard.ru

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Moscow 117105
Russian Federation

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