Sperry instrument DM-4100A, Operating Instructions Manual

Page 1: ...ments cannot be prevented by any printed word and may cause injury and or equipment damage Please follow all these instructions and measurement procedures faithfully and adhere to all standard industr...

Page 2: ...9 8 Fuse Replacement 10 9 Operation 11 9 1 Voltage Measurements 11 9 2 Current Measurements 12 13 9 3 Resistance Measurements 13 9 4 Battery Test Measurements 13 9 5 Diode Tests 14 9 6 Non Contact Vo...

Page 3: ...ry Instruments Inc shall be limited to the repair or replacement at its sole option of any defective product THIS WARRANTY AND THE OBLIGATIONS AND LIABILITIES OF SELLER THEREUNDER ARE EXCLUSIVWE AND I...

Page 4: ...ectronic overload protection against accidental application of voltage to resistance and continuity circuits combined with its rugged construction make it a durable and reliable instrument Sec 2 FEATU...

Page 5: ...36Dmm Weight Approximately 7 0 oz 200g including battery RANGES DC Voltage 3 Range Resolution Accuracy 18 C to 28 C Input Impedance 2V 1mV 0 5 of rdg 2D 1M 20V 10mV 200V 100mV 1000V 1V Normal Mode Rej...

Page 6: ...C to 28 C Open Circuit Voltage 200 10m 1 2 of rdg 3d 2 8V 2K 1 1 0 of rdg 1d 0 3V 20K 10 200K 100 2M 1K 1 5 of rdg 2d Diode Check Overload Protection 250VDC or peak AC Electronic No fuse blow Range Te...

Page 7: ...nside the DMM with any other than the AWS Part number specified or approved equal 6 Remember Think Safety and Act Safely 7 When testing for the presence of voltage make sure the voltage function is op...

Page 8: ...NCV Sensor End 6 Fig 1 Non Contact Voltage Function Digital Display Input Terminals Range Selector Switch...

Page 9: ...complete and ready to use Check the following contents list when unpacking If any pieces are missing notify the distributor you purchased the instrument from or Sperry Instrument Inc Operating Instru...

Page 10: ...mal point moves as the ranges are changed The maximum display reading is 1999 The 200DCV range will actually only read 199 9Vdc We call this the 200DCV range for convenience only 6 You can now check t...

Page 11: ...ized circuit and then from the instrument 2 Turn the range switch to the OFF position 3 Slide off the back case battery cover 4 Remove the battery from the compartment and unsnap the battery connector...

Page 12: ...then disconnect the test leads from the instrument Replace the fuse with Part F 17 or approved equal only Always use fast acting high interrupting type fuses 1 Disconnect the test leads from any ener...

Page 13: ...position if an arc voltage is to be measured CAUTION To avoid possible electric shock instrument damage and or equipment damage do not attempt to take any voltage measurements if the voltage is above...

Page 14: ...ured Energized the circuit 4 If the reading is less than 0 20 Amps you can switch to a lower range for greater accuracy If not you have completed your measurement and skip to step 7 CAUTION Before cha...

Page 15: ...lectric shock instrument damage and or equipment damage do not connect the COM and V terminals to cir cuits having a potential difference exceeding 250VDC AC Do not con nect the COM terminal to potent...

Page 16: ...bes to the diodes A forward voltage drop is about 0 6V typical for a silicon diode 5 Reverse probes If the diode is good 1 is displayed If the diode is shorted 000 or another number is displayed 6 If...

Page 17: ...or air could enter the interior of the instrument while drying Sec 10 2 BATTERY REPLACEMENT Required when appears on display or nothing appears See BATTERY REPLACEMENT in section 7 Sec 10 3 FUSE REPLA...

Page 18: ...t Sec 11 1 CALIBRATION PROCEDURE The procedure should be performed at an ambient temperature of 25 C 2 C and at a relative humidity of less than 80 Allow the instrument to stabilize at this temperatur...

Page 19: ...e DC calibrator for 1 9 0 02 and connect it to the 10A and COM input terminals 9 Adjust R001 shunt resistor until the display reads 1 9A 10 If the reading is over 1 9A add solder to R001 If the readin...

Page 20: ...Sec 12 DIAGRAMS Sec 12 1 CIRCUIT DIAGRAM 18 Note Subsequent revisions to this document may exist Use for general references only...

Page 21: ...R49 R97 R100 R90 R91 R92 R93 R94 R96 C10 C11 C12 C16 C13 Description Cu 100J 1F 9F 90F 274KF X2 176KF X2 90KF 9KF 900F 100F 47KJ X2 110KJ X3 1MJ X6 1MJ 560KJ 470KJ X2 5 6KJ 3 9J 27KF 2KF 900F VR 200...

Page 22: ...D91 D92 Q10 Q11 Q12 Q90 Q91 F1 PTC U10 U90 BEEPER 10nF 25V 10uF 16V 1uF 25V X2 330PJ 1N4004 X4 1 N4007 1N4148 X2 LED red Zn 3 6VB 2SC2859 PN2222 X4 0 5A 250V PTC 2 2K A D 5106 4069 3V SMD SMD SMD SMD...

Page 23: ...er 2150 Joshua s Path Suite 302 Hauppauge New York 11788 State in writing what is wrong with the instrument All warranty repairs must include proof of purchase In the form of a legible or original cop...