ETAS
Hardware Description
ES441.1 - User Guide
21
Configurable Hysteresis
The hysteresis and the corresponding values for the LOW and HIGH levels can
be configured independently of one another in the calibration software (see
Fig. 4
Fig. 4
-
4
Definition of the Hysteresis for the Input Channel
They can be configured separately in a range of -50 V to +50 V for every input
channel of the ES441.1. The minimum resolution of the switching thresholds is
0.1 V. The hysteresis is defined completely by both levels and the edge direc
-
tion.
The configurable hysteresis results in noise suppression. This feature facili
-
tates application in environments with noise interference and/or noise signals.
The quality of signal interpretation is improved considerably.
Galvanic Isolation
The measurement channels are galvanically isolated from each other and from
the power supply.
Interfering Voltage Filter
In the input stage, an interfering voltage filter frees the input signal of short
interfering pulses. The filter characteristics (duration) can be configured in the
calibration software. The interfering voltage filter can be disabled if necessary.
Inverter
The input signal of every channel of the ES441.1 can be inverted independently
of the other channels if necessary. Selection takes place in the calibration soft
-
ware.
Signal Acquisition and Signal Processing
In this function group, the input signal is sampled and processed in accordance
with the measuring capability selected in the calibration software. Measuring
capabilities can be selected independently of one another for the measurement
channels of the ES441.1.
The measuring capabilities of the ES441.1 are described in chapter 5
on page 32.
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