Planar IT-081, Operating Manual

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To enter the channel number or frequency directly, use the alphanumeric keypad.
After you have set the frequency in MHz, press MENU/ENTER . After you pressed this key,
the selected channel will be placed in the middle of the screen. You can set the position of
spectrum scan screen by
◄ and ► keys after setting the Center value for F2 key.
In addition to general parameters, you can also edit the following parameters to
adjust this mode settings:
1. Hold level . Showing of an additional trace with minimum or maximum level
on the screen.
Off : No trace is shown;
Max : Trace with maximum level is shown;
Min : Trace with minimum level is shown.
2. Span . Setting of the frequency scanning range.
18/36/72 MHz : Available values of the scanning range.
3. Scan mode . Selecting of the scanning mode.
Quick : Quick scanning;
Precision : Slow scanning that ensures maximum accuracy of the level
measurements;
Single : Single scanning sweep. To start this sweep, press AUX key to open
the menu with additional set of functions, and then press F2/Run key.
If additional trace showing option is turned on ( Min or Max values are selected for
Hold level parameter), press AUX key to open the menu with additional set of functions,
and then press F4/Reset key.
4.3.4. Scan Measurement Mode
This mode displays the signal levels as a bar-graph. The screen view is presented in
figure 4.6:
Figure 4.6
The tuning frequency and the channel level value indicated by the marker are shown
under the level bar-graph. You can navigate the marker by means of ◄ and ► keys. You
can set the marker position directly by entering the channel number using the
alphanumeric keypad. After you have entered the number, press
MENU/ENTER .
In addition to general parameters, you can also set the following parameters to adjust
the mode configurations:
1. Hist. type . Selecting one of the Scan mode types.
2. Scan: Measuring of the channel level.
3. Tilt: Measuring of the tilt between the channels.
4. Limit: Measuring of the ripple of channel levels.
The screen view of
Tilt mode is presented in figure 4.7.
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