ETAS ES5350.1, Руководство пользователя

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ES5350.1 - User’s Guide 23
ETAS Signals
3 Signals
This chapter features a description of the signals of the ES5350.1 plug-in card.
• "Analog Inputs - I/O interface X1_ANALOG_IO" on page 23
– "Block Diagram of Analog Inputs" on page 23
• "Analog Outputs - I/O interface X1_ANALOG_IO" on page 24
– "Block Diagram of Analog Outputs" on page 24
3.1 Analog Inputs - I/O interface X1_ANALOG_IO
The plug connector "X1_ANALOG_IO" features 10 analog inputs ANA_IN_0...
ANA_IN_9 that are differentially and galvanically isolated from each other. This
allows the measurement of different signals, even without common reference
point.
Every analog input channel has a mean filter with adjustable sample number (2,
4, 8, 16, 32, 64, 128) which is used for averaging. For this purpose, every input
channel can be operated in regular analog or comparator mode.
3.1.1 Block Diagram of Analog Inputs
Fig. 3-1 Block diagram of analog inputs of the ES5350.1 plug-in card
*
X represents the respective channel number (0...9)
For more detailed information about the analog inputs, see the Technical Data in
the chapter "Analog Inputs (I/O interface X1_ANALOG_IO)" on page 33.
Overvoltage
Protection
AD
Converter
Galvanic
Isolation
FPGA
ES
5300 Backplane
Bessel-
Lowpass-
Filter
25 kHz
3dB
Analog Input
(ANA_IN_X*_p)
Analog Ground
(ANA_IN_X*_n)