VBOX III User Guide
Page 15 of 30
15/07/2011
Analogue inputs (continued)
Using the VBOX.EXE software, logging of the analogue channel data can be
switched on or off. It is also possible to change the name of each input
channel and configure scale and offset values for calibration of sensors. A
scale value of 1 and offset of 0 correspond to a channel reading in Volts DC.
This means that the value stored on the compact flash card for the channel
will also be in volts. When using a sensor such as, for example a load cell, it
may be desirable to store a reading in Kg. In this case, changing the scale
and offset to suit the sensor data sheet allows the data stored onto the
compact flash to be in Kg. When changing settings for an analogue channel
using the VBOX.EXE software, a live data view of the current channel is
shown. The value shown is the value after scale and offset is applied and can
therefore be used to aid sensor calibration.