4
(5) Rotary switch
Used for selecting measurement functions such AC voltage, DC voltage, millivolt,
frequency/temperature, diode/continue
、
resistance and capacitance, microampere current,
milliampere current, insulation resistance.
(6) POWER switch
Used for putting on or off the operating power for the meter.
(7) SELECT key
•
When setting the rotary switch to the position mV, uA, mA, press the SELECT key to select the DC
or AC mode.
•
When setting the rotary switch to the position Hz %
°
C, press the SELECT key to select plus
frequency, duty ratio or temperature mode.
•
When setting the rotary switch to the position Diode/Continuity, press the SELECT key to select
diode or continuity mode.
•
Pressing this key will be void during the other measurement.
•
If press down the SELECT key at the same time when turning on the power switch, the automatic
sleep mode will be canceled.
(8) MAX/MIN key
Press MAX/MIN key to enter the record state for the maximum and minimum value. By pressing this
key again it will display the minimum value, the maximum value, the average value and the current
value in cycles. When releasing the key after pressing it for two seconds, the maximum and
minimum record state will be exited.
(9) Hz/Duty key
•
During the Frequency/Duty measurements state, by pressing HZ/DUTY key the meter will shift the
frequency or duty measurement state.
•
During the AC voltage or AC current measurements, by pressing Hz/DUTY key the meter will enter
the linear frequency measurement state. At this time what being measured is the frequency of
voltage or current. By pressing this key again to exit the linear frequency measurement state.
(10) LIGHT key
By pressing this key for a time, the backlight of the LCD screen will be opened and after ten seconds
the meter will automatically turn off the backlight. It is also possible to turn off the backlight by
pressing the LIGHT key before the ten seconds.
(11) TEST key
During the insulation resistance measurement state, press the TEST key to start measuring,
and then press the TEST key again to stop measuring.
(12) RANGE key
•
During the temperature measurement state, press the RANGE key to select Celsius or Fahrenheit.
•
For various kinds of measurements it is used manually to select range. Under the automatic range
state (AUTO RANGE displaying), it will enter manual range state(MANUAL RANGE displaying) with
a press on RANGE, after that the range will be changed with a press on RANGE while the small digits
on the left lower corner indicating the actual range. When the RANGE key being released after
pressing for two seconds the meter will return back to the automatic state. When performing logic
frequency measurement and diode measurement pressing RANGE will be void. During the insulation
resistance measurement, the voltage range need to be selected by manual.
(13) BEEP key
When the short circuit is measured, press the BEEP key to select whether the buzzer sound.
(14) HOLD key
Used to maintain the measurement data unchanging, by pressing the key again it will resume the
measurement
Содержание AX-TI220
Страница 1: ...AX TI220 OPERATION MANUAL...
