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Backlight Mode Select
Press the backlight, the LED will be on one second.
Press the backlight again to turn off.
Backlight turn on mode
Backlight turn off mode
Gain Manual Adju -
6.3.1
Short Press
Each time the uplink and downlink attenuation increases or decreases by 1db at the same time
(take increase 1db as an example)
Manual Attenuation
6.3.2
Long Press
Long press for more than 5s
UL&DL - 30 db at the same time
Continue to press and hold, the amplifier turns off