Cambridge Audio A-BUS Table-Top Keypad Incognito BK10 - Manual (Page 14)

OPERATING INSTRUCTIONS
Volume adjustment
Volume is adjusted using the volume up and volume down buttons on the
keypad or remote; this is indicated on the keypad by the intensity of the blue
LED lights, there are four levels of intensity per LED.
Source selection
The Source left and right buttons allow you to choose from multiple connected
sources. The LED display will indicate which source is selected.
Sound adjustment modes
Pressing the Power/Standby button while holding the Volume down key
activates the sound adjustment modes, the four central LEDs on the keypad
will then light in sequence to indicate each of the four sound adjustment
modes in turn; Bass, Treble, Balance and Fader. These modes can also be
activated using the 'Select' button on the remote control.
After holding both buttons down for a short period, the second LED on the
keypad will light indicating that Bass adjust mode has been activated. In this
mode pressing the Volume up/down keys will adjust the Bass (low frequencies)
level.
Continuing to hold both keys down will light the third LED indicating that Treble
adjust mode has been activated. In this mode pressing the Volume up/down
keys will adjust the Treble (high frequencies) level.
14 Incognito table-top keypad