FS9952_LP1

Rev. 2.0

15/31

13. Other Functions

13.1

Auto Power Off

In the process of measuring, no matter the function key or switch, if there is no any action on

them within 15 minutes, the meter will be )Auto Power Off) (Sleep Mode) to save the power. To

cancel the auto power off function, it is simply to press and hold the Manual Hold key to turn

the system on, and then the auto power off function will be cancelled.

In auto power off status to press the function keys or switches, the meter will be )Auto Power

On) (Operating Mode).

Note: In AC mode (MEAS: 11110) and auto power off, DC mode (MEAS: 11111) cannot

be waked up singly.

In sleep mode, the auto function will be cancelled if pressing Manual Hold key to

turn the system on.

13.2

Buzzer

When press any key or turn any function switch, the buzzer will raise one )beep) sound

(approx. 0.25 second 〜1 second). When measuring AC Voltage>750V, DC Voltage>1000V,

AC/DC mA Current>2000uA, AC/DC μA Current>200.0mA, AC/DC Large Current>10A, the

buzzer will keep sounding as the overload warning. Approximate 1 minute before the system is

auto power off, the buzzer will raise constantly 5 sounds to warning. Before the system is

power off, the buzzer will raise 1 long sound to warning.

13.3

SELECTC1 (Not connected is )1); Connect to VSS is )0).)

If set SELECT1 to )1), the power on default status is AC or ℉; if set it to )0), the power on

default status is DC or ℉.

13.4

Backlight

The system has the backlight driver output to control the on and off of the backlight circuit. It

provides the convenience to read in a dim light and worse vision. If press the BLCTR (S7) key

over approx. 2 seconds, the backlight will be on to drive the backlight circuit, and to press the

key again, the backlight will be off. After backlight is on, if no press on the key, it will be auto off

in 15 seconds.