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Tenma 72-7224 Скачать руководство пользователя страница 9

9

FREQUENCY MEASUREMENT

DUTY CYCLE MEASUREMENT

• 

The duty cycle range is 0.1%~99.9%.

• 

To measure duty cycle, perform the following steps,

1. 

Insert the red test lead into the Hz Duty% 

 terminal and the black 

test lead into the COM terminal.

2.  Turn the rotary switch to Hz and press 

REL 

to select duty cycle measurement 

mode.

3.  Connect the test probes with the object 

being measured. The measured value 

shows on the display.

Note

: 

• 

When a measurement has been completed, 

disconnect the test probes from the circuit 

under test, and remove the test leads from the 

input terminals.

• 

The frequency ranges are 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz and 10MHz.

• 

To measure frequency, perform the following steps:

1. 

Insert the red test lead into the Hz Duty% 

 terminal and the black 

test lead into the COM terminal.

2.  Turn the rotary switch to 

Hz

.

3.  Connect the test probes with the object 

being measured. The measured value 

shows on the display.

Note:

 

• 

When a measurement has been completed, 

disconnect the test probes from the circuit under 

test, and remove the test leads from the input 

terminals.

Содержание 72-7224

Страница 1: ...1 Digital Clamp Meter Model 72 7224 72 7226 ...

Страница 2: ...e or current Do not use the meter around explosive gas or vapour When using the test leads keep your fingers behind the finger guards Remove test leads from the meter before opening the meter case or battery door Never operate the meter with the cover removed or the battery door open Use only the test leads supplied or the protection may be impaired Probe assemblies for mains measurements shall be...

Страница 3: ... symbol signifies the product complies with both USA and Canada requirements FUNCTIONS 1 Input terminals 2 LCD Display 3 Function buttons x 3 4 Range selector 5 Trigger press and release the trigger to open and close the detector jaw 6 Hands guard protects hands from touching the dangerous area 7 Detector jaw designed to pick up the AC and DC current flowing through the conductor It transfers curr...

Страница 4: ... 1 3 Note The input impedance is 10MΩ AC VOLTAGE Range Resolution Accuracy Overload Protection 4 000V 1mV 1 5 600V DC AC 40 00V 10mV 400 0V 100mV 600V 1V 1 2 5 Notes Input Impedance 10MΩ Frequency Response 40Hz 400Hz AC conversion type Average responded calibrates the reading to be RMS by sine wave input RESISTANCE Range Resolution Accuracy Overload Protection 400 0Ω 100mΩ 1 2 2 600Vp 4 000kΩ 1Ω 1...

Страница 5: ...of a circuit under test is 10Ω 100Ω The buzzer does not beep when the resistance of a circuit under test is higher than 100Ω FREQUENCY Range Resolution Accuracy Overload Protection 10Hz 0 001Hz 0 1 3 600Vp 100Hz 0 01Hz 1kHz 0 1Hz 10kHz 1Hz 100kHz 10Hz 1MHz 100Hz 10MHz 1kHz For reference only Notes Input Sensitivity 100kHz 300mVrms 100kHz 600mVrms 1MHz 800mVrms Input Amplitude at 10Hz 100kHz 30Vrms...

Страница 6: ...red is placed at the center of the detector jaw otherwise it will produce 1 0 measuring deviation based on the stated accuracy 2 Open the jaw and remove the detector from the current conductor 3 Press REL to display zero 4 Repeat Step 1 AC CURRENT Range Resolution Accuracy Frequency Response Overload Protection 40 00A 0 01A 2 5 8 50Hz 60Hz 400A DC AC 400 0A 0 1A 2 5 5 Note To measure AC current an...

Страница 7: ...mpleted disconnect the test probes from the circuit under test and remove the test leads from the input terminals Measuring Resistance The resistance ranges are 400Ω 4kΩ 40kΩ 400kΩ 4MΩ and 40MΩ To measure the resistance perform the following steps 1 Insert the red test lead into the Hz Duty terminal and the black test lead into the COM terminal 2 Turn the range selector to Ω Press REL to switch fr...

Страница 8: ... test probe to the cathode Notes To obtain a more precise reading you could remove the object being measured from the circuit when measuring When a measurement has been completed disconnect the test probes from the circuit under test and remove the test leads from the input terminals To test continuity perform the following steps 1 Insert the red test lead into the Hz Duty terminal and the black t...

Страница 9: ...urement has been completed disconnect the test probes from the circuit under test and remove the test leads from the input terminals The frequency ranges are 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz and 10MHz To measure frequency perform the following steps 1 Insert the red test lead into the Hz Duty terminal and the black test lead into the COM terminal 2 Turn the rotary switch to Hz 3 Connect the test ...

Страница 10: ...e rear of the meter to the front 4 Do not release the jaw suddenly as the built in Hall components are very sensitive to magnetic force heat and mechanical stress any shock could cause damage and create read errors Notes Press REL to subtract a stored value from the present measurement value then a differential measurement result is displayed When a measurement has been completed open the detector...

Страница 11: ...ve source and the meter Open the battery cover on the rear case with a screwdriver Remove the old battery and fit a new 9V battery into the battery holder Replace the battery cover Cleaning Clean the meter with a clean soft cloth Do not use any chemicals abrasives or solvents that could damage the meter Clean the terminals with a mild detergent as dirt on the terminals can affect readings Battery ...

Страница 12: ...s is required Do not dispose of these items with general household waste Separate for the treatment recovery and recycling of the materials used Waste batteries can be returned to any waste battery recycling point which are provided by most battery retailers Contact your local authority for details of the battery and WEEE recycling schemes available in your area Made in China PR2 9PP Man Rev 1 0 ...

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