Promax HD Ranger +, Руководство пользователя

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4-40 December 2014
4.3 Full Spectrum screen description
Figure 30.
Horizontal reference line
It indicates the signal level.
Vertical axis
It indicates the signal level.
Vertical reference line
It indicates the frequency.
SPAN
It is the frequency range displayed on the horizontal axis.
The current span value appears at the bottom right of the screen. To
change use the joystick (left, right) in span mode (SP) or change it by the
"span" option in the Tuning menu (
key).
Span values available are: Full (full band), 500 MHz, 200 MHz, 100 MHz,
50 MHz, 20 MHz and 10 MHz.
Reference Level
It is the power range represented on the vertical axis.
To change use the joystick (up, down; 5 dB steps).
This equipment has an option to activate the automatic adjustment of the
reference level, so it detects the optimal reference level for each situation.
This option can be enabled or disabled through the
PREFERENCES menu
and Measures tab.