Spectrum Controls 1769sc-IF8u - Manual (Page 17)

Chapter 1: Module Overview 7
Module Field Module Field Module Field Module Field Module Field
C a l i b r a t i o n C a l i b r a t i o n C a l i b r a t i o n C a l i b r a t i o n C a l i b r a t i o n
The module provides autocalibration, which compensates for offset and
gain drift of the A/D converter caused by a temperature change within the
module. An internal, high-precision, low drift voltage and system ground
reference is used for this purpose. The input module performs
autocalibration when a channel is initially enabled. In addition, you can
program the module to perform a calibration cycle once every 5 minutes.
See Selecting Enable/Disable Cyclic Calibration (Configuration Word 0,
Bit 14) in chapter 4 for information on configuring the module to perform
periodic autocalibration.