9
Home Use
CHAPTER 3
Operations and Management
NDS3552 is controlled and managed through the key board and LCD display.
LCD Display – It presents the selected menu screen and the parameter settings.
The backlight in the display is on when the power is applied.
LED – These lights indicate the working status
• Power: It lights on when the power supply is connected.
• Alarm: It lights on when the there is error, such as the signal source loss.
• Lock: It lights on when the signal source connected and goes off when the signal
lose.
Left/Right/Up/Down buttons – Use these buttons to turn the screen pages, shift
the target items by moving the triangle, or change the parameter settings in the
program mode.
