Section 2 | Operation |
|
|
2.1 Principles of Operation
The temperature indicator uses two ICs to digitize and display the analog input signal.
One IC performs the conversion of the analog input to the digital equivalent via 24 bit delta- sigma analog to digital converter. Battery voltage is also monitored by this IC and a thermistor supplies the reference junction correction signal.
The other IC receives input from the analog to digital converter, linearizes and drives the LCD display. Front panel buttons are also monitored.
7
