FS9922-DMM3

Rev. 1.1

13/35

10.4

SELECT Key

1)

SELECT Key is a function selection key that acts with trigger.

Press the key can choose the

needed measurement mode:

To choose DC or AC in DC/AC status, to choose ℃ or ℉ in

temperature measurement mode, to choose Diode or Buzzer in Diode/Buzzer status, to choose

Ohm, Cap, Diode or Buzzer in Ohm/Cap/Diode/ Buzzer status.

2)

Press the key then turn on the power, the Auto Power-off function will be cancelled, the signal

“APO”disappears in LCD, and enter into Sleep Status (Power-Off).

Press the key then power on

will have the Auto Power-Off function.

10.5

HZ/DUTY Key

Hz/Duty is the key to select Frequency/Duty Cycle and it acts with trigger. In Frequency Measurement

Mode, press the key can select Hz or Duty Measurement Mode; in AC/DC Voltage or AC/DC Current

Measurement Mode, press the key can select Voltage/Hz/Duty or Current/Hz/Duty Measurement Mode.

10.6

MAX/MIN DATA HOLD Key

1)

Press the MAX/MIN Key will enter into the MAX Mode, the measured max. value will be held;

press the key again will enter into the MIN Mode, the measured min. value will be held; press the

key again will repeat the a. m. circuit.

2)

It will enter into the Manual Measurement Mode after enter into the MAX or Min Mode, RELΔ,

HOLD, RANGE, SELECT Key function are not available under this mode.

3)

The measured MAX or MIN value will be saved automatically when enter into MAX or MIN

measurement mode.

4)

No analog section bar function when enter into MAX or MIN mode, and the Auto Power Off

function will be cancelled.

5)

Press the MAX/MIN Key longer than 2 sec. will exit from the MAX or MIN measurement mode.

11. Other Functions

The indication of function signals, units will show in LCD when each of the functions is used.

11.1

The time for Auto Power-Off is set to be 15 minutes:

1)

If the mode switch or keys of the meter is no action within 15 minutes, the system will power off

automatically (sleep mode). In Auto Power-off status, press the function key or enable the function

switch, the meter will “Auto Power-On” (Operation Mode).

2)

The signal “APO” of Auto Power-off will show at the same time after the normal power on.

The

buzzer will remind 5 times sequentially one minute before it is shut off.

It will enter into sleep

(Power-off) status after a long sound before it is shut off.

Enable the Mode Switch or press any

key can restart it under the Auto Power-off mode.

11.2

Alarm Condition

1)

Press the function key, the buzzer will sound “Be…” in short.

2)

One minute before Auto Power-off the buzzer will sound “BeBeBeBeBe” five times to warn.

Before it is shut off, the buzzer will sound a long ”Beee” then shut off.

3)

The buzzer will sound “BeBe…” continuously to warn when the measured DC voltage is higher

than 1000V,

4)

AC voltage is higher than 750V, or the measured DC/ACmV mode is higher than 400.0mV.

5)

The buzzer will sound long when the short circuit resistance is less than the rated value during a

short circuit test.