Net research NetProbe 2000 User Manual page 257

Start by setting the default configuration on both devices.
We want the right side device to be a master, so increase
Priority 1 (lower value means higher priority).
Press the start button to run master/slave emulation.
Both devices are now in the Listening state. Best Master
Clock Algorithm compares clock quality of all devices
capable to be a master. The device with highest quality
clock will become a master.
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