52
Opens 
This function measures the distance to a complete 
“open” on a pair based on a selected cable type. 
“Opens” is more accurate if other cable pairs are 
active. If other pairs are not active, short at least 
30% of the inactive pairs to the cable shield.
The TDR function should be used to determine 
distance to a “partial” open.
The 965DSP will first measure the “open” distance 
between green and black. Use the [Tab] key to move 
to the next lead configuration. 
Press the [Setup] key to change the Cable Type, or to 
select Capacitance. 
Press the [Up] or [Down] keys to move to the desired 
cable type. Press the [Enter] key to accept the choice 
and return to the main Opens screen.  Press the 
[Return] key to return without changing the cable type.