L-Card ADC Series User Manual
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Contents
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Chapter 1. General description.L-Card presents a data collection system E-502 on the basis of USB and Ethernet interfaces.E-502 – is a system developed by LLC "L-Card". It is made on the basis of high quality productionof the company, it provides its own technical support and maintenance.E-502 has the continuity of architecture with L-502: only the interface with the PC with thesame functionality as the L-502 is subjected to processing, except for the small functionaldifferences that will be discussed in this manual (s. 3.5, p. 29). The E-502 and L-502 software hasalso has continuity (common library functions of the upper software level of the PC, identical tothe software at the Blackfin level).The most important characteristics of E-502:• ADC: 16 bits, conversion frequency up to 2 MHz, with switching to 16 differential channels or 32channels with common ground. Subranges: ±10 V”, “±5 V”, “±2 V”, “±1 V”, ±0.5 V, ±0.2 V.• Modification E-502-…-…-D has DAC support: 16 bits, 2 channels, output ± 5 V, asynchronous orsynchronous mode with a conversion frequency of up to 1 MHz for each channel.• Digital input: up to 17 digital inputs of general purpose, asynchronous or synchronous data outputmode with a frequency of up to 2 million words per second.• Digital output: up to 16 digital outputs of general purpose, with separate control of the outputresolution of the high and low byte, asynchronous or synchronous data output mode with a frequencyof up to 1 million words per second.• Processor (modification E-502-P-…) Blackfin 530 MHz, SDRAM 32 MB, the JTAG connectorallows to activate ready "advanced" signal processing and control functions inside the E-502 orindependently to be engaged in low-level programming of these functions.• Galvanic isolation provides isolation of digital and analogous signal inputs/outputs to all computercircuits.• The system can consist of one or more E-502 modules, synchronized from each other, from an internalor external synchronization source with an ADC conversion frequency of up to 1.5 MHz.• Design version "I" (E-502-…-…-…- I) has an industrial temperature range and a lacquer seal.The E-502 notation system is given in fig. 1-1. |
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