UM0756

Using the front panel board

Doc ID 16031 Rev 1

11/28

4

Using the front panel board

4.1

Touch keys

There are 8 different touch keys on the front panel for various operations. Whenever a key is

touched, a buzzer emits a beep and an LED blinks as an indication of the touch. The various

keys and their descriptions are provided in the sections that follow.

4.1.1

VOL++

When the system is in normal mode, the user can increase the volume by one unit by

touching the key labeled as VOL++. The volume continues to increase to its maximum value

if the user does not release the key (Figure 6).

Note:

The volume does not increase or roll back when it reaches its maximum value, which is 99.

4.1.2

VOL--

When the system is in normal mode, the user can decrease the volume by one unit by

touching the key labeled as VOL--. The volume continues to decrease to its minimum value

if the user does not release the key (Figure 6).

Note:

The volume does not decrease or roll back when it reaches its minimum value, which is 00.

Figure 6.

Volume level on the LED display

4.1.3

CH++/UP

When the system is in normal mode, on touching this key the channel number is increased

by one unit. The channel number continues to increase to its maximum value if the user

does not release the key.

When the system is in brightness mode, on touching this key the brightness of the display is

increased by one unit. The brightness continues to increase to its maximum value if the user

does not release the key (Figure 7).