System operation modes

UM0756

10/28

Doc ID 16031 Rev 1

3

System operation modes

The system operates in various modes depending on user actions:

3.1

Normal mode

The system operates in normal mode in normal working conditions. In this mode, the user

can increase or decrease the volume level or channel number using the touch keys or the

rotary encoder.

The user can also see the water level by touching the corresponding key. Additionally, the

user can reset the various parameters to the default values by touching the restore key.

3.2

Brightness mode

In this mode, the user can increase or decrease the brightness of the LED display using the

touch keys or the rotary encoder. The brightness level of the display is indicated by the

number of glowing discrete LEDs.

If the system is in normal mode, the user can enter brightness mode by touching the

menu/brgh key.

The system exits brightness mode after 5 seconds, or if any key other than CH++/UP or CH-

-/DOWN is touched.

3.3

Demo mode

In this mode, the system continues demonstrating the various types of brightness variance

options possible with the STLED316S device.

The two different modes are:

●

Constant brightness of all the digits of the STLED316S

●

Variable brightness of all the digits of the STLED316S

The system exits the demo mode if any key is touched.

3.4

Standby mode

In this mode, the front panel is in low power mode and the power of the main host system is

switched off using the on-board relay.

As the front panel is in low power mode, neither any key nor the rotary encoder operates

when the system is in the standby mode.

The system can be put into standby mode by pressing the on-board STDBY switch. The

system comes out of standby on pressing the STDBY switch again. (For details refer to

Section 4.3.2)