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2.3.

 

Keypad 

2.3.1.

 

SELECT 

 

1)

 

When the meter is turned off and the rotary switch is not in position of OFF, press 

SELECT

 key 

for 2 seconds to turn on the meter and press the key once more >2 sec. To turn the power OFF. 
2)

 

At 

EF/VOLT

 position 

Switches between Auto scan mode, AC and DC voltage, Non-contact electric field detector  
(EF mode) 

3)

 

At 

position 

Switches between Auto scan mode, Resistance measurement, Continuity checz, Diode Test and 
Capacitance measurement. 
4)

 

At 

A mA 

µ

A

 position 

Switches between Auto scan mode, DC and AC current. 
5)

 

Power-up Option 

Disables automatic power-off feature 

2.3.2.

 

RANGE 

At ACV, DCV, 

,  , A,mA and 

µ

1)

 

Press RANGE to enter the manual ranging mode. 

2)

 

Pres RANGE to step through the ranges available for the selected function. 

3)

 

Press and hold RANGE for 2 seconds to return to autoranging. 

2.3.3.

 

HOLD 

Press it to enter the Data Hold mode. Used to maintain the measurement data unchanging,  
by pressing the key again it will exit the Data Hold mode. Pressing this key and last for 2 seconds,  
the meter will delay for 6 seconds, than enters HOLD mode. 

2.3.4.

 

~

Hz 

During the voltage or current measurement, by pressing 

~

Hz 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 it will return the voltage or current measurement state. 

2.3.5.

 

MAX/MIN 

This key is for measuring maximum value and minimum value. 
1)

 

press it to enter Max/Min mode and simultaneously display the maximum value. 

2)

 

Press it again; the LCD will display the Minimum Value 

3)

 

Press it again; the LCD will display the current Value 

4)

 

Press and hold it for two seconds, the meter will return to normal measurement state. 

2.3.6.

 

 

Press the this key, backlighton, press it again, backlight off. 
 

3.

 

FUNCTION 

3.1.

 

General Functions 

3.1.1.

 

Auto scan mode 

 

When the meter is turned on, it will be power-on reset to auto scan mode. The meter automatically 
selects the appropriate measurement mode and range according to the measured object. In Auto-
Scan mode, press RANGR, HOLD, MAX MIN keys are valid, press SELECT key to exit Auto SCAN mode. 
In automatic scan mode, full automatic measurement shown as in the Table 2: 
 
 

Summary of Contents for AX-174

Page 1: ...AX 174 INSTRUCTION...

Page 2: ...D Display 8 2 3 Key pad 9 3 FUNCTION DESCRIPTION 9 3 1 general Functions 9 3 1 1 Auto scan mode 9 3 1 2 DATA HOLD mode 10 3 1 3 Manual ranging and Auto range mode 10 3 1 4 True RMS measurement 11 3 1...

Page 3: ...ifications 15 4 2 Measurement specifications 15 4 2 1 AC Voltage 16 4 2 2 DC Voltage 16 4 2 3 Resistance 16 4 2 4 Continuity Check 16 4 2 5 Diode Test 16 4 2 6 Capacitance 17 4 2 7 Current 17 4 2 8 Li...

Page 4: ...e low energy source derived from a highwinding resistance transformer such as the high voltage section of a copier CAT II Single phase receptacle connected loads Applience portale tools and Rother hou...

Page 5: ...using probes keep your fingers behind the finger guards When making connections connect the common test lead before connecting the live test lead when disconnecting disconnect the live test lead befo...

Page 6: ...carried out on the meter while it is live should be carried out only by appropriately qualified personnel after having taken into account the instructions in this present manual A qualified person is...

Page 7: ...ults and various symbols 2 Keypad Measurement function keys 3 Rotary switch Used for selecting measurement functions 4 Terminal receiving the red test lead for voltage resistance capacitance diode and...

Page 8: ...selects the range with the best resolution 8 MANU The meter is in the Manual Range mode in which the user selects the range 9 HOLD When HOLD functon is enabled When delay hold is selected the HOLD sy...

Page 9: ...st for 2 seconds the meter will delay for 6 seconds than enters HOLD mode 2 3 4 Hz During the voltage or current measurement by pressing Hz key the meter will enter the linear frequency measurement st...

Page 10: ...ill delay for 6 seconds that enters HOLD mode 3 1 3 Manual ranging and Auto range mode The Meter has both manual ranging and auto range options In the auto range mode the Meter selects the best range...

Page 11: ...attempt to take any voltage measurement that might exceeds 1000Vdc or 1000Vac rms To avoid electrical shock and or damage to the instrument do not apply more than 1000Vdc or 1000Vac rms between that...

Page 12: ...rms Detection distance 10cm It s related to the source value Figure 3 Non contact electric field detector 3 2 3 Resistance measurement To avoid electrical shock and or damage to the instrument disconn...

Page 13: ...ntinuous beeping will indicate it Figure 3 4 Checking the Continuity 3 2 5 Diode Test To avoid electrical shock and or damage to the instrument disconnect circuit Power and discharge all high voltage...

Page 14: ...uto scan mode or press the SELECT key to activate capacitance measuring mode 3 Connect the black and red test leads to the COM and terminals respectively 4 Connect the test leads to the capacitor bein...

Page 15: ...0V CAT III and 600V CAT IV Pollution degree 2 Altitude 2000m Operating temperature 0 40 C 32 F 122 F 80 RH 10 C non condensing Storage temperature 10 60 C 14 F 140 F 70 RH battery removed Temperature...

Page 16: ...that will not affect the accuracy of measurement 4 2 2 DC Voltage DCV Range Resolution Accuracy 600mV 0 1mV 0 5 5 6V 1mV 0 8 5 60V 10mV 0 8 5 600V 100mV 0 8 5 1000V 1V 1 0 2 4 2 3 Resistance Range Re...

Page 17: ...olution Accuracy 600 A 0 1 A 1 5 5 6000 A 1 A 60mA 0 01mA 1 8 8 600mA 0 1mA 10A 10mA 2 8 Above accuracies can be guaranteed within 5 100 of the full range The true RMS meter has residual value within...

Page 18: ...dings To clean the terminals Turn the meter off and remove all test leads Shake out any dirt that may be in the terminals Soak a new swab with a cleaning and oiling agent such as WD 40 Work the swab a...

Page 19: ...e input terminals 1 Set rotary switch to the OFF position 2 Disconnect test leads and or any connectors from the terminals 3 Use a screwdriver to unlock the two screws on the battery cover 4 Take out...

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