Lutron Electronics DM-9961 Manual Download Page 1 | Manualshive

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True RMS

AUTO RANGE

MULTIMETER

CAT III-1000 V category, Auto range, REL, Capacitance

Hz, Duty, ACV, ACA, DCV, DCA, Ohms

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Summary of Contents for DM-9961

Page 1: ...True RMS AUTO RANGE MULTIMETER CAT III 1000 V category Auto range REL Capacitance Hz Duty ACV ACA DCV DCA Ohms ...

Page 2: ...voltage current to the input terminal Remove test leads before open the battery cover Cleaning Only use the dry cloth to clean the plastic case Environment Conditions Installation Categories III 1000V Pollution Degree 2 Altitude up to 2000 meters Indoor use Relative humidity 80 max ...

Page 3: ...5 2 DC voltage AC voltage Measurement 10 5 3 Resistance Measurement 10 5 4 DC current AC current Measurement 11 5 5 Continuity Check 13 5 6 Diode Test 13 5 7 Capacitance Measurement 14 5 8 Frequency DUTY Measurement 15 5 9 Relative Measurement 16 5 10 Data Hold Operation 16 6 MAINTENANCE 17 6 1 Replacement of Battery 17 6 2 Cleaning 17 6 3 Replacement of Fuse 18 7 OPTIONAL ACCESSORIES ADAPTERS 19 ...

Page 4: ...rement it also can measure the signal frequency duty at the same time 4000 counts A D high resolution Both 10 A mA uA current are build fuse for safety consideration 10 M ohm impedance for voltage circuit Operates from one DC 9V battery Built in overload protection for most ranges Uses durable long lasting components enclosed in strong light weight ABS plastic housing Full line optional adapters C...

Page 5: ...cial function Relative measurement Data hold Data hold To freeze the display reading on the LCD display Power On Off Auto power of or manual power off management Details please refer page 8 Relative To offset the measurement value measurement Polarity Automatic Switching indicates negative polarity Zero adjustment Automatic Sampling time Approx 0 5 to 1 second Operating 0 to 50 32 to 122 Temp humi...

Page 6: ...e adapters accessories ACA DCA current adapter Tachometer adapter Humidity adapter Pressure adapter Light adapter EMF adapter Sound level adapter High voltage probe 2 2 Electrical Specifications 23 5 DC Voltage Range 400 0 mV 4 V 40 V 400 V 1000 V Resolution 0 1 mV 1 mV 10 mV 100m V 1 V Accuracy 0 5 2d Input impedance 10 M ohm Over load 500 DCV 350 ACV 400 mV range protection 1000 DCV 1000 ACV oth...

Page 7: ...urrent Range 10 A 400 mA 40 mA 4000 uA 400 uA Resolution 10 mA 0 1 mA 0 01 mA 1 uA 0 1 uA Accuracy 400 mA 40 mA 4000 uA 400 uA 0 5 2d 10 A 1 5 2d ACA spec are tested under 50 60 Hz Over load 10A range 10A fuse protection uA mA range 500 mA fuse Diode Forward voltage VF Range 4 V DC Resolution 0 001 V Accuracy 0 5 2d Capacitance Range 40 nF 400 nF 4 uF 40 uF Resolution 10 pF 0 1 nF 1 nF 10 nF Accur...

Page 8: ...itch set to Hz and level 2 Vp p to 5 Vp p square wave 10 KHz max Function switch set to ACV ACA 50 Hz to 500 Hz OHMS Range 400 4 K 40 K 400 K 4 M 40 M ohm Resolution 0 1 1 10 100 1 K 10 K ohm Accuracy 400 ohm 0 5 2d 4K 40K 400K 4 M 40 M 2 5d Over load 500 DCV 350 ACV protection Continuity Beeper Beeper will sound if measured resistance less than 20 ohm Remark Spec tested under the environment RF F...

Page 9: ...3 FRONT PANEL DESCRIPTION Fig 1 6 ...

Page 10: ... REL button 3 5 DCA ACA button 3 6 RANGE button 3 7 Ohm Diode Buzzer button 3 8 Function rotary switch 3 9 10A input terminal 3 10 mA uA input terminal 3 11 COM input terminal 3 12 Voltage Ohm Cap Hz input terminal 3 13 Battery compartment Cover 3 14 Stand 7 ...

Page 11: ...um rated voltage and current to the input terminal 6 Always switching the Function Rotary Switch to the Off position when the instrument is not operation 7 Remove the battery if the instrument is not to be used in a long period of time 8 For safety consideration when change the new test leads it should use the replace test leads that already approval of CATIII 1000 V at least 9 Power On Off manage...

Page 12: ...operated REL Appears when the Relative function is operated Battery voltage is already under the low condition Appears when the Continuity beeper is operated mV V Units for voltage measurements uA mA A Units for Current measurement Ω KΩ MΩ Units for resistance measurements nF uF Units for Capacitance measurement Hz KHz MHz Units for Frequency measurement Duty Appears when the Diode function is ope...

Page 13: ... When LCD show the AUTO marker the meter is under the auto range mode Meter will select the suitable measurement range automatically Under the operation of auto range mode push the Range button 3 6 Fig 1 once will execute the Manual Range mode and hold the range the AUTO marker will be disappeared Under the manual range operation push the Range button 3 6 Fig 1 2 seconds will return to auto range ...

Page 14: ...6 Fig 1 2 seconds will return to auto range operation the AUTO marker will present on the LCD again 5 4 DC Current AC Current Measurement mA 400 mA range 40 mA range uA 4000 uA range 400 uA range 1 Connect BLACK test lead into COM terminal 3 11 Fig 1 2 For the mA uA measurement connect RED test lead into mA uA terminal 3 10 Fig 1 For the 10 A current measurement connect RED test lead into A termin...

Page 15: ...t display will show DC 5 When LCD show the AUTO marker the meter is under the auto range mode Meter will select the suitable measurement range automatically 6 When LCD show the AUTO marker the meter is under the auto range mode Meter will select the suitable measurement range automatically Under the operation of auto range mode push the Range button 3 6 Fig 1 once will execute the Manual Range mod...

Page 16: ...nerated 5 6 Diode Test 1 Connect BLACK test lead into COM terminal 3 11 Fig 1 2 Connect RED test lead into Ω terminal 3 12 Fig 1 3 Select the Function rotary switch 3 8 Fig 1 to Ohm Diode Buzzer Button 3 7 Fig 1 for display show 4 a When connected with polarity as shown in Fig 2 a forward current flow is established and the approx Diode Forward Voltage VF value in volt will appears on the display ...

Page 17: ... diode under test is defective 000 or other numbers will be displayed Proper diode testing should include both steps a and b above Fig 3 5 7 Capacitance Measurement 1 Connect BLACK test lead into COM terminal 3 11 Fig 1 2 Connect RED test lead into terminal 3 12 Fig 1 3 Select the Function rotary switch 3 8 Fig 1 to the position 14 ...

Page 18: ...nce measurement the meter is always under the auto range mode it will select the suitable measurement range automatically 5 8 Frequency Duty Measurement Frequency 1 Connect BLACK test lead into COM terminal 3 11 Fig 1 2 Connect RED test lead into V terminal 3 12 Fig 1 3 Select the Function rotary switch 3 8 Fig 1 to the Hz position then push the Hz DUTY Button 3 3 Fig 1 for display show Hz 4 For t...

Page 19: ...t once then LCD will show zero value a REL indicator 2 The input measured values will deduct last measured values automatically then show those new value on the display 3 It will cancel the relative measurement function if push the REL button at once again at same time the REL marker will disappear 5 10 Data Hold Operation 1 During the measurement pushing the Hold button 3 2 Fig 1 once a while wil...

Page 20: ...ttery However in spec measurement may still be made for several hours after Low battery indicator appears before the instrument become inaccurate 2 Open the screw of Battery Cover 3 13 Fig 1 by loosing the screws then move the battery 3 Replace with DC 9V battery 006 P and reinstate the cover 6 2 Cleaning Caution Cleaning Only use the dry cloth to clean the plastic case 17 ...

Page 21: ...urrent range can not operation please check if the Fuse A is broken or not 2 When the 10 A current range can not operation please check if the Fuse B is broken or not 3 When replace the fuse should take the test leads from the measuring circuit and power off the meter 4 Take the screws away from the down case loose the housing case the fuses are install on the fuse socket on the PCB 5 For safety c...

Page 22: ...ADAPTERS Item Model Carrying Case CA 05A Humidity Adapter HA 702 Light Adapter LX 02 EMF Adapter EMF 824 Pressure Adapter PS 403 Anemometer Adapter AM 402 Tachometer Adapter TA 601 Sound Adapter SL 406 High Voltage Probe HV 40 19 ...

Page 23: ...8 THE ADDRESS OF AFTER SERVICE CENTER 20 0411 DM 9961 ...

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