L-Card L-502-P-G-D-I, Руководство пользователя

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4 General description.
Contents
CHAPTER 1. GENERAL DESCRIPTION................................................................... 7
1.1. Order information............................................................................................................... 8
1.1.1. Order kit .............................................................................................................................. 8
1.2. Consumer properties of L-502 in comparison with L-
780(М), L
-
783(М), L
-791 .... 8
1.3. Appearance and main structural elements ................................................................... 11
1.4. Documentation structure for L-502 ............................................................................... 13
CHAPTER 2. INSTALLATION AND CONFIGURATION. ....................................... 14
2.1. Configuration L-502. ........................................................................................................ 14
2.1.1. Backup boot configuration .............................................................................................. 14
2.1.2. The configuration of the outputs DAC1 and DAC2 ...................................................... 15
2.1.3. Configuring the resolution of the active state of the digital outputs ............................. 15
2.2. Installing the L-502 in your computer ........................................................................... 16
2.3. Function of the status LED on the front panel. ............................................................ 16
2.4. Serial number. L-502 version number. Module identification in a multi-module
configuration .......................................................................................................................................... 17
2.5. Software installation ......................................................................................................... 18
CHAPTER 3. THE DEVICE AND PRINCIPLE OF OPERATION L-502. ................ 19
3.1. Conventions ........................................................................................................................ 19
3.1.1. Convention on numbering ............................................................................................... 19
3.1.2. The assumption on the concept of "frequency" ............................................................. 19
3.1.3. The agreement on the terms "card", "board" and "module" .......................................... 19
3.2. Introduction (L-502 concept) .......................................................................................... 19
3.3. Operation principle ........................................................................................................... 22
3.3.1. Reference frequency ........................................................................................................ 22
3.3.2. ADC channel. ................................................................................................................... 22
3.3.3. Digital input channel. ....................................................................................................... 23
3.3.4. Digital output and DAC channels ................................................................................... 23
3.3.5. General principle for synchronization in L-502. ............................................................ 24
3.3.6. Setting the ratio between the time of setting the signal and the resolution for each
channel of the ADC is a unique possibility of the L-502! .................................................................... 26
3.3.7. Relative switching delays in ADC channels. ................................................................. 28
3.3.8. Relative delays of the ADC, DAC and I/O channels. .................................................... 29