Anritsu ML2430A operation manual Front Panel Controls, Operation

FRONT PANEL CONTROLS OPERATION

Graphic LCD with Backlight

The LCD display settings are configured in the System menus. The backlight can be turned on or off, or time delayed, as required to suit ambient conditions and battery drain. The backlight is controlled through the System menus when oper- ating from the internal battery.

Soft Keys

Soft keys select submenus, toggle selections, control cursor position, and allow data entry. A flashing cursor indicates when numbers can be entered using the numeric keypad. Refer to the following sections of this chapter for detailed in- formation on using the soft keys.

Numeric Keypad

Provides the means for entering numeric data in the appropriate menus as required for system configuration or calibration.

Power On /Off

Switches the power meter from STANDBY to ON, or ON to STANDBY. Note that whenever AC power is applied, the power meter defaults to the ON state. Subsequently, the instrument can be switched between the ON state and the STANDBY state using this front panel Power On /Off key.

When External or Internal (battery) DC power is first applied to the instrument (no AC present) the power meter defaults to the STANDBY state. It can then be switched to the ON state using the front panel Power On /Off key.

Clear Key

The clear (CLR) key performs various functions depending on when it is pressed. For example, when editing an entry in a menu, pressing the CLR key clears the digits. If in a menu screen, pressing the CLR key returns to the pre- vious menu level.

If the limits FAIL indicator HOLD audible alarm is sounding, pressing the CLR key stops the alarm. The FAIL indication is not affected by the clear key, and can only be cleared by turning fail hold off.

If the GPIB box is on the screen and the system is not in a menu screen, and the system is in local mode (menus available), and no GPIB operations are pending, then pressing the CLR key clears the GPIB box off the screen.

Menu Keys

When pressed, the first level submenus appear on the display directly above the soft key for that menu function. Refer to the following sections of this chapter for detailed information on using the menu keys.

Figure 4-1.ML2430A Series Front Panel Controls

4-2 ML2430A OM