The default frequencies are selected by the Distance‑to‑PIM analyzer to optimize the distance resolution.

Dmax is the maximum horizontal distance that can be analyzed. The Stop Distance setting cannot exceed Dmax. If the cable is longer than Dmax, then Dmax needs to be improved by increasing the number of data points. Note that the data points can be set to either 128 points or 255 points. For best results, Data Points should always be set to the maximum number of steps available. You can choose 128 data points if measurement speed is critical.

When the DTP Parameters setup window is displayed, the DTP Aid menu is also displayed.

DTP Parameters can be set individually in the Distance and Setup menus or can conveniently be set in one location using the DTP Aid (DTP Parameters screen) from the Setup menu. The Up and Left arrow keys move the selection highlight up in the window. The Down and Right arrow keys move the selection highlight down in the window. The bottom selection is the Continue button.

When any parameter is highlighted, keying in a value and pressing the Enter key or a menu key completes the setting, and the selection highlight is incremented downward in the list. You can also press the Esc key to abort these settings and return to the Distance menu or the Setup menu, depending upon your starting point.

When numeric values are highlighted, the number keypad must be used to enter a value. An additional menu is displayed for distance, frequency, propagation velocity, or cable loss ((dB/ft or (dB/m). Press the appropriate units submenu key or press the Enter key to set the value. The selection highlight is incremented to the next parameter (below) in the DTP Parameters setup window.

Additional selection menus are displayed when the following parameter buttons are highlighted in the DTP Parameters window:

 

The last item in the DTP Parameters setup window is the Continue button. Select this button and press the Enter key to close the DTP Parameters setup window and continue with your measurement. The menu display returns to either the Distance menu or the Setup menu, depending upon your starting point.