3M 965AMS User Manual

Filter
1.  The Filter is used to reduce 

external noise from the 

trace.

Velocity of Propagation
1.  The velocity of propagation is a measure of how fast a pulse 

travels in a circuit.

2.  To get the most accurate distance measurement the VP 

should be set to the value for the cable type and gauge you 

are testing.

3.  If you do not know the VP, 

we recommend you use the 

TDR Setup menu. In this 

menu, you will select the 

type of wire you are testing 

and the tester will choose 

the VP.