ETAS ES930.1 User Manual page 62

ETAS
10.3.4.3 A/D Converter
A 14-bit A/D converter digitizes the output signal of the analog filter with the
sampling rate configured for the channel.
10.3.4.4 Digital Filter
In the configuration software, it is possible to select whether or with which dig-
ital filter type the output signal of the A/D converter is processed:
• Use of a CIC filter or
• Use of an IIR filter or
• Digital filter jumpered
NOTE
The digital filters of the six channels for the Current Sense PS n current mea-
surement receive the same settings during the configuration.
NOTE
The software configurable filter of a measuring channel (analog inputs [AI]
and current measurement channels [PS] of the Power Stages) is automati-
cally deactivated when the measurement channel is operated in the event
mode.
10.3.4.5 CIC Filter
The parameters of the CIC filter (Cascaded-Integrator-Comb filter) are auto-
matically set in the configuration software upon selecting the sampling rate.
10.3.4.6 IIR Filter
The IIR filter (Infinitive Impulse Response filter) is a 2nd order Bessel filter for
which the user is automatically provided a matching selection of limit frequen-
cies (0.4 Hz to 4 kHz) for the configuration depending on the sampling rate.
ES930.1 - User Guide
Half-bridges ("PS" Connection)
62