To fully understand Smart Scan measurement mode results, you should be familiar with the Smart Scan bar or line graph and the viewing options available.

Arrow Keys

You can use the left and right arrows to move the marker. With each non-continuous key press, the marker increments or decrements to the next or previous channel in the smart scan. The values printed below the graph for the Frequency, Level, and Deviation correspond to the selected channel.
Use the up and down arrows to adjust the graph for best viewing of the signal level measurements. NOTE: Each arrow key press changes the reference setting by one (1) dB.

Softkeys

Four softkeys on the smart scan screen provide the following options:

FILE

Select Save... to save a completed test.

Select Open... to open an existing Smart Scan measurement file to view previously collected data. To select an item, use the arrow keys to choose the menu item you prefer and press ENTER to make your selection.

VIEW

Select Auto Reference to automatically view measurement results in the best reference setting on the bar graph (Keystroke shortcut: SHIFT 9). NOTE: For best reference setting results you may have to select the Auto Reference button more than once (up to three times).

Select 1, 2, 5, or 10 dB/div to adjust the vertical resolution of the graph for the best viewing.

Select Single Channel to view the level measurement screen for a single channel selected by the marker. (First, use the arrow keys to move the marker to the preferred channel. Then select this option from the VIEW menu.)

Select Full Scan to view the full scan measurement screen.

Select Tilt to view the Tilt measurement screen.

Select Pause to suspend measurement updates (Keystroke shortcut: SHIFT 8).

LIMITS
Select a set of measurement limits by using the arrow keys to highlight the limit set you prefer - Off, Cable Modem, Ground Block, Tap, or TV. Or select Edit to access the CONFIGURE MEASURE - LIMIT SETS configuration screen, where you can edit limit-set parameters to meet your needs. Use the arrow keys to choose the menu item you prefer and press ENTER to make your selection. NOTE: When you select Edit, the limit-set parameters you define will remain constant in all channel plans and measurement modes.

SETTINGS

Use the arrow keys to choose the menu item you prefer and press ENTER to make your selection.

Select Animation On to turn on the smart scan animation option. When animation is enabled, the mode will take the operator through a level screen and a type compensated screen before finally arriving at the final smart scan mode screen. These extra screens are designed to give the user a tutorial about how the smart scan works so the user can follow the steps the mode takes to go from a level measurement to a type compensated level measurement, and finally to a type and tilt compensated measurement, which is the deviation value.

Select Bar Graph to view the type compensated level graph and the smart scan graph as a bar chart (similar to the full scan mode) NOTE: The selected graph type does not change the values printed, but is simply offered as a means for users to customize their smart scan experience.

Select Line Graph to view the type compensated level graph and the smart scan graph as a filled line graph (similar to the sweep modes) NOTE: The selected graph type does not change the values printed, but is simply offered as a means for users to customize their smart scan experience.

Select Channel Plans to choose an alternate channel plan or to edit the configuration of the existing plan. Use the arrow keys to choose the menu item you prefer and press ENTER to make your selection. NOTE: If the current channel plan selected has no channels that can be included in the smart scan, an error dialog will pop up, showing the following prompt: There should be at least one channel in the channel plan.

Press OK and go to downstream channel plans to select a plan which has at least one channel, or to create a new channel plan.