SC Series Instruction Manual - Model SC500 page 73
AC
/A
C-L
VDT Input Channel
11
Chapter 11
AC/AC-LVDT Input Channel
11.1 Features
The AC/AC-LVDT Input channel provides an AC excitation voltage to and accepts
AC signals from LVDT (Linear Variable Differential Transformer) transducers.
These signals are digitized, converted into engineering units, and placed into the
track, peak and valley data values of the channel. Setup and calibration of the
channel are made manually through the SETUP mode.
The analog-to-digital converter features adjustable digital, low-pass filtering, 12- to
18-bit resolution (depending on the filter setting) and has several different input
ranges. These many input ranges allow ±25,000 count resolution (at the slowest
filter setting) for a wide variety of LVDT outputs.
The AC/AC-LVDT Input channel is calibrated to the transducer by using known-
displacement calibration.
Two rear panel control inputs can be field-configured for such functions as remote
tare, disabling peak/valley detection and clearing the peak/valley values. A stan-
dard voltage or optional current digital-to-analog output is also provided.
NOTICE
To use a DC/DC LVDT with a the instrument, use a High-Level Input channel
instead of an AC/AC-LVDT Input channel.
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