Meterman Meterman BDM40 Operator'S Manual Download | Manualshive

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Operator’s Manual

Model BDM40

Bench Digital Multimeter

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Summary of Contents for Meterman BDM40

Page 1: ...Be nch Digit a l Mult im e t e r Operator s Manual Model BDM40 Bench Digital Multimeter...

Page 2: ...nputs are protected against continuous overload conditions up to the limits of each function s stated input protection see specifications Never exceed these limits or the ratings marked on the instrum...

Page 3: ...suitably rated and approved HBC mains fuse refer to the rating information on the equipment and or user instructions for details As a guide cable of 0 75 mm should be protected by a 3A or 5A fuse Lar...

Page 4: ...y 1 year UNPACKING YOUR INSTRUMENT The shipping box should contain this manual your multimeter test leads one red and one black two spare fuses 2A two spare fuses 0 08A 230 V and 0 125A 117 V and 2 po...

Page 5: ...s of the range selected the LED display will flash All decimal point positions appear in the display to indicate certain illegal combinations of front panel switch settings For example if you select t...

Page 6: ...ude pulses Each measurement function is equipped with input overload protection Table 1 lists the overload limits for each function Input Connections to Common WARNING TO AVOID ELECTRICAL SHOCK AND OR...

Page 7: ...ue the rms value was pi 2 2 1 2 2 pi 1 11 of the average value when measuring a sine wave Most meters used an average responding converter and multiplied by 1 11 to present true rms measurements of si...

Page 8: ...n half power levels Your instrument has a bandwidth of greater than 200kHz Slew rate Slew rate is also called the rate limit or the voltage velocity limit It defines the maximum rate of change of the...

Page 9: ...ses would have a zero rise time as shown in Figure 3 0 707 0 5 300 150 3 100 2 0 3 50 rms Total V 0 5 100 50 100 0 50 DC V 0 5 0 25 0 25 0 50 2 0 5 2 0 707 rms V AC When the maximum distortion in rise...

Page 10: ...FUL NOT TO TOUCH THE PROBE TIPS WITH YOUR FINGERS OR TO ALLOW THE PROBE TIPS TO TOUCH EACH OTHER 7 Insert the probe tips of the test leads into the slots of a power outlet The LED should display the t...

Page 11: ...RECTIFIED PK 0 PK PK RECTANGULAR PULSE PK 0 X Y D X Y K D D 2 PK PK TRIANGLE SAWTOOTH PK 0 RMS CAL IS DISPLAYED VALUE FOR AVERAGE RESPONDING METERS THAT ARE CALIBRATED TO DISPLAY RMS FOR DINE WAVES Yo...

Page 12: ...C Total RMS Figure 5 RMS Values Insignificance of inherent meter offset If you short the input of your meter while the AC voltage function is selected you should have a reading of less than 10 digits...

Page 13: ...t you may have to consider an error caused by the voltage drop across the meter in this case across the protective fuses and current shunts This voltage drop is called burden voltage The maximum full...

Page 14: ...wing procedure to familiarize yourself with the resistance function and to see how the range switches affect decimal point position on the LED 1 With the test leads held apart select the 2000 k range...

Page 15: ...d Service Information This DMM is warranted for a period of 1 year upon delivery to the original purchaser Conditions of the warranty are given on the first page of this manual and Service instruction...

Page 16: ...ive guides Display Access Use the following procedure to remove or replace the LED 1 Carefully lay the display PCB to one side 2 Both the Main and Display PCBs should now be flat on your workbench com...

Page 17: ...T display value lies within the indicated limits Table 5 Linear Voltage Test STEP UUT SWITCH POSITIONS UUT INPUT DISPLAY READING FUNCTION RANGE LEVEL FREQUENCY 1 2 200mV 190mVDC 190mVDC 189 90 to 190...

Page 18: ...nput to the UUT and verify that the UUT display is within the indicated limits Table 7 Resistance Test STEP SELECT RANGE INPUT DISPLAY READING 1 2 3 4 5 6 7 200 200 2k 20k 200k 2000k 20M Short 100 1 k...

Page 19: ...to 10 002 DC Current Calibration On the UUT select DC 20 A range and connect the 20A terminal to the calibrator HI amps output and COM to the calibrator LO amps output For each step in Table 10 selec...

Page 20: ...d with clean dry low pressure air 20 psi or less Contaminants can be removed from the pcb using demineralized water and a soft brush remove the display assembly before washing the Main PCB and avoid g...

Page 21: ...8 C to 50 C 32 F to 64 4 F and 82 4 F to 122 F Operating Temperature 0 C to 50 C 32 F to 122 F Storage Temperature 10 C to 70 C 14 F to 158 F Relative Humidity Up to 90 0 C to 35 C 32 95 F up to 70 35...

Page 22: ...range and full range INPUT RESOL VOLTAGE UTION Range 20Hz 45Hz 1kHz 2kHz 10kHz 20kHz 50kHz 10mV 200mV 10 V 200mV 0 1V 2V 100 V 2V 1 0 5 1 2 5 1V 20V 1mV 20V 15 15 15 15 15 10V 200V 10mV 200V 100V 100...

Page 23: ...es have enough voltage to turn on silicon junctions to check for proper forward to back resistance The 2k range is preferred and is marked with a large diode symbol on the front panel of the instrumen...

Page 24: ...al in writing from Meterman Test Tools Specifications subject to change Meterman Test Tools 2003 U S Service Center Meterman Test Tools 1420 75th Street SW Everett WA 98203 Tel 888 993 5853 Fax 425 44...

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