Make sure he is running on the shortest possible sampling interval, (7 seconds?), and with something like a 90-minute window. Also the vertical axis made zero at the bottom for both or at most 2dB negative on SNRM, and the top only fractionally above the maximum sensible. So giving maximum graphical sensitivity.
I found with anything less then a decline, disconnect, reconnect can fail to zero-spike and just look like a small change in margin and even quick-look no sync speed change, given the default sync speed scale.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
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Edited by RobertoS (Sun 28-Feb-16 23:31:27)