How do I get my VM700T to measure DPDG on a non-standard composite signal?

How do I get my VM700T to measure DPDG on a non-standard composite signal?

In the DGDP tool, you can use the line select button to choose which line to check for the staircase portion of the composite signal on. If horizontal adjustment is also required, press the menu button to bring up the DGDP config menu, then touch the acquire button followed by the special position button. In this menu, you can re-arrange the measurement locations for the DGDP tool which allows the software to accommodate a staircase in an unusual location or with an unusual number of steps.