Tektronix cdm250, User Manual

Page 1: ...User Manual CDM250 Digital Multimeter 070 6736 03...

Page 2: ...nd foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 100...

Page 3: ...ny other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish servi...

Page 4: ......

Page 5: ...ing AC or DC Current 8 Measuring Resistance 9 Checking Diodes 10 Appendix A Specifications 11 Appendix B Maintenance 17 Cleaning 17 Preparing for Shipment 17 Troubleshooting 18 No Display with Power O...

Page 6: ...trical Characteristics 12 Table 5 DC Volts Measurement Specifications 12 Table 6 AC Volts Measurement Specifications 13 Table 7 Direct Current Measurement Specifications 13 Table 8 Alternating Current...

Page 7: ...not apply a voltage to a terminal that is outside the range specified for that terminal Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric...

Page 8: ...ge Setting Before applying power ensure that the line selector is in the proper position for the power source being used Provide Proper Ventilation To prevent product overheating provide proper ventil...

Page 9: ...injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product DAN...

Page 10: ...General Safety Summary vi CDM250 User Manual...

Page 11: ...to 500 V in five ranges H Resistance from 0 to 20 M in six ranges All values are displayed on a 31 2 digit light emitting diode LED indicator Alternating voltages and currents are displayed in RMS val...

Page 12: ...to the input line voltage These selectors connect internal wiring for various line voltages This product is intended to operate from a power source that does not supply more than 250 VRMS between the...

Page 13: ...he power cord to a properly grounded power source The outside ground of this connector is connected through the equipment to the power source ground Do not remove the ground lug from the power cord fo...

Page 14: ...positive red test lead when instrument is used to measure high current over 2 A but less than 10 A 3 V Input connector for positive red test lead Used for AC volts DC volts and ohms functions 4 LED D...

Page 15: ...the out position for direct current or DC voltage The AC DC button may be in either position when the meter is used for checking resistance 8 COM jack Input connector for common black test lead Used...

Page 16: ...Getting Started 6 CDM250 User Manual...

Page 17: ...er position Refer to Preparing the Digital Multimeter for Use on page 2 2 Check that the FUNCTION and RANGE buttons are in the correct position If the value to be measured is unknown start at the high...

Page 18: ...Measuring AC or DC Current 1 Connect the black test lead to the black COM jack 2 For current up to 2 A connect the red test lead to the white 2A jack For current between 2 A and 10 A connect the red t...

Page 19: ...jack 2 Connect the red test lead to the red V jack 3 Push the ohms function button 4 Determine the highest anticipated resistance on the range scale and press the corresponding range button CAUTION To...

Page 20: ...lay Multiply the result by 10 to arrive at the forward voltage drop in millivolts If the reading on the display is 1 overrange indicator the diode may be defective open If the reading is 00 0 the diod...

Page 21: ...ange indicator Measurements AC and DC voltages AC and DC currents and resistance Maximum Common Mode Voltage 500 V DC AC peak Zero Adjustment Automatic Sampling Rate 2 5 measurements per second nomina...

Page 22: ...mum Ground Isolation Maximum of 500 V from earth ground NOTE Accuracy is specified for a temperature range of 18_C to 28_C 75 RH Table 5 DC Volts Measurement Specifications Range Resolution Accuracy I...

Page 23: ...1 V Response Time 8 s Overload Protection 200 mV range 500 VDC 350 VAC 2 V to 500 V ranges 500 VDC 500 VAC Table 7 Direct Current Measurement Specifications Manual Ranging Range Resolution Accuracy Lo...

Page 24: ...nual Ranging Range Resolution Accuracy Loading Error 200 A 0 1 A 1 5 of rdg 4 igits 300 mV RMS ma im m 2 mA 1 A 4 digits 4 H maximum 20 mA 10 A 45 500 Hz 200 mA 100 A 2000 mA 1 mA 1 1 V RMS ma im m 10...

Page 25: ...racy Maximum Test Current Max Open Circuit Voltage 200 W 0 1 W 0 75 of rdg 4 digits 2 5 mA 3 2 V 2 kW 1 W 0 75 of rdg 1 igit 250 mA 6 V 20 kW 10 W 1 digit 50 mA 200 kW 100 W 5 mA 2000 kW 1 kW 500 nA 2...

Page 26: ...opean Communities EN 55011 Class B Radiated and Conducted Emissions EN 50081 1 Emissions EN 60555 2 AC Power Line Harmonic Emissions EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge Immunity IEC...

Page 27: ...zene toluene xylene acetone or similar solvents Do not use abrasive cleaners on any portion of the digital multimeter Preparing for Shipment If the original packaging is unfit for use or not available...

Page 28: ...efore checking or replacing the fuses 1 Check the line fuse If the fuse is open replace it 2 If the line fuse is good check the power outlet for proper voltage If the outlet voltage is incorrect call...

Page 29: ...DM250 User Manual 19 Display On but CDM250 Does Not Read Current 10A 1 Check that the function and range button selections are correct 2 If function and range buttons are correct contact the nearest T...

Page 30: ...Appendix B Maintenance 20 CDM250 User Manual...

Page 31: ...ry Tektronix Part Number Fuse 3AG 0 125A 250V Slow Blow 90 132 V operation 159 0313 XX Fuse 3AG 2 A 250V Fast Blow 159 0021 XX CDM250 User Manual 070 6736 XX 115V power cord Refer to Table 13 Test Lea...

Page 32: ...re available Table 13 Accessory Power Cords Plug Configuration Normal Usage Tektronix Part Number North America 115 V 161 0104 00 Europe 230 V 161 0104 06 United Kingdom 230 V 161 0104 07 Australia 23...