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(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 

Summary of Contents for AX-TI220

Page 1: ...AX TI220 OPERATION MANUAL...

Page 2: ...ere may be ground potential during measuring The body should be kept insulated from ground with dry insulating shoes insulating pads or insulating clothes When performing measurement with a test probe...

Page 3: ...mance reaching 1000V CAT III Explanation on Front Panel The front panel is shown as in Figure 2 1 explanation being as follows Figure 2 1 1 V Hz end It is the input end for all measurement functions e...

Page 4: ...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 measurem...

Page 5: ...easurement unit being or F of temperature or F or nF of Capacitance mAV Indicating the measurement unit being A mA of current or V and mV of voltage KHz Indicating the measurement unit being KHz and H...

Page 6: ...ng the range of excitation voltage when performing the insulation resistance measurement 15 TEST Indicating it is now in the insulation resistance measurement state 16 Indication to low voltage of the...

Page 7: ...sistance measurement state press the TEST key to start measuring and then press the TEST key again to stop measuring The measurement range of the insulation resistance is 50K 2G Maximum minimum value...

Page 8: ...y 0 50 Storage temperature 20 60 relative humidity 80 Altitude operation less than 2000m Storage less than 10000m Volume 200mm X 100mm X 40mm Weight 560g Range and Accuracy The below listed accuracies...

Page 9: ...0 8 4 102 V A 5000 A 1 A 0 8 4 50mA 10 A 0 8 4 1 5mV mA 500mA 0 1mA 0 8 4 Notes above accuracies can be guaranteed within 10 100 of the full range DC Current Range Resolution Accuracy Voltage Drop 500...

Page 10: ...nF 2 10 50 F 10nF 2 10 500 F 0 1 F 2 10 1000 F 1 F 3 10 Notes above accuracies for film capacitor or better can be guaranteed within the full range Diode Range Resolution Accuracy 2 5V 1mV 1 5 Notes t...

Page 11: ...1000V 400V 5000 A 1mA 500mA 100mA Notes Low voltage or low frequency would lower the accuracy Duty Ratio Frequency Range Duty Ratio Range Resolution Accuracy 5Hz 500KHz 5 95 0 01 0 02 Insulation Resis...

Page 12: ...in the batteries as the polarity specified on the shell of the meter Put the cover as its origin The meter must not be used until the cover of batteries being put properly and locked in Replacement o...

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