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AC voltage and AC current are true effective values, which distinguishing this meter from the 
meters which only can measure the AC average value.  

 

Automatic and manual ranges: When turning on the meter’s power switch the meter defaults the 

automatic range state (AUTO displaying), and simultaneously it will automatically select the proper 
range according to the measured electric parameters. If OL being displayed under automatic range, 
it indicates the measured value exceeding the meter’s maximum range. Pressing the RANGE key 
under the automatic range the meter will enter the manual range(MANUAL displaying), then 
pressing the RANGE key again it will be possible to select the required range. The indicator for 
range will display the maximum value of this range. If OL displaying under the manual range,  
it indicates the measured value exceeding the selected range. Press the RANGE key under the 
manual range for two seconds and then release it, the meter will go back to the automatic range 
state. 

 

Linear frequency measurement: Pressing the Hz/Duty key when the meter performing 

measurements on AC voltage or current, it will be capable to measure the frequency of the AC 
component. However it has a certain requirements on the amplitude of the AC component. 

 

Logic impulse duty ratio measurement: logic impulse duty ratio refers to: (high level 

width/impulse cycle)×100% 

 

Diode measurement: during diode measurement the meter is indicating to the forward voltage 

drop of the diode 

 

Insulation resistance measurement: during insulation resistance 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 measurement: by pressing MAX/MIN keys the meter can enter the 

maximum/minimum value record state, and it will continuously update the maximum/minimum 
values based on the new measurement results. Pressing the MAX/MIN key can display the maximum 
value, the minimum value, the average value and the current value in cycles. After exiting the 
MAX/MIN measurement state the recorded maximum value/minimum values will disappear. 

 

Automatic shutdown and the continuous operating mode: after the meter being turned on,  

in case of stopping to pressing any key or stopping to turning the rotary switch for more than fifteen 

minutes, the meter will automatically shutdown. 

The meter will not automatically shutdown 

during the insulation resistance measurement.

As the meter will still consume a little energy after 

its automatic shutdown, so it is better to turn off the POWER switch if the meter remains idle for  
a long time. If you want the meter to operate continuously without automatically turning off, it can 
be done only just by pressing down the SELECT key at the same time when turning on the POWER 
switch. 

 

Low voltage detection: when the meter detecting the total voltage of the batteries lower than 

6.8V, the  

  symbol on the LCD screen will be lighted to prompt the batteries should be 

replaced. 

 

Chapter 4 Technological Specifications 

General Features 

 

Voltage between the measurement end and ground is of 1000V AC/DC. 1000V CAT Ⅲ, 2th pollution 

grade. 

 

5000 counts, automatic/manual range, basic sampling rate 2.5 t/s and 51 segment analog bar. 

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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