background image

 

3

on the front of the meter. 

 

 

Never apply voltage or current to the meter that exceeds the 

specified maximum: 

 

 

SAFETY SYMBOLS 

 

This symbol adjacent to another symbol, terminal or 

operating  device  indicates  that  the  operator  must 

refer to an explanation in the Operating Instructions 

to avoid personal injury or damage to the meter. 

This 

WARNING

  symbol  indicates  a  potentially 

hazardous  situation,  which  if  not  avoided,  could 

result in death or serious injury. 

This 

CAUTION

  symbol  indicates  a  potentially 

hazardous  situation,  which  if  not  avoided,  may 

result damage to the product. 

This symbol advises the user that the terminal(s) so 

marked  must  not  be  connected  to  a  circuit  point  at 

which  the  voltage  with  respect  to  earth  ground 

WARNING 

CAUTION 

MAX   

500V

 

Summary of Contents for MMU-110

Page 1: ...eve ry 15 m in 1 0A C O M M A X V R ange M ode C AU T O D C AC R E L F TEM P AUTO RANGING MULTIMETER Products Code MMU 110 User Manual WWW MARMONIX CO...

Page 2: ...ntial Keep your body isolated from ground by using dry clothing rubber shoes rubber mats or any approved insulating material Turn off power to the circuit under test before cutting unsoldering or brea...

Page 3: ...tions to avoid personal injury or damage to the meter This WARNING symbol indicates a potentially hazardous situation which if not avoided could result in death or serious injury This CAUTION symbol i...

Page 4: ...500 VAC or VDC This symbol adjacent to one or more terminals identifies them as being associated with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety t...

Page 5: ...AC measurements 4 COM negative input jack 5 Positive input jack 6 MODE pushbutton 7 Range pushbutton 8 Data Hold Backlight pushbutton 9 Relative pushbutton SYMBOLS AND ANNUNCIATORS Continuity BAT Low...

Page 6: ...BAT is displayed when the battery voltage drops below the operating level Measurement rate 2 times per second nominal Auto power off Meter automatically shuts down after approx 15 minutes of inactivi...

Page 7: ...10mV 400 0V 100mV 600V 1V 1 5 of rdg 2 dgts Input Impedance 7 8M Maximum Input 1000V dc or 1000V ac rms AC Voltage Auto ranging except 400mV Range Resoluti on Accuracy 400 0mV 0 1mV 1 5 of rdg 15 dgts...

Page 8: ...r uA and mA Range Resolution Accuracy 10A 10mA 3 0 of rdg 7 dgts Overload Protection 10A 600V Fuse Frequency Range 50 to 400 Hz Maximum Input 10A dc or ac rms on 10A range Resistance Auto ranging Rang...

Page 9: ...uency Auto ranging Range Resolution Accuracy 9 999Hz 0 001Hz 1 5 of rdg 5 dgts 99 99Hz 0 01Hz 999 9Hz 0 1Hz 1 2 of rdg 3 dgts 9 999kHz 1Hz 99 99kHz 10Hz 999 9kHz 100Hz 9 999MHz 1kHz 1 5 of rdg 4 dgts...

Page 10: ...400 oF 1oF Sensor Type K Thermocouple Overload protection 1000V dc or ac rms Diode Test Test current Resolution Accuracy 0 3mA typical 1 mV 10 of rdg 5 dgts Open circuit voltage 1 5V dc typical Overlo...

Page 11: ...have selected Change to a higher range NOTE On some low AC and DC voltage ranges with the test leads not connected to a device the display may show a random changing reading This is normal and is cau...

Page 12: ...on it will turn off DATA HOLD BUTTON The Data Hold function allows the meter to freeze a measurement for later reference 1 Press the DATA HOLD button to freeze the reading on the indicator The indicat...

Page 13: ...n the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch to the V DC position mV will appear in the display 2 Insert the black test...

Page 14: ...e circuit under test 4 Read the voltage in the display The display will indicate the proper decimal point value and symbol AC V etc DC CURRENT MEASUREMENTS CAUTION Do not make current measurements on...

Page 15: ...electric shock do not measure AC current on any circuit whose voltage exceeds 250V AC CAUTION Do not make current measurements on the 10A scale for longer than 30 seconds Exceeding 30 seconds may caus...

Page 16: ...to the negative side of the circuit And touch the red test probe tip to the positive side of the circuit 6 Apply power to the circuit 7 Read the current in the display The display will indicate the pr...

Page 17: ...of the part under test so the rest of the circuit will not interfere with the resistance reading 4 Read the resistance in the display The display will indicate the proper decimal point value and symb...

Page 18: ...nana plug into the positive jack 4 Touch the test probe tips to the diode or semiconductor junction you wish to test Note the meter reading 5 Reverse the probe polarity by switching probe position Not...

Page 19: ...value CAPACITANCE MEASUREMENTS WARNING To avoid electric shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements Remove the batteries and...

Page 20: ...K thermocouple probe black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Temp jack 3 Touch the Temperature Probe head to the part whose temperatu...

Page 21: ...on section of this manual 3 Dispose of the old battery properly WARNING To avoid electric shock do not operate your meter until the battery door is in place and fastened securely BATTERY INSTALLATION...

Page 22: ...oltage before removing the fuse door 1 Disconnect the test leads from the meter and any item under test 2 Open the fuse door by loosening the screw on the door using a Phillips head screwdriver 3 Remo...

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