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CEM DT-337, Operating Instruction, Page: 4 / 13

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CEM DT-337 Operating Instruction Download Page 4

 

3 

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Meter Description 

1.  Current clamp 

2.  Clamp trigger 

3.  Safety protection ring 

4.  ZERO button 

5.  Data Hold and Backlight button 

6.  Mode select button 

7.  Range select button 

8.  Hz/%duty button 

9.  Rotary Function swith 

10. LCD display 

11. COM input jack 

12. V 

Ω

 

Hz/%

 jack 

13. Battery Cover 

 

 
 

1. 

AC  DC 

     AC (alternating current)  

and DC (direct currrent) 

2.                    Minus sign 

3. 

8.8.8.8

 

  4000 count (0 to 3999)  

measurement reading 

4. 

AUTO 

       AutoRange mode 

5. 

ZERO 

        ZERO mode 

6.                     Diode test mode  

7.     

•)))

          Audible Continuity 

8.

 

HOLD 

       Data Hold mode 

 

9.

℃

,

℉

,

 

m,V,A,K,M,

Ω

,

 Units of measure list

 

 

 

 

Summary of Contents for DT-337

Page 1: ...OPERATING INSTRUCTION DC AC CLAMP METER ...

Page 2: ... allowable input range of any function Do not apply voltage to meter when resistance function is selected Set the function switch OFF when the meter is not in use WARNINGS Set function switch to the appropriate position before measuring When measuring volts do not switch to current resistance modes Do not measure current on a circuit whose voltage exceeds 240V When changing ranges using the select...

Page 3: ...emove the battery if the meter is to be stored for long periods Always discharge capacitors and remove power from the device under test before performing Diode Resistance or Continuity tests Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed electrical contacts Other means should be used to ensure that the terminals are not...

Page 4: ...button 8 Hz duty button 9 Rotary Function swith 10 LCD display 11 COM input jack 12 V Ω Hz jack 13 Battery Cover 1 AC DC AC alternating current and DC direct currrent 2 Minus sign 3 8 8 8 8 4000 count 0 to 3999 measurement reading 4 AUTO AutoRange mode 5 ZERO ZERO mode 6 Diode test mode 7 Audible Continuity 8 HOLD Data Hold mode 9 m V A K M Ω Units of measure list ...

Page 5: ...igits 400 0 V DC 600 V DC 2 0 3 digits AC Voltage 50 60Hz 400 0 mV AC 1 0 30 digits 4 000 V AC 2 0 5 digits 40 00 V AC 400 0 V AC 600 V AC 2 0 5 digits Resistance 400 0 Ω 1 0 4 digits 4 000KΩ 1 5 2 digits 40 00KΩ 400 0KΩ 4 000MΩ 2 5 3 digits 40 00MΩ 3 5 5 digits Capacitance 40 00nF 5 0 reading 30digits 400 0nF 3 0 reading 5 digits 4 000μF 3 5 reading 5 digits 40 00μF 100 0μF 5 0 reading 5 digits F...

Page 6: ...Hz 50 00kHz 500 0kHz 5 000MHz 10 00MHz Duty Cycle 0 5 to 99 0 1 2 reading 2 digits Pulse width 100µs 100ms Frequency 5Hz to 150kHz Sensitivity 10Vrms min Analog output for ACA DCA range 10mV Amp 20KHz at 3dB Accuracy 4 5 reading 1mV Output impedance approx 3KΩ ...

Page 7: ...ng Temperature 14 to 122 o F 10 to 50 o C Storage Temperature 22 to 140 o F 30 to 60 o C Relative Humidity 90 0 o C to 30 o C 75 30 o C to 40 o C 45 40 o C to 50 o C Altitude Operating 3000m Storage 10 000m Over voltage Category III 600V Battery Two 1 5V AAA Batteries Auto OFF approx 25 minutes Dimensions Weight 200x50x35mm 200g Safety For indoor use and in accordance with Overvoltage Category II ...

Page 8: ...C DC Current Measurements WARNING Ensure that the test leads are disconnected from the meter before making current clamp measurements 1 Set the Function switch to the 80ADC 4ADC 80AAC or 4AAC range If the range of the measured is not known select the higher range first then move to the lower range if necessary 2 Press the trigger to open jaw Fully enclose one conductor to be measured 3 If is DCA m...

Page 9: ...ead into the positive terminal 2 Set the function switch to the Ω position 3 Use the multifunction MODE button to select resistance 4 Touch the test probe tips across the circuit or component under test It is best to disconnect one side of the device under test so the rest of the circuit will not interfere with the resistance reading 5 For Resistance tests read the resistance on the LCD display 6 ...

Page 10: ... 1 Set the rotary function switch to the cap position 2 Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug into the positive V jack 3 Touch the test leads to the capacitor to be tested 4 Read the capacitance value in the display Frequency or duty cycle measurements 1 Set the rotary function switch to the Hz position 2 Insert the black lead banana...

Page 11: ...f the test leads to the meter or oscilloscope input terminal 4 Open the clamp by pressing the jaw opening handle and insert the cable to be measured into the jaw 5 Close the clamp and get the analog voltage signal from the meter Note If measuring DC via clamp signal output will be DC voltage If measuring AC via clamp signal output will be DC voltage If measuring AC via clamp signal output will be ...

Page 12: ...ote The HOLD feature will activate when the Backlight is turned on Press the HOLD key again to exit Hold ZERO BUTTON For ACA and Capacitance Zero Offset adjustment Manual Ranging The meter turns on in the autoranging mode Press the Range button to go to manual ranging Each press of the range button will step to the next range as indicated by the units and decimal point location Press and hold the ...

Page 13: ...12 4 Re assemble the meter ...

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