The KAD/LDC/101 is used for signal conditioning and digitized data acquisition from four LVDT or RVDT devices.
- Four independent LVDT/RDVT input channels
- Four independent excitation channels (400 Hz x 4, 2.5 kHz x 4, 5 kHz x 4,or 10 kHz x 4 3.5 Vrms)
- Accuracy 1.25%
- Supports ratiometric values from 0.2 to 0.8 for which conversion compensates for variations in excitation
- Short on any channel does not affect others
- 16-bit simultaneous sampling on each channel
- Up to 24 k sampler per second per channel
- Up to 6 k Bandwidth
- LVDT/RVDT sensors
- Compatible with LVDT sensors from Schaevitz
KAD/LDC/101 4 channel LVDT/RVDT-to-digital converter
The KAD/LDC/101 is used for signal conditioning and digitized data acquisition from four LVDT or RVDT devices. In addition to the measurement channels, the KAD/LDC/101 provides independent excitation for four channels. Each signal has independent signal conditioning and filtering. The KAD/LDC/101 can be used with external excitation sources (400 Hz to 20 kHz), or with the independent onboard excitation outputs, which are capable of driving up to 25 mA each.
At the heart of the KAD/LDC/101 is a hard-wired state machine that over-samples all channels at a rate between 96 ksps and 192 ksps and digitally filters any noise above the user-programmable cutoff frequency. This is achieved using cascaded, half-band, decimate by 2, 15 tap, Finite-Impulse-Response (FIR) filters with 32-bit coefficients followed by an 8th order Butterworth IIR filter with a default cutoff point set at 25% of the sampling frequency. All signals are sampled simultaneously. This means that even when several channels are sampled at different sampling rates, the sample at the start of the acquisition will always be synchronized. Care must be taken when monitoring aircraft control signals due to the low input impedance when powered off.
Aerospace Instrumentation Brochure
Modern aerospace instrumentation systems can be highly complex, and it can be difficult to know how to meet program needs. It’s not unusual for requirements to change during a campaign and cause significant delays, and data must be captured reliably no matter what – otherwise expensive additional flights will be needed or months of program data could be lost. Read our brochure to learn how you can reduce your risk with commercial off-the-shelf (COTS) solutions.