KAD/ADC/120 Full-bridge ADC (voltage excitation, 3 kHz b/w) - 12 channels at 12 ksps
The KAD/ADC/120 is used to condition and digitize up to twelve D/E analog channels.
At the heart of the KAD/ADC/120 is a hard-wired state-machine that over-samples all channels at a rate between 48 ksps and 96 ksps and digitally filters any noise above the user-programmable cutoff frequency.
This is achieved using cascaded, half-band, Finite-Impulse-Response (FIR) filters followed by an 8th order Butterworth IIR filter with a default cutoff point set at one quarter of the sampling frequency (fc = fs/4).
All signals are sampled simultaneously. Thus, when several channels are sampled at different sampling rates, at the start of an acquisition cycle all channels are aligned.
The KAD/ADC/120 is similar to the KAD/ADC/118 but does not support channel balancing. The KAD/ADC/120 is available with three different input ranges (±10V, ±1V, ±100mV). The input range must be specified when ordering.
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- TEC-NOT-016 - Power dissipation, an example
- TEC-NOT-019 - An introduction to digital filtering
- TEC-NOT-049 - Power estimation
- TEC-NOT-001 - Strain gages and ideal bridges
- Manual: DAS Studio 3 User Manual
- Environmental Qualifications Handbook
- KAM-500 Databook
- KSM-500 Databook
- Aerospace Instrumentation Brochure
- 12 full or ½-bridge, potentiometer or Differential-ended (D/E) input channels
- Simultaneous sampling 16-bit A/D for each channel
- High accuracy
- Programmable input range per channel
- Programmable excitation per group of three channels
- 8th order Butterworth filter with programmable cutoff frequency per channel
- Short to ground on any channel does not affect others
- Up to 12,000 samples per second per channel
- Up to 3 kHz bandwidth
- Bipolar excitation before instrumentation amplifier
- Strain gage signal conditioning and digitalization
- Differential voltage measurement
- Strain gage measurement
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