Lna - Low Noise Amplifier; Reference Level Change - Arcom Digital Quiver XT User Manual

Select Max Frequency
LNA – low noise amplifier
The analyzer has 20dB LNA that can be turned on
when watching very low signals. Note: this is very
easy to overload the input when the LNA is turned
ON. Use it only when you are sure the unit is not
overloaded by additional gain. To turn the LNA on
press key 3 on the numerical keypad or highlight
this menu item with the vertical cursor keys then
press <Enter> to open the On/Off submenu:
In the submenu, highlight required On or Off
state with the vertical cursor keys and confirm
selection with <Enter> button. The scale is
automatically corrected to actual input gain.
Always make sure the LNA is Off when watching
normal level signals.

Reference level change

The reference level can be changed to view signal details especially when the scale
of 5dB/div is used. The screen can show only five menu items at a time, so to access
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