You can tune level measurements by frequency or channel. Frequency Tuning
measures signal levels at one specific frequency. Channel Tuning measures
the signal levels of carriers within a channel. In each tuning mode, level
measurements are continuously updated on the screen.
Frequency Tuning
When you select Frequency Tuning, the signal level is displayed on a bar
graph and as a numeric value. Use the alphanumeric keys to tune directly
to a frequency and press ENTER to complete your entry.
The arrow keys provide an alternate method to tune your meter. Use the
left and right arrow keys to increment or decrement the frequency by the
configured step size (See Measure Configuration). Use the up and down
arrow keys to adjust the bar graph for the best viewing, or press the
VIEW softkey, use the arrow keys to select Auto Reference,
and press ENTER to automatically view measurement results in the
best reference setting (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).
Channel Tuning
When you select Channel Tuning, signal level measurements are displayed
on a bar graph and as a numeric value for each carrier within the channel.
Relationships between carriers, such as the delta between video and audio
levels, are automatically calculated and displayed. Use the alphanumeric
keys to tune directly to a specific channel and press ENTER to
complete your entry.
The arrow keys provide an alternate method to tune your meter. Use the
left and right arrow keys to increment or decrement to the next or previous
channel as defined in the current channel plan. Use the up and down arrow
keys to adjust the bar graph for the best viewing, or press the VIEW
softkey, use the arrow keys to select Auto Reference, and press
ENTER to automatically view measurement results in the best reference
setting (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).
Softkeys
Four softkeys on the LEVEL screen provide the following options:
FILE
Save or print a completed test. You also can open an existing Level measurement
file to compare previously collected data. 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 5 dB/div or 10 dB/div to adjust the vertical resolution
of the graph for the best viewing.
Select DQI to view a time elapsed
view of level measurements.
Select MiniScan to view the MiniScan measurement screen.
Select Tilt to view the Tilt measurement screen.
Select Full Scan to view the Full Scan measurement screen.
Select Constellation to view the Constellation measurement screen.
Select Qam Ingress to view the Qam Ingress measurement screen.
Select Pause to suspend measurement updates (Keystroke shortcut:
SHIFT 8). Use the arrow keys to choose the menu item you prefer and press
ENTER to make your selection.
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. Press ENTER to make your selection.
NOTE: Limit checking is not available in Frequency Tuning mode.
SETTINGS
Select Channel Tuning to conduct level testing in channel tuning
mode. Select Frequency Tuning to conduct level testing in frequency
tuning mode. 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.