LG DM-311 User Manual Download

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Adjustment and Test procedure Manual

for digital multimeter

Model : DM-311

LG Precision Co., Ltd

.

1999/8/12

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Summary of Contents for DM-311

Page 1: ...Adjustment and Test procedure Manual for digital multimeter Model DM 311 LG Precision Co Ltd 1999 8 12 ...

Page 2: ...Adjustment and test procedure Manual DM 311 Version 1 0 Page 2 of 12 99 08 26 LG Precision Co Ltd Revision History NO Modification ECN NO Date Name ...

Page 3: ... part of DM 311 ç Terminal 10A Used for measuring DC AC current below 10A current è Terminal COM Used for commom terminal é Terminal Ω V Used for AC DC voltage or resistance measure terminal ê Terminal mA Used for measuring DC AC current below 200mA current ë LCD display ì Rotary S W Used for selecting mode and range Fig 1 Front View of DM 311 Note Adjustment and Test of DM 311 should be conducted...

Page 4: ...splay is turned on 2 LCD Display Test Check LCD Display to each range by selecting range with Rotary S W Below chart shows correct display Function LCD Display to each range DC VOLTAGE 00 0 000 0 00 00 0 000 AC VOLTAGE 00 0 000 0 00 00 0 000 DC CURRENT 00 0 000 0 00 00 0 0 00 AC CURRENT 00 0 000 0 00 00 0 0 00 RESISTANCE 1 1 1 1 1 1 BAT 000 0 00 DIODE CONTINUITY 1 3 Low Battery Warning Display Tes...

Page 5: ... Current 10A Mode 2 Apply DC 10A current to terminal COM and terminal 10A of DM 311 with a calibrator 3 Adjust Mn Wire R39 with ripper to be displayed 10 00A on LCD display 5 Test 5 1 No Input on DC Voltage Mode n Specification 00 1 n Set Rotary S W to DC Voltage mode and check DM 311 to meet the above specification 5 2 Short circuit on DC Voltage Mode n Specification 00 1 n Set Rotary S W to DC V...

Page 6: ... 1 9V 400Hz AC 20V 19V 60Hz 19V 400Hz AC 200V 190V 60Hz 190V 400Hz AC 750V 0 75 3dgt 0 65 3dgt 750V 60Hz 750V 400Hz 5 5 DC Current Measurement Test Set Rotary S W to DC Current Mode and Apply below DC current to terminal COM and terminal mA to each range with a calibrator Check the measurement value to each range Range Customer Specification Factory Specification Test DC Current DC 200µΑ 190µΑ DC ...

Page 7: ...z 19mΑ 400Hz AC 200mΑ 2 0 2dgt 1 9 2dgt 190mΑ 60Hz 190mΑ 400Hz Apply below AC current to terminal COM and terminal 10A with a calibrator Range Customer Specification Factory Specification Test AC Current AC 10A 3 0 2dgt 2 9 2dgt 9A 60Hz 9A 400Hz 5 7 Resistance Measurement Test Set Rotary S W to Resistance Measure Mode and Apply below resistance value to terminal COM and terminal V to each range wi...

Page 8: ...uit between terminal COM and terminal V Buzzer will sound when measurement is less than 200 Ω Range Customer Specification Factory Specification Continuity Open Circuit 1 Short Circuit less than 00 4 5 9 Battery Test Set Rotary S W to BAT 1 5V Range and apply below current to terminal COM and terminal V with a calibrator Range Customer Specification Factory Specification Test DC Current 1 5V 1 0 2...

Page 9: ...4W 0 2 0 05 R23 1 573 146 RESISTOR M F 9 KOHM 1 4W 0 2 0 05 R24 1 573 147 RESISTOR M F 900 OHM 1 4W 0 2 0 05 R25 1 574 052 2 PTC PT05MP L1K6001 R27 1 574 052 2 PTC PT05MP L1K6001 R28 1 574 052 2 PTC PT05MP L1K6001 R27A 1 574 055 SPARK GAP AG15PC 152FS K2M DAIYOYDEN SG1 1 581 160 CAPACITOR ELEC 47UF 16V SRE TYP C08 1 581 160 CAPACITOR ELEC 47UF 16V SRE TYP C09 1 581 162 CAPACITOR ELEC 1UF 50V SRE T...

Page 10: ... 1 3216 R01 1 RMAH1003J RESISTOR M F 100 KOHM 1 8W 5 3216 R06 1 RMAH1003J RESISTOR M F 100 KOHM 1 8W 5 3216 R30 1 RMAH1004F RESISTOR M F 1 MOHM 1 8W 1 3216 R13 1 RMAH1004F RESISTOR M F 1 MOHM 1 8W 1 3216 R14 1 RMAH1004J RESISTOR M F 1 MOHM 1 8W 5 3216 R03 1 RMAH1004J RESISTOR M F 1 MOHM 1 8W 5 3216 R07 1 RMAH1004J RESISTOR M F 1 MOHM 1 8W 5 3216 R08 1 RMAH1004J RESISTOR M F 1 MOHM 1 8W 5 3216 R10 ...

Page 11: ...N Quantity RMAH5100J RESISTOR M F 510 OHM 1 8W 5 3216 R20 1 RMAH8200J RESISTOR M F 820 OHM 1 8W 5 3216 R19 1 RMAH8201F RESISTOR M F 8 2 KOHM 1 8W 1 3216 R33 1 RMAH9103J RESISTOR M F 910 KOHM 1 8W 5 3216 R29 1 RMBP9000D RESISTOR M F 900 OHM 1 4W 5 R35 1 RMBP90R0D RESISTOR M F 90 OHM 1 4W 5 R36 1 RMBP9R00D RESISTOR M F 9 OHM 1 4W 5 R37 1 ...

Page 12: ...Adjustment and test procedure Manual DM 311 Version 1 0 Page 12 of 12 99 08 26 LG Precision Co Ltd Appendix B Schematic Diagram of DM 311 ...

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