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Everest XCR - Product manual | Wiring and Connections
INGENIA | 2020-10-01 00:04:38 70
9.7.2. Analog Input Interface
The Everest XCR has a high accuracy fully differential 16-bit analog input AN1. See the specifications next:
Specification Value
Type of input Differential
ESD protected
ESD capability IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
Input voltage range ±10 V differential (AN1+ - AN1-)
Analog input resolution 16 bits, 0.305 mV / ADC coun
(Theoretical values: +10 V → 65535 counts, -10 V → 0 counts)
Accuracy ±0.05% from -9.8 V to + 9.8 V. 0.5% full range
Maximum absolute voltage on any pin (AN1+
or AN1-) ±15 V
1st order filter cutting frequency (-3 dB) 10 kHz
Input impedance 5 k Ω typ
Next figure shows how to connect the analog input. Note that for single-ended inputs it is recommended to connect
the negative AN1- to GND_D.
Also, for long distances, twisted pair, shielded cables are preferred. Connecting the shield to GND will improve the
signal to noise ratio.
However, take precautions not to connect the shield to PE as this could actually increase the
noise of the signals.