Lowrance HDS Gen2 Touch Operator's Manual page 116

Locking channels
You can lock selected SIRIUS channels from being broadcast unless
an unlock code is entered.
When the function is activated, a 4 digit code must be entered
before the locking is activated.
The same code must be entered before a locked channel can be
released.
Mixer
You can make adjustments to audio settings by tapping Mixer on
the audio options menu.
114 |
Audio | Lowrance HDS Gen2 Touch