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SC Series Instruction Manual page 97
High-Level Input Channel12
Chapter 12
High-Level Input Channel
12.1 Features
The High-Level Input channel provides a DC supply voltage to and accepts volt-
age or current signals from amplified transducers such as pressure transducers,
load cells and DC-DC LVDTs. These signals are digitized, converted into engi-
neering units, and placed into the track, peak and valley data values of the chan-
nel. Setup and calibration of the channel is made manually through the SETUP
menu mode. Signature Calibration is not available with amplified transducers.
The analog-to-digital converter input circuit features adjustable digital, low-pass
filtering, 12- to 18-bit resolution (depending on the filter setting) and has several
different input ranges. These many ranges allow ±50,000 count resolution (at the
slowest filter setting) across a wide variety of input ranges.
A combination of SETUP menu items and hardware jumpers are used to config-
ure the excitation supply output voltage (+28 VDC, ±15 VDC, +15 VDC or +12
VDC), the input type (voltage or current) and input reference (differential or single
ended).
Two methods of calibrating the High-Level Input channel to the transducer are
available: known-load calibration and shunt calibration. The benefits of each are
discussed in “
CALIBRATION TYPE
Menu Item” on page 113.
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 volt-
age or current digital-to-analog output is also provided.