INSTRUCTION MANUAL - Mor Electric Heating Assoc., Inc.
Contents
1. 2 Isolate the capacitor by lifting at least one of its two legs away from the circuit 3 Select the capacitance position 4 on the rotary function switch 4 Connect the red test lead to one side of the capacitor and the black to the other 5 Read the measured value Note In the autoranging mode it takes approximately 10 seconds to settle on a value for a capacitor Larger capacitors require even more time In the manual rangng mode measurements are often faster Measuring Resistance Resistance is the measure of a component s or circuit s tendency to oppose current flow Because of the many factors that affect resistance the most accurate measurements are made when components under test are isolated from other components or circuits It is critical to the accuracy of the measurement that you remove all power to the circuit when making resistance measurements If the component or circuit cannot be isolated turn off all power sources and discharge all in circuit capacitors before attempting the measurement This meter may be damaged if more than 600 volts are present Note When measuring critically low ohm values touch the tips of the test leads together and record the reading Subtract this value from the total resistance of the circuit under test to obtain the actual value For resistance measurements above one Megohm the display might take a few seconds to stabilize This is normal for high resistance readings Th2. Frequency of oscillation Frequency freq Cycles per second Cycles CPS Hz Note When measuring frequency your meter must be connected in parallel to the circuit or circuit element under test To measure frequency plug in the test leads as instructed then 1 Turn on the multimeter 2 Select the Hz position on the rotary function switch 3 Connect the test leads across the circuit to be tested 4 Read the measured frequency on the display Measuring Amps Current flow is measured in amperes or amps which indicates the volume of electrons that pass through a given point When taking current measurements this meter must be connected in series with the circuit or circuit element under test CAUTION Never connect the test leads across in parallel with a voltage source when attempting to measure current This can cause damage to the circuit under test or this meter Note To measure current you must create a break in the circuit under test and make the meter part of the circuit Two connection points are created when a circuit is broken On one side is the power source and the other is the load DM384 MAN To measure AC or DC current flow in amps insert the test leads into the meter as instructed then Ensure power is off to the circuit to be tested p Turn the meter on w Select the AC or DC amp position on the rotary function switch Break the circuit as described
3. MIN MAX push button is pressed This feature allows the meter to display the highest and lowest numerical value obtained in the selected measurement function you may prefer to manually select your range as the autorange feature is automatically overridden at the moment the button is pressed and the meter locks into whatever range is active When this feature is active you can cycle through your display options by briefly pressing the MIN MAX push button As you cycle through the options one of the following will appear on the screen MAX When displaying the maximum recorded value MIN When displaying the minimum recorded value MIN MAX flashing When displaying real time measurements while recording Cycling through these options will not affect the data stored in memory Note If the auto power off function activates during recording the stored MIN MAX information is retained when the meter is reactivated however recording does not continue while it is in the sleep mode To cancel recording press the MIN MAX push button for approximately one full second or select another range or function using the range button or rotary dial DM384 MAN Range Selection This meter is autoranging by default but can be set to any available range that the user desires To manually select a range briefly press the RANG BACKLIGHT push button The autoranging icon AUTO will disappear from the screen and th
4. position Amps readings do Proper switch position Ensure switch is in proper AC or DC amps position ACA or DCA This unit contains no user serviceable parts beyond those listed in the table In the event your instrument is physically damaged or does not function properly after taking the listed action please return the instrument to UEi following the warranty and service instructions Specifications Frequency Hz 1 Hertz minimum to 400 Megahertz maximum ACV at 50 to 500 hertz 750 V CAT I1 600 V CAT MI DV 1000 V CATH 600 V CAT TII DC mV 400 Millivolts Continuity 4000 Tone sounds at approximately 300 or less Diode Test H 3 V DC voltage drop Resistance Ohms M 40M Capacitance 40 000 Microfarads DC pA Center left port 400 Micro amps DC mA Center left port 400 Micro amps DC 10A Far left port 10 Amps AC WA Center left port 400 Micro amps AC mA Center left port 400 Milliamps AC 10A Far left port 10 Amps parts specified Physical Specifications Note When servicing the meter use only the replaceable Maximum voltage 600 V CAT Ill on ground terminal 1000 V CAT II Numerical digital display 0 87 3 3 4 digit 4000 count updates 4 times per second Analog bar graph 42 segment updates 20 times per second Storage temperature A to 140F 20 to 60 C not work Proper test lead Ensure the
5. 0 001 or 1 x 10 1 Micro 0 000001 or 1 x 109 1 Nano 0 000000001 or 1 x 10 NOTE When OL is displayed it indicates the value measured exceeds the limits of the selected range or exceeds the over all limits of the meter 14 The Analog Bar graph provides a fast responding updates 20 times per second volumetric indication of the input value This feature is designed to react like the analog display of a needle movement meter 15 The Range Indicators identify the maximum value that can be displayed either numerically or by the bar graph in the presently selected range 16 The Negative polarity indicator for the analog bar graph appears when the meter is reading a negative DC voltage or current 7 8 9 0 1 2 Nuanua DM384 MAN Operating Instructions Functional Description The DM384 is designed to make basic electrical measurements quickly and easily Its autoranging functions are augmented by range and function information that appears on the LCD display Its extra large backlit numerical display is designed to be monitored from a distance while its fast responding analog bar graph allows you to monitor rapidly or constantly changing input signals This is a 4000 count autoranging digital multimeter that employs high input impedance equal to or greater than 10 M0 to ensure accurate measurement readings and circuit isolation for digital and analog devices The auto ranging fe
6. red test lead is port position plugged into the appropriate amps port Blown fuse Replace blown fuse DM384 MAN Temperature coefficient Operating temperature 37 to 1S F 0 t0450 Altitude 6560 2000 M 0 to 80 at 32 to 95 F Relative humidity 0 to 350 0 to 70 at 95 to 113F 35 to 45 C 0 1 x specified acurag C when ambient temperature is lt 64F of gt 82 F IBC or gt 2810 Battery type OV NEDA 1604 or 6LR 61 Battery life typical 80 hours alkaline Size HxWxL in THN STE x 27 Weight approximate 21 1 oz 600 g Drop test w ECO 600 Volts overvoltage categorylll Safety standards 1000 Volts overvoltagecategoryll and the EMC directive General Specifications These specifications are based on an instrument operating in an ambi ent temperature of 5 to 90 degrees Fahrenheit at a relative humidity of less than 80 which is within one year of calibration The accuracy column indicates the percent of possible error based on the reading displayed plus an additional allowance for drift based on the value of the least significant digits of the selected range This is stat ed as N N digits Frequency Hz 4kHz 40kHz 400kHz 0 5 reading 2 digits 4MHz 40MHz 400mHz AC Volts A00mV 4V 40V 400V 1 5 reading 5 digits 750V Dc Volts 400mV 4V 40V 0 5 reading 3 digits 400V 1000V DC mV 400mV 0 5 readi
7. Batteries and consequential damage resulting from failed batteries are not covered by warranty Any implied warranties including but not limited to implied warranties of merchantability and fitness for a particular purpose are limited to the express warranty UEi shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss or for any claim or claims for such damage expenses or economic loss A purchase receipt or other proof of original purchase date will be required before warranty repairs will be rendered Instruments out of warrantywill be repaired when repairable for a service charge Return the unit postage paid and insured to 1 800 547 5740 FAX 503 643 6322 www ueitest com Email info ueitest com This warranty gives you specific legal rights You may also have other rights which vary from state to state PLEASE lt RECYCLE Copyright 2007 UEi DM384 MAN 1 07
8. Place a fresh 9V battery in the battery clip 8 Reassemble the meter lt lt lt s q r N i M View of meter face down with back cover off 1 Battery 2 P CB 3 Test lead ports 4 Fuses under PCB DM384 MAN TN isa Disconnect the test leads from the circuit under test and from the meter Prior to removing or installing fuses Replace the bottom fuse with the fuse specified for this meter ONLY To replace a blown fuse perform the following procedures 1 Turn off the meter 2 Remove the rubber boot from the meter starting at the top Place meter face down on a clean cloth p Remove the screws from the rear case Two machined screws fasten the bottom and two self tapping screws fasten the top gt bal Separate the two halves Lift the entire printed circuit board PCB housing up and away from the front half of the meter Lift the PCB housing straight up as there are metal cylinders inside the test lead insulators that must slide out with it x Turn the housing over to expose the fuses P Check to ensure the fuse is bad by confirming that there is no continuitybetween the metal caps Note If the fuse is good check for corrosion at the fuse clips and ensure clips are tight around the fuse 9 Insert a new fuse or reinsert the good one 10 Reassemble the meter Or eS 2 TAN Q x et Co CI o View of PCB housing face up wit
9. ates that the HOLD button has been pressed and the display is no longer updating numerical data 8 The Autoranging icon indicates that the meter is in the autoranging mode and will automatically select the range that offers the best resolution for the signal being measured 9 The MAX icon indicates that the MIN MAX button has been pressed once and the meter is displaying the maximum value reached from the time the record mode was selected 10 The MIN icon indicates that the MIN MAX button has been pressed a second time and the meter is displaying the minimum value reached from the time the record mode was selected NOTE If both MIN and MAX are displayed and flashing then recording is active while real time measurements are displayed P 2 11 The Diode Symbol indicates that diode testing has been selected 12 The Audible Continuity icon indicates that the continuity mode has been selected 13 The following symbols represent the type and value of measurement being made Symbol Function or Value Hertz frequency in cycles per second Volts AC Volts DC Millivolts DC Ohms and Audible Continuity Diode Test Voltage Drop Ohms resistance value Capacitance in farads Direct Current or voltage Alternating Current or voltage Micro amps Milliamps Amps 1 Meg 1 000 000 or 1 x 109 1 Kilo 1 000 or 1 x 10 1 Milli
10. ature can be over ridden to allow manual range selection Minimum and maximum input values can be recorded at the operator s option The input ports use standard four millimeter insulated plug test leads provided Maximum measurement values are 1000 Volts CAT II or 600 V AC DC CAT III and 10 amps AC or DC Meter Power The DM384 is powered on and off using the push button on the far left which is marked with the international on off symbol Q This instrument will automatically enter a sleep mode commonly referred to as auto power off when left on for more than 30 minutes with no activity To identify that the auto power off function is active an icon appears an A within a box on the left side of the display along with other on screen information Immediately prior to automatically shutting off three sets of two beeps will sound at approximately five second intervals After five more seconds a final long duration tone will sound as the display goes blank If you do not want the meter to turn off at this time press the RANG BACKLIGHT push button before the final tone sounds to reset the 30 minute time out counter When the auto power off function takes effect the last value measured is stored allowing you to review that measurement upon reactivating the meter Press one of the three function buttons other than power to reactivate the meter The HOLD icon and the last measurement will be displayed To di
11. e range will be locked into that which was last in use To change ranges repeatedly press the button to cycle to the desired range displayed on the small numerical range indictor below the measured value indiators To return to autoranging press and hold the RANG BACKLIGHT push button for approximately one full second Backlight This meter uses an electro luminescent E L backlight to provide easy to read data in low light areas Although E L lighting consumes less energy than incandescent backlighting it is still one of the major sources of battery drain in your meter For longer battery life use it only as necessary To turn the backlight on and off press and hold down the RANG BACKLIGHT push button until its blue glow appears of disappears as desired Two beeps will be heard relating to the RANGE function prior to the light coming on Note The backlight cycles on or off approximately 1 2 second after the tone sounds its second beep Rotary Switch The rotary switch is used to select the measurement function and in some cases range Once a function has been selected the meter will automatically seek the range autoranging that offers the best resolution for the incoming signal This eliminates the need for numerous switch positions and keeps your measurements fast and easy However there are multiple switch positions provided for some functions to separate the ranges into groups that will take advantage
12. e voltage or current applied during resistance measurements could damage some extremely sensitive electronic devices Typically the voltages present at the test leads when making resistance measurements range from 3 volts at 1 5 mA in the lowest range to 5 volts at lt 1pA in the highest range To measure the voltage drop on diodes plug in the test leads as instructed then Turn off the meter N Select the diode test function on the rotary function switch Connect the red test lead to the anode side of the diode and the black to the cathode Note There is normally a printed black band around the cathode of a standard diode w a Note the displayed value p j Reverse the red and black test leads Again note the displayed value If the digital reading in the first forward biased direction indicates some measurable value and the reading in the reverse biased direction shows an over range OL the diode is probably good 2 DM384 MAN 7 If the displayed value is low or all zeros in both directions the diode id probably shorted 8 If the display indicated an overload OL in both directions the diode is probably open burned out Note Some diodes such as those used in microwave ovens require a higher biasing voltage than this meter supplies See UEi s catalog for an economical high power diode test lead adapter set if necessary Measuring Continuity Continuity is the meas
13. earlier and connect the meter leads to the points created by the break y Apply power to the circuit 6 Read your measurement value Note When performing flame safeguard testing a low DC amperage test on some gas furnace models an adapter sold by UEi can be placed in line with the flame sensor to make testing fast and easy Note When measuring DC current A minus sign will be displayed if the current is flowing opposite to the connection polarity Note As a safety discipline disconnect power to the circuit under test before removing either test lead Maintenance Periodic Service Niina Repair and service of this instrument is to be performed by qualified personnel only Improper repair or service could result in physical degradation of the meter This could alter the protection from electrical shock and personal injury this meter provides to the operator Perform only those maintenance tasks that you are qualified to do These guidelines will help you attain long and reliable service from your meter Calibrate your meter annually to ensure it meets original performance specifications Keep your meter dry If it gets wet wipe dry immediately Liquids can degrade electronic circuits Whenever practical keep the meter away from dust and dirt that can cause premature wear Although your meter is built to withstand the rigors of daily use it can be damaged by severe impacts Use reasonable caution when using and stor
14. h cover off 1 P 2 12A 250V Fuse 3 0 5A 660V Fuse If See Thi 1 Should Then Take This Malfunction Check For Corrective Action Troubleshooting Instrument does not Battery voltage Replace low battery turn on On Off switch Ensure button moves freely position and is in the on position Instrument turns on Took for MAX HOLD icons but LCD indicates MAX button pressed displayed on the LCD some unreasonable or HOLD button pressed Turn off one or unchanging value both buttons A value appears on Short test Teads together screen with no input If a value near 000 appears applied Stray voltage instrument is OK Move meter and Teads away from devices that create electrical fields A known value is not displayed on the LCD when measured MAX and HOLD buttons pressed Turn off one or both buttons check for icons on LCD Bad test lead connections Ensure test leads are fully inserted and free of corrosion or dirt Defective test leads Short test leads together in the 400 ohm scale Expect less than 50 is unstable Battery voltage Replace low battery Offset rotary Ensure knob is firmly placed Meter reading selector knob in switch position Bad test lead contacts Ensure there is no insulating material dirt or debris at contact points No audible tone with near zero resistance value Improper selector position Tone sounds only in continuity mode Place selector in
15. ing the meter Cleaning Periodically clean your meter s case using a damp cloth DO NOT use abrasive flammable liquids cleaning solvents or strong detergents as they may damage the finish impair safety or affect the reliability of the structural components Battery Replacement Always use a fresh replacement battery of the specified size and type Immediately remove the old or weak battery from the meter and dispose of it in accordance with your local disposal regulations Batteries can leak chemicals that corrode electronic circuits If your meter is not going to be used for a month or more remove and store the battery in a place that will not allow leakage to damage other materials Numina Disconnect the test leads from the circuit under test and from the meter prior to removing or installing batteries To install a new battery follow these procedures Turn off the meter N Remove the rubber boot from the meter starting at the top Place meter face down on a clean cloth w Remove the screws from the rear case Two machined screws fasten the bottom and two self tapping screws fasten the top a p Separate the two halves to expose the battery gt j Remove and discard the old battery Always dispose of old batteries promptly in a manner with local disposal regulations Lis Under no circumstances should you expose batteries to extreme heat or fire as they may expose and cause injury 7
16. ng 3 digits Resistance 400 4k 40k 1 0 reading 3 digits 400k 4M 40M 3 0 reading 7 digits Capacitance nF 40nF 400nF 4pF _ 3 0 reading 4 digits 40uF 400pF 4 000pF 40 000pF DC pA 40pA 4000 1 0 reading 3 digits DC mA AOMA 400mA 1 0 reading 3 digits DC 10A 10A 2 5 reading 3 digits AC HA A0pA 400K 2 006 reading 5 digits AC mA AOMA 400MA 2 0 reading 5 digits AC TOA T0A 3 0 reading 5 digits AC Volts and Current specified for frequency ranges between 50 and 500 Hertz Standard and Optional Accessories Standard Fest Leads sit ecenieet baryeri tediwhenseagd ATL55 Optional AC DC Clamp Adapter 400 amp CA30 AC DC Clamp Adapter 1000 amp CA40 Soft carrying case ACC3I5 Hard carrying case AC506 Flame safeguard test kit ATLFSG Microwave diode booster test lead Temperature probe adapter s 2s ssszsaaii i DM384 MAN Digital Multimeter Limited Warranty The DM384 is warranted to be free from defects in materials and workmanship for a period of five years from the date of purchase If within the warranty period your instrument should become inoperative from such defects the unit will be repaired or replaced at UEi s option This warranty covers normal use and does not cover damage which occurs in shipment or failure which results from alteration tampering accident misuse abuse neglect or improper maintenance
17. ngs are observed disconnect power immediately and recheck all settings and connections Safety Notes Before using this meter read all safety information carefully In this manual the word WARNING is used to indicate conditions or actions that may pose physical hazards to the user The word CAUTION is used to indicate conditions or actions that may damage this instrument Do not attempt to measure any voltage that exceeds the categorybased rating of this meter Do not attempt to use this meter if either the meter or the test leads have been damaged Turn it in for repair at a qualified repair facility Ensure meter leads are fully seated by making a quick continuity check of the leads prior to making voltage measurements Keep your fingers away from the test lead s metal probe contacts when making measurements Always grip the leads behind the finger guards molded into the probes Use a current clamp adapter when measuring current that may exceed 10 amps See the accessories in UEi s full line catalog Do not open the meter to replace batteries or fuses while the probes are connected International Symbols AC TE Alternating Current A Warning or Caution b Double Insulation Direct Current Protection Class Il Not Applicable to Identified Model Battery DM384 MAN P 1 Contrds and Indicators Digital Display Readings are displayed on a digital 4000 count display along with the appropriate polarit
18. of circuit technology that offers superior accuracy While this meter is manufactured with a number of built in fail safes the potential to damage the meter blow a fuse or cause damage to a circuit under test due to improper use does exist Set the rotary function select switch to the appropriate setting before connecting test leads or applying power to circuits under test Also be sure the test leads are in the proper jacks for the function you have selected Measuring Capacitance This meter measures capacitors such as those used as motor run start capacitors and electronic control card circuitry ranging in value from 001 nanofarad to 40 000 microfarads uf varni Capacitors should be completely discharged prior to testing Some electronic devices use capacitors in circuits that are designed to increase voltage Be design a capacitor stores energy If a capacitor has been charged at greater than 600 volts attempting to measure it may damage your meter Larger capacitors may store enough energy to cause injury if they are discharged through the body Use a conductive device to dissipate the charge on capacitors Large capacitors should be bled by using a resistive load between terminals to slowly eliminate the charge Smaller capacitors may be directly shorted using a metallic object To make capacitance measurements plug in the test leads as instructed then 1 Discharge the capacitor to be tested as prescribed above
19. ot know the maximum value of the voltage to be measured use the DCV position and allow the meter to auto range 3 Connect the test leads across the test points of the circuit to be tested 4 Read the measured voltage on the display Note If the voltage on the red test lead is lower more negative than that on the clack test lead the negative polarity symbol a minus will appear on the left of the display Measuring AC Voltage N wanna To avoid the risk of electrical shock and instrument damage input voltages must not exceed the limits specified for the installation category you are working in DO NOT attempt to take any unknown voltage measurements that may exceed these values Note When taking voltage measurements your meter must be connected in parallel to the circuit element under test To measure AC volts plug in the test leads as instructed then 1 Turn off the meter 2 Select the AC volt ACV position on the rotary function switch Ifyou do not know the maximum value of the voltage to be measured within this meter s category specific rating allow the meter to auto range 3 Connect the test leads across the test points of the circuit to be tested 4 Read the measured voltage on the display Measuring Hertz Frequency Hz Use the Hertz function to determine the frequency of main power generators inverters and electronic circuits Different terms are used to describe Hertz Some of these are
20. s b E E AUTO POWER OFF AX S00mA FUSED 1 800 547 5740 Fax 503 643 6322 www ueitest com email info ueitest com Introduction The DM384 gives you advanced troubleshooting technology for challenging tasks It has numerous high end features like MIN MAX capture for unattended measurement monitoring capacitance for checking run start capacitors and frequency for quick verification of generdors inverters and control circuit operation The large LCD display has an electro luminescent backlight for easy viewing at a distance The DM384 s combination of durability visibility and functionality are specificdly tailored to meet the expanding needs of today s HVAC R technicians plant maintenance professionals appliance technicians and electrician s The DM384 is handheld and battery powered It is designed and tested to IEC 1010 1 EN61010 1 standards the EMC directive and other safety standards It is rated to measure up to 1000 volts in a CAT II environment and up to 600 volts AC and DC in a CAT III environment Features include 750 volts AC and 1000 Volts DC 10 Amps AC and DC 01 pA DC resolution for flame safeguard circuit testing Frequency to 40 MHz Capacitance to 40 000 microfarad Resistance to 40 Megohms Analog bar graph Continuity Diode check function Autoranging Large backlit LCD display Low battery indicator AN wanne Exceeding the
21. sable the auto power off function allowing constant monitoring or recording press and hold down the MIN MAX or RANG BACKLIGHT button while initially turning on the meter The auto power off icon A will no longer be visible NOTE The sleep mode only reduces battery drain Do not store your meter without verifying that power is turned off at the switch Selecting the Proper Test Lead Ports The test leads must be plugged into the proper ports to make electrical measurements Press the test lead plugs firmly into the meter ports to ensure they are fully seated The black test lead will be plugged into COM For all measurements The red test lead will be plugged into VOHz4 For testing volts AC or DC ohms continuity gt diodes capacitance and frequency pA mA For testing amps AC or DC with values below 400 milliamps 10A For testing amps AC or DC with values up to not exceeding 10 amps Hold The HOLD push button freezes the numerical data displayed on the LCD at the moment it is pressed To engage data hold press the HOLD push button located on the right side on the face of the instrument When this function is active the word HOLD appears on the left side of the digital display To cancel data hold press the HOLD button again The numerical value will remain displayed even if the rotary dial is moved from its original position MIN MAX Recording Recording is initiated when the
22. specified limits of this meter is dangerous and can expose the user to serious or possibly fatal injury Voltages above 60 volts DC or 25 volts AC may constitute a serious shock hazard Always turn off power to a circuit or assembly under test before cutting unsoldering or breaking the current path Even small amounts of current can be dangerous Always disconnect the live test lead before disconnecting the common test lead from a circuit In the event of electrical shock ALWAYS bring the victim to the emergency room for evaluation regardless of the victim s apparent recovery Electrical shock can cause an unstable heart rhythm that may need medical attention Higher voltages and currents require greater awareness of physical safety hazards Before connecting the test leads turn off power to the circuit under test set the meter to the desired function and range connect the test leads to the meter first then to the circuit under test Reapply power If any of the following indications occur during testing turn off the power source to the circuit under test Arcing Flame Smoke Extreme Heat Smell of Burning Materials Discoloration or Melting of Components N canon Do not attempt to rem ove the meter leads from the circuit under test The leads the meter or the circuit under test may have degraded to the point that they no longer provide protection from the voltage and current applied If any of these erroneous readi
23. surements on the rotary dial Remember amperage measurements are made in series with your circuit This Symbol Reminds the User to Follow Provided Instructions See Caution in the international symbol section of this manual Microamp Milliamp Input Terminal The red test lead is plugged into this terminal when measuring current AC or DC in the 400 mA and below range Common Terminal The black test lead is plugged into this terminal and supplies the ground or low reference for all Measurements Flash Symbol Warns operators that potentially dangerous voltages may be present Use caution when making high voltage measurements Multifunctional Volts Ohms and Diode Test Input Terminal Use the red test lead in this terminal for any of these test functions Multifunctional Terminal Information In dics the maximum input values and categoryratings established by IEC 1010 1 DM384 MAN LCD Display Functional Description 1 The main numerical display indicates measured numerical values 2 The Auto Power Off icon indicates that the sleep mode function is active 3 The DC icon indicates the meter is reading DC voltage or current 4 Indicates a negative polarity measurement Applicable to DC functions 5 Indicates the meter is reading AC voltage or current 6 The Low Battery icon indicates the battery is low and must be changed immediately 7 The HOLD icon indic
24. ure of a circuit or component s ability to conduct electricity Use this mode to make quick checks for continuity good connections in electrical circuits such as wiring speaker cables switches or relays In the continuity mode an audible tone sounds when the value measured is approximately 300 or less The resistance of the circuit up to 400 ohms is displayed regardless of the continuity tone To measure continuity plug in the test leads as instructed then 1 Turn off the meter 2 Select the continuity test function on the rotary function switch 3 Place one probe to each side of the circuit to be tested If the circuit measures approximately 300 or less the meter will sound a continuous tone Measuring DC Voltage Minna To avoid the risk of electrical shock and instrument damage input voltages must not exceed the limits specified for the installation category you are working in DO NOT attempt to take any unknown voltage measurements that may exceed these values Note When taking voltage measurements your meter must be connected in parallel to the circuit or circuit element under test To measure DC volts plug in the test leads as instructed then 1 Turn off the meter 2 Select the DCV or DCm function on the rotary function switch The DCV position can be used for any DC voltage measurement The DCmV position is ideal for DMM accessories that have a DC millivolt output Ifyou do n
25. y indication and range and function enunciators icons The decimal point moves automaticly in the autoranging mode and remains in place when recording or when the range is manually selected Power Push button Used to turn the power to the meter on or off MIN MAX Push button Causes the meter to record and display the maximum or minimum value of any function selected The word MIN or MAX appears in the upper right of the LCD This feature resets when the selector is moved or the meter is cycled off Hold Push button Freezes the reading presently on the digital display and displays the words DATA HOLD on the left side of the LCD To cancel data hold press the DATA HOLD button again This feature resets only when the push button is pressed a second time not when the selector is moved Range and Backlight Push button Press briefly until a single beep is heard less than one second to lock the meter in a range or to step through ranges To turn on or off the backlight press and hold for two seconds illuminates shortly after the second beep is heard Rotary Switch Allovs you to switch between any of the functions or values indicated by the numbers icons and group outlines printed around the rotating dial 7 10 Amp Fused Meter Lead Terminal Use this input terminal port when measuring amps greater than 400 mA but less than 10 Amps AC or DC Use caution when selecting amperage mea
Download Pdf Manuals
Related Search