L-Card E20-10, Руководство пользователя

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E20-10 User Manual
Contents
1. What this document is about ................................................................................................................ 6
1.1. On revisions
А
, B and
В.01
of module E20-10 ........................................................................... 6
1.2. Designation system....................................................................................................................... 7
1.3. Design versions............................................................................................................................. 7
1.4. How to read this manual?............................................................................................................. 8
2. Primary application properties ............................................................................................................. 9
2.1. Complete list of user differe
nces of revisions А, В and B.01 for
E20-10 module ................ 11
3. General description ............................................................................................................................. 14
3.1. Device application ...................................................................................................................... 14
3.2. Appearance ................................................................................................................................. 14
3.3. Module configuration ................................................................................................................. 16
3.3.1. Standard supply package ................................................................................................... 16
3.3.2. Design versions .................................................................................................................. 16
3.3.3. Software delivery ............................................................................................................... 17
3.3.3.1. Operational software ...................................................................................................... 17
3.3.3.2. Library Lusbapi .............................................................................................................. 17
3.3.3.3. LComp library ................................................................................................................ 17
3.3.3.4. Optional software ........................................................................................................... 18
3.3.4. FPGA firmware versions ................................................................................................... 18
4. Installation and customization ........................................................................................................... 20
4.1. Module connecting to computer ................................................................................................ 20
4.2. USB drivers installation ............................................................................................................. 20
4.2.1. USB drivers installation from Lusbapi ............................................................................. 20
4.2.2. USB drivers installation from LComp .............................................................................. 20
4.3. Recognition of the module ......................................................................................................... 21
4.4. Differences in USB driver of Lusbapi library .......................................................................... 22
5. Overview of the hardware components and operation principles ................................................... 25
5.1. Block diagram ............................................................................................................................. 25
5.2. E20-10 operating principle. ....................................................................................................... 28
5.2.1. Channel sampling principle ............................................................................................... 29
5.2.2. Synchronization in E20-10 ................................................................................................ 30
5.2.2.1. Synchronization modes.................................................................................................. 32
5.2.3. Data format of E20-10 ....................................................................................................... 37
5.2.3.1. Coding of word size overloading sign E20-10
or revision А
..................................... 37
5.2.3.2. Coding of data continuous area start in E20-10 of revision B .................................... 37
5.2.4. FIFO buffer and its overloading elimination logic .......................................................... 38
5.2.5. Readings adjustment (calibration) .................................................................................... 38
5.2.6. ADC word size overflow warning .................................................................................... 38
5.2.7. DAC optional ..................................................................................................................... 39
6. Connection of signals ......................................................................................................................... 40
6.1. General Information ................................................................................................................... 40
6.2. External connectors .................................................................................................................... 40
6.3. Analog signal connectors ............................................................................................................. 1
6.3.1. Digital signal and external power connectors .................................................................. 43
6.4. Characteristics of signal line inputs and outputs ...................................................................... 45
6.4.1. Operating mode .................................................................................................................. 45
6.4.2. Power-off mode .................................................................................................................. 46