To configure the Smart Scan measurement feature:
- select the channel plan to be tested,
- select up to 999 channels, and
- the vertical resolution of the Smart Scan graph for the best viewing.
To configure your meter for Smart Scan measurement:
NOTE: Smart Scan measurement channels are user-defined and correspond
to the active channel plan. It is recommended that the channel plan be
accurate and that all channels that are actually being transmitted on the
system are enabled in the channel plan. Smart Scan mode may not be able to
calculate an accurate deviation or tilt value in sparsely populated channel
plans unless such plans contain evenly spaced enabled channels at both the low and high
ends of the spectrum. In order to obtain reasonable results, the selected
channel plan should contain at least 3 channels of each type of channel
included in the channel plan. For example, if the active channel plan contains
channels of type TV and QAM 256, it is recommended that you have at least
3 TV and 3 QAM 256 channels enabled in the channel plan. However, the accuracy
of the deviation and tilt measurement will increase as the number of
enabled channels increases, so it is generally a bad idea to deliberately
disable any channel in the channel plan that is actually being transmitted
within the system.
NOTE: The Smart Scan mode will automatically correct for situations where a
channel is incorrectly configured in the channel plan provided that the majority of the
channels in the channel plan are correct. Also, the Smart Scan mode will
automatically correct for channels that are enabled in the channel plan that
are not actually being transmitted.
To select the channel plan to be tested:
1) Press the SETTINGS softkey, use the arrow keys to select Channel
Plans.
2) Press ENTER.
3) On the SELECT A DOWNSTREAM PLAN screen, use the arrow keys to highlight
the correct plan for the network you are currently servicing
4) Press ENTER or the DONE softkey.
The name of the plan you have chosen will be displayed on the right-hand
side of the title bar at the top of all subsequent screens.
To select the channels for Smart Scan measurement: (As noted above, the best option
is to enable all channels that are currently transmitted in the system.)
1) Press the SETTINGS softkey.
2) Use the arrow keys to select Channel Plans.
3) Press ENTER.
The SELECT A DOWNSTREAM PLAN screen is displayed.
4) Press the PLAN softkey on the SELECT A DOWNSTREAM PLAN screen.
5) Use the arrow keys to highlight Enabled Channels on the pop-up
menu and press ENTER.
6) On the ENABLE/DISABLE CHANNELS screen, use the arrow keys to highlight
the channel you intend to edit and press the ENABLE softkey to
enable or disable (depending on its prior status) that channel.
7) Repeat the process for other channels as necessary.
8) On the ENABLE/DISABLE CHANNELS screen, Press Done.
9) On the SELECT A DOWNSTREAM PLAN screen, Press Done.
To adjust the vertical resolution of the Smart Scan graph for the best
viewing:
1) Press the VIEW softkey and use the arrow keys to choose 1,
2, 5 or 10 dB/div and press ENTER.