SKF Multilog On-Line System IMx-M User Manual page 168

Protection
Protection Module Configuration with IMx-M Manager
2 - 148
Figure 2 - 112.
Setting the Alarm Levels.
For this example, once a radial shaft vibration channel has been configured, the
combined measurement can either be configured by pressing the OK button
and selecting the new measurement from the "Combined Measurements"
configuration branch, or by instead pressing the "Combined Meas 2 (Ch3/Ch4)"
button (see figure above). This will save the current channel settings, then
launch a new "Combined Measurement" dialogue.
Configuring an ASV Combined Measurement Channel
To complete the process of creating an absolute shaft vibration (ASV)
measurement, configure a new combined measurement (for this example
consisting of both channel 3 and channel 4).
Once the Combined Measurement dialogue is opened, set the Type to Absolute
Shaft Vibration and enter a name.
SKF Multilog On-Line System IMx-M
User Manual