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Model 57030

OPERATOR’S

INSTRUCTION MANUAL

DIGITAL MULTIMETER

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Содержание 57030

Страница 1: ...Model 57030 OPERATOR S INSTRUCTION MANUAL DIGITAL MULTIMETER ...

Страница 2: ...cified in this manual SAFETY SYMBOLS Important safety information refer to the operating manual Dangerous voltage may be present Earth ground Double insulation Protection class II Fuse must be replaced with rating specified in the manual MAINTENANCE Before opening the case always disconnect test leads from all energized circuits For continue protection against fire replace fuse only with the speci...

Страница 3: ... TV or switching power circuits always remember that there may be high amplitude voltage pulses at test points which can damage the meter Always is careful when working with voltages above 60V dc or 30V ac rms Keep fingers behind the probe barriers while measuring Before attempting to insert transistors for testing always be sure that test leads have been disconnected from any measurement circuits...

Страница 4: ...FRONT PANEL 3 ...

Страница 5: ...d test lead connector for 10A measurement COM jack Plug in connector for black negative test lead VΩmA jack Plug in connector for red positive test lead for voltage resistance and current except 10A measurements SPECIFICATIONS Accuracy is specified for a period of one year after calibration and at 18 to 28 64 F to 82 F with relative humidity to 80 GENERAL Maximum voltage between terminals and eart...

Страница 6: ...on Accuracy 200µA 0 1µA 1 of rdg 2 digits 2mA 1µA 1 of rdg 2 digits 20mA 10µA 1 of rdg 2 digits 200mA 100µA 1 5 of rdg 2 digits 10A 10mA 3 of rdg 2 digits Overload Protection F 200mA 250V fuse 10A range unfused AC VOLTAGE Range Resolution Accuracy 200V 100mV 1 2 of rdg 10 digits 600V 1V 1 2 of rdg 10 digits Overload Protection 600V dc or rms ac for all ranges Frequency range 40Hz to 400Hz Response...

Страница 7: ...ry switch at desired DCV position If the voltage to be measured is not known beforehand set range switch at the highest range position and then reduce it until satisfactory resolution is obtained Connect test leads across the source or load being measured Read voltage value on the LCD display along with the polarity of the red lead connection DC CURRENT MEASUREMENT 1 2 3 4 Connect the red test lea...

Страница 8: ...ower and discharge all capacitors before applying test probes DIODE TEST 1 2 3 Connect the red test lead to the V Ω mA jack and the black test lead to the COM jack The polarity of red lead is positive Set the rotary switch at position Connect the red test lead to the anode of the diode to be tested and the black test lead to the cathode of the diode The approx forward voltage drop of the diode wil...

Страница 9: ...ould be replaced Fuse rarely needs replacement and usually blows as a result of operator s error To replace battery fuse 200mA 250V remove the 2 screws in the bottom of the case Simply remove the old battery and replace with a new one Be careful to observe battery polarity WARNING Before attempting to open the case always be sure that test leads have been disconnected from measurement circuits Clo...

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