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Good Will GDM-360 User Manual - Note

Summary of GDM-360

  • Page 1

    Handheld digital multimeter gdm-360, gdm-397, gdm-398, gdm-461 user manual gw instek part no. 82dm-46100ma1 iso-9001 certified manufacturer.

  • Page 2

    This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent. The information in this manual was correct at the time of printing. However, ...

  • Page 3

    Table of contents 1 table of contents o verview............................................................................................................................. 4 unpacking inspection ...........................................................................................................

  • Page 4

    Gdm-360/397/398/461 user manual 2 max min button (gdm-360/397/398 only) ................................................................................. 42 peak hold (gdm-461 only) ............................................................................................................ 42 output...

  • Page 5

    Table of contents 3 replacing the fuses ........................................................................................................................ 71 usb and rs232c serial port ........................................................................................................... 7...

  • Page 6: Warning

    Overview 4 o verview this user manual covers information on safety and cautions. Please read the relevant information carefully and observe all the warnings and notes. Warning to avoid electric shock or personal injury, read the “safety information” and “rules for safe operation” carefully before us...

  • Page 7

    Gdm-360/397/398/461 user manual 5 unpacking inspection open the package case and take out the meter. Check the following items carefully to see if there are any missing or damaged parts: item description qty 1 user manual 1 piece 2 test lead 1 pair 3 k-type temperature probe (thermocouple) (gdm-397 ...

  • Page 8

    Overview 6 safety information this meter complies with the en61010-1 and en61010-2-030 standards: in pollution degree 2, overvoltage category (cat. Iii 1000v, cat. Iv 600v) and double insulation. Cat iii: distribution level, fixed installation, with smaller transient overvoltages than cat. Iv. Cat i...

  • Page 9: Warning

    Gdm-360/397/398/461 user manual 7 rules for safe operation warning to avoid possible electric shock or personal injury, and to avoid possible damage to the meter or to the equipment under test, adhere to the following rules: before using the meter inspect the case. Do not use the meter if it is dama...

  • Page 10

    Overview 8 use the proper terminals, function, and range for your measurements. Do not use or store the meter in an environment with high temperature, humidity, explosives, inflammable materials or strong magnetic fields. The performance of the meter may deteriorate when dampened. When using the tes...

  • Page 11

    Gdm-360/397/398/461 user manual 9 a soft cloth and mild detergent should be used to clean the surface of the meter when servicing. No abrasives and solvents should be used to prevent the surface of the meter from corrosion or damage. The meter is suitable for indoor use. Turn the meter off when it i...

  • Page 12

    Overview 10 the meter structure (see figure 1) 1. Lcd display 1 2 3 4 5 6 2. Functional buttons 3. Yellow button 4. Blue button 5. Rotary switch 6. Input terminals: figure 1.

  • Page 13

    Gdm-360/397/398/461 user manual 11 rotary switch the table below describes the relevant functions of each of the rotary switch positions. Rotary switch position function v , mv ac and dc voltage measurement v ac voltage measurement (gdm-360 only) v dc voltage measurement (gdm-360 only) Ω resistance ...

  • Page 14

    Overview 12 functional buttons the table below describes what operations are performed for each of the buttons. Button operation performed light (except gdm-461) press and hold for 2 seconds to turn the display backlight on or off. Hold press to enter or exit data hold mode. Blue button press to sel...

  • Page 15: Hfe

    Gdm-360/397/398/461 user manual 13 *note: for the gdm-398, holding the rel key 2 seconds will also display the data output symbol, however the gdm-398 has no data output capability and thus this symbol can be ignored. Peak (gdm-461) press to step the display through pmax and pmin readings. Press and...

  • Page 16

    Overview 14 11 the continuity buzzer is on. 12 max/min maximum and minimum reading. 13 data output is in progress. Note: this symbol has no function on the gdm-398 and should be ignored. 14 the battery is low. Warning: to avoid false readings, which could lead to possible electric shock or personal ...

  • Page 17

    Gdm-360/397/398/461 user manual 15 mf: milli-farad. 1 x 10 -3 or 0.001 farads µf: microfarad. 1 x 10 -6 or 0.000001 farads. Nf: nanofarad. 1 x 10 -9 or 0.000000001 farads ˚c, ˚f ˚c: centigrade. The unit of temperature. ˚f: fahrenheit. The unit of temperature. Hz, khz, mhz hz: hertz. The unit of freq...

  • Page 18: Note

    Measurement operation 16 m easurement operation a. Dc/ac voltage measurement (see figure 2) v gdm-360/397/398 av gdm-461 figure 2 note the gdm-360 doesn’t have an ac/dc voltage range (v ). It does, however, have an ac/dc mv range (mv ) and separate ac and dc voltage ranges (v , v )..

  • Page 19: Warning

    Gdm-360/397/398/461 user manual 17 warning to avoid injury to your person or damage to the meter from electric shock, please do not attempt to measure voltages higher than 1000v, although readings may be obtained. When measuring high voltage, take extra care to avoid electric shock. 1. Insert the re...

  • Page 20: Note

    Measurement operation 18 note in each range, the meter has an input impedance of 10mΩ except for the mv range which has an input impedance of 3000mΩ. This loading effect can cause measurement errors in high impedance circuits. If the circuit impedance is less than or equal to 10kΩ, the error is negl...

  • Page 21

    Gdm-360/397/398/461 user manual 19 b. Dc/ac current measurement (see figure 3) a gdm-360/397/398 a gdm-461 figure 3.

  • Page 22: Warning

    Measurement operation 20 warning before connecting the meter to the return circuit to be tested, cut off the current of the return circuit. If the fuse burns out during measurement, the meter may be damaged or the operator may be hurt. Use the proper terminals, function, and range for each measureme...

  • Page 23: Note

    Gdm-360/397/398/461 user manual 21 gdm-360/461: displays the true rms value. 5. Press hz% (gdm-360/397/398) or the yellow button (gdm-461)to obtain the frequency and duty cycle value. Input amplitude: (dc offset is zero) input amplitude:≥range×30% frequency response:gdm-397/398: ≤400hz, gdm-360/461:...

  • Page 24

    Measurement operation 22 c. Resistance measurement (see figure 4) maua com vΩhz figure 4.

  • Page 25: Warning

    Gdm-360/397/398/461 user manual 23 warning to avoid damaging the meter or the dut, disconnect power from the circuit and discharge all high-voltage capacitors before measuring resistance. To avoid harm to yourself, do not input voltages greater than dc 60v or ac 30v. To measure resistance, connect t...

  • Page 26: Note

    Measurement operation 24 note the test leads can add 0.2Ω to 0.5Ω of error to the resistance measurement. To obtain precise readings for low-resistance measurements, short the leads beforehand to obtain the resistance of the test leads and use the relative measurement function button, rel , to autom...

  • Page 27

    Gdm-360/397/398/461 user manual 25 d. Testing for continuity (see figure 5) figure 5.

  • Page 28: Warning

    Measurement operation 26 warning to avoid damage to the meter or to the device under test, disconnect the circuit power and discharge all high-voltage capacitors before testing for continuity. To avoid harm to yourself, do not input voltages greater than dc 60v or ac 30v. To test for continuity, con...

  • Page 29

    Gdm-360/397/398/461 user manual 27 e. Testing diodes (see figure 6) figure 6.

  • Page 30: Warning

    Measurement operation 28 warning to avoid possible damage to the meter and to the device under test, disconnect the circuit power and discharge all high-voltage capacitors before testing diodes. To avoid harm to yourself, do not input voltages greater than dc 60v or ac 30v. 1. Insert the red test le...

  • Page 31

    Gdm-360/397/398/461 user manual 29 connect the test leads to the proper terminals as said above to avoid errors. The lcd will display ol to indicate that the diode being tested is open or that the polarity is reversed. The meter will display the forward voltage drop in voltage (v) units. When diode ...

  • Page 32

    Measurement operation 30 f. Capacitance measurement (see figure 7) maua vΩhz figure 7.

  • Page 33: Warning

    Gdm-360/397/398/461 user manual 31 warning to avoid damage to the meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacitor is discharged. To measure capacitance...

  • Page 34: Note

    Measurement operation 32 3. Connect the test leads to the dut. The measured value shows on the display. Note it takes a longer time to measure a capacitance of more than 100μf. The lcd displays ol to indicate that the tested capacitor is shorted or it exceeds the maximum range. When capacitance meas...

  • Page 35: Warning

    Gdm-360/397/398/461 user manual 33 g. Frequency measurement (see figure 8) gdm-360/397/398 gdm-461 figure 8 warning to avoid personal harm, do not attempt to input more than 30v rms when testing frequency. To measure frequency, connect the meter as follows: 1. Insert the red test lead into the hz te...

  • Page 36: Note

    Measurement operation 34 2. Set the rotary switch to hz%; frequency measurement is set to (hz) as default, otherwise press the hz% button (gdm-360/397/398) or the yellow button (gdm-461) to select hz measurement mode. 3. Connect the test leads to the dut. The measured value shows on the display. 4. ...

  • Page 37

    Gdm-360/397/398/461 user manual 35 h. Temperature measurement (gdm-397 only) (see figure 9) figure 9.

  • Page 38: Warning

    Measurement operation 36 warning to avoid harm to yourself, do not input higher than dc 60v or ac 30v voltages. To measure temperature, connect the meter as follows: 1. Set the rotary switch to ˚c or ˚f 2. Insert the temperature probe into the input terminal as shown on the figure 9. 3. Place the te...

  • Page 39

    Gdm-360/397/398/461 user manual 37 i. Transistor hfe measurement (gdm-398 only) (see figure 10) figure 10

  • Page 40: Note

    Measurement operation 38 1. Set the rotary switch to hfe. 2. Insert the multi-purpose socket into the input terminal as shown on figure 10. 3. Insert the transistor to be tested into the corresponding multi-purpose socket jacks. 4. The lcd will display hfe nearest value. Note when transistor measure...

  • Page 41

    Gdm-360/397/398/461 user manual 39 j. Ef function (gdm-398 only) (see figure 11) figure 11.

  • Page 42

    Measurement operation 40 to use the ef function, connect the meter as follows: 1. Set the rotary switch to ef and remove the test lead from the input terminals. 2. Place the front part of the housing with the marking towards the object being measured. 3. There will be three types of displays:  lcd ...

  • Page 43: Warning

    Gdm-360/397/398/461 user manual 41 hold mode warning to avoid possibility of electric shock, do not use hold mode to determine if circuits are without power. The hold mode will not capture unstable or noisy readings. The hold mode is applicable to all measurement functions. Press hold to enter holdm...

  • Page 44

    Measurement operation 42 range button press range to enter the manual ranging mode; the meter beeps. Press range to step through the ranges available for the selected function; the meter beeps. Press and hold range for over 2 seconds to return to auto ranging mode; the meter beeps. Max min button (g...

  • Page 45

    Gdm-360/397/398/461 user manual 43 press peak to step the display through peak max and peak min readings. Press and hold peak for over 2 seconds to exit peak mode, the lcd displays the present measurement values. Don’t press the”peak” key if the meter has entered “cal”mode. Outputting data (except g...

  • Page 46: Press Rel

    Measurement operation 44 the use of relative value mode the rel mode applies to all measurement functions except frequency/duty cycle measurement. It subtracts a stored value from the present measurement value and displays the result. For instance, if the stored value is 20.0v and the present measur...

  • Page 47: Warning

    Gdm-360/397/398/461 user manual 45 the blue button it is used for selecting the required measurement function when there is more than one function at one position of the rotary switch. Turning on the display backlight (gdm-360/397/398 only) warning in order to avoid mistakes arising from misread rea...

  • Page 48

    General specifications 46 g eneral specifications maximum voltage between any terminals and ground: refer to the different input ranges for the protection voltages. Fused protection for μama input terminal: 600mah 1000v φ6.35x31.8mm. Fused protection for 10a input terminal: 10a h 1000v φ10.3x38.1mm....

  • Page 49

    Gdm-360/397/398/461 user manual 47 overload indication: display ol battery deficiency: display temperature: operating: 0˚c to +40˚c (32˚f to +104˚f). Storage: -10˚c to +50˚c (14˚f to +122˚f). Relative humidity: ≤75% @ 0˚c ~ 30˚c below ≤50% @ 30˚c - 40˚c. Battery type: 9v (neda1604 or 6f22 or 006p). ...

  • Page 50

    General specifications 48 accuracy specifications accuracy: ±(a% reading + b digits), guaranteed for 1 year. Operating temperature：18˚c ~28˚c. Relative humidity: dc voltage gdm-397/398 range resolution accuracy input impedance fixed value input gdm-398 gdm-397 40mv 0.01mv ±(0.8%+3) around >3000mΩ 10...

  • Page 51

    Gdm-360/397/398/461 user manual 49 gdm-360 range resolution accuracy input impedance fixed value input 60mv 0.01mv ±(0.8%+3) around >3000mΩ 1000v dc/ac (vpp) 600mv 0.1mv ±(0.8%+3) 6v 0.001v ±(0.5%+1) around 10mΩ 60v 0.01v 600v 0.1v 1000v 1v ±(1.0%+3) gdm-461 range resolution accuracy input impedance...

  • Page 52

    General specifications 50 ac voltage gdm-397/398 range resolution accuracy 45~400hz input impedance fixed value input gdm-398 gdm-397 40mv 0.01mv ±(1.2%+5) around >3000mΩ 1000v dc/ 750vrms ac 400mv 0.1mv ±(1.0%+3) 4v 0.001v around 10mΩ 40v 0.01v 400v 0.1v 750v 1v ±(1.2%+5) displays effective value o...

  • Page 53

    Gdm-360/397/398/461 user manual 51 gdm-360 range resolution accuracy input impedance fixed value input 45~1khz >1khz~3khz 60mv 0.01mv ±(1.2%+5) ±(2.0%+5) around >3000mΩ 1000v dc/ 750vrms ac 600mv 0.1mv 6v 0.001v ±(1.0%+3) ±(1.5%+5) around 10mΩ 60v 0.01v 600v 0.1v 750v 1v ±(1.2%+5) ±(3.0%+5) gdm-360:...

  • Page 54

    General specifications 52 gdm-461 range resolution accuracy input impedance fixed value input 45~1khz >1khz~10khz 220mv 0.01mv ±(1.0%+10) ±(1.5%+50) around >3000mΩ 1000v dc/ 750vrms ac 2.2v 0.0001v ±(0.8%+10) ±(1.2%+50) around 10mΩ 22v 0.001v 220v 0.01v ±(2.0%+50) 750v 0.1v ±(1.2%+10) ±(3.0%+50) tru...

  • Page 55

    Gdm-360/397/398/461 user manual 53 dc current gdm-397/398 range resolution accuracy overload protection 400μa 0.1μa ±(1.0%+2) fuse 1: f600ma h 1000v,φ6.35 x 31.8mm 4000μa 1μa 40ma 0.01ma ±(1.2%+3) 400ma 0.1ma 4a 0.001a ±(1.5%+3) fuse 2: f10a h 1000v,φ10.3 x 38.1mm 10a 0.01a remarks: when ≤5a: contin...

  • Page 56

    General specifications 54 gdm-360 range resolution accuracy overload protection 600μa 0.1μa ±(1.0%+3) fuse 1: f600ma h 1000v,φ6.35 x 31.8mm 6000μa 1μa 60ma 0.01ma 600ma 0.1ma 6a 0.001a ±(1.2%+5) fuse 2: f10a h 1000v,φ10.3 x 38.1mm 10a 0.01a remarks: when ≤ 5a: continuous measurement is allowed. When...

  • Page 57

    Gdm-360/397/398/461 user manual 55 gdm-461 range resolution accuracy overload protection 220μa 0.01μa ±(0.5%+10) fuse 1: f600ma h 1000v,φ6.35 x 31.8mm 2200μa 0.1μa 22ma 0.001ma 220ma 0.01ma 10a 0.001a ±(1.2%+50) fuse 2: f10a h 1000v,φ10.3 x 38.1mm remarks: when ≤ 5a: continuous measurement is allowe...

  • Page 58

    General specifications 56 ac current gdm-397/398 range resolution accuracy 45hz~400hz overload protection 400μa 0.1μa ±(1.2%+5) fuse 1: f600ma h 1000v,φ 6.35 x 31.8mm 4000μa 1μa 40ma 0.01ma ±(1.5%+5) 400ma 0.1ma 4a 0.001a ±(2.0%+5) fuse 2: f10a h 1000v,φ10.3 x 38.1mm 10a 0.01a remarks: when ≤5a: con...

  • Page 59

    Gdm-360/397/398/461 user manual 57 gdm-360 range resolution accuracy overload protection 45~1khz 1khz~3khz 600μa 0.1μa ±(1.2%+5) ±(1.5%+5) fuse 1: f600ma h 1000v,φ 6.35 x 31.8mm 6000μa 1μa 60ma 0.01ma ±(1.5%+5) ±(2.0%+5) 600ma 0.1ma 6a 0.001a ±(2.0%+5) ±(3.0%+5) fuse 2: f10a h 1000v,φ10.3 x 38.1mm 1...

  • Page 60

    General specifications 58 gdm-461 range resolution accuracy overload protection 45~1khz >1khz~10khz 220μa 0.01μa ±(0.8%+10) ±(1.2%+50) fuse 1: f600ma h 1000v,φ6.35 x 31.8mm 2200μa 0.1μa 22ma 0.001ma ±(1.2%+10) ±(1.5%+50) 220ma 0.01ma 10a 0.001a ±(1.5%+10) >1khz~5khz fuse 2: f10a h 1000v,φ10.3 x 38.1...

  • Page 61

    Gdm-360/397/398/461 user manual 59 resistance gdm-397/398 range resolution accuracy overload protection remark 400Ω 0.1Ω ±(1.2%+2) 1000v dc / ac (vpp) when measuring below 2kΩ, apply rel to ensure measurement accuracy. 4kΩ 0.001kΩ ±(1.0%+2) 40kΩ 0.01kΩ 400kΩ 0.1kΩ 4mΩ 0.001mΩ ±(1.2%+2) 40mΩ 0.01mΩ ±...

  • Page 62

    General specifications 60 gdm-360 range resolution accuracy overload protection remark 600Ω 0.1Ω ±(1.2%+2) 1000v dc / ac (vpp) when measuring below 2kΩ, apply rel to ensure measurement accuracy. 6kΩ 0.001kΩ ±(1.0%+2) 60kΩ 0.01kΩ 600kΩ 0.1kΩ 6mΩ 0.001mΩ ±(1.2%+2) 60mΩ 0.01mΩ ±(1.5%+2).

  • Page 63

    Gdm-360/397/398/461 user manual 61 gdm-461 range resolution accuracy overload protection remark 220Ω 0.01Ω ±(0.5%+10) 1000v dc / ac (vpp) when measuring below 2kΩ, apply rel to ensure measurement accuracy. 2.2kΩ 0.0001kΩ 22kΩ 0.001kΩ 220kΩ 0.01kΩ 2.2mΩ 0.0001mΩ ±(0.8%+10) 22mΩ 0.001mΩ ±(1.5%+10) 220...

  • Page 64

    General specifications 62 capacitance gdm-397/398 range resolution accuracy overload protection remark 40nf 0.01nf ±(3.0%+5) 1000v dc / ac (vpp) there is around 10nf residual reading when the circuit is open 400nf 0.1nf 4μf 0.001μf 40μf 0.01μf 400μf 0.1μf ±(4.0%+5) 4000μf 1μf unspecified.

  • Page 65

    Gdm-360/397/398/461 user manual 63 gdm-360 range resolution accuracy overload protection remark 40nf 0.01nf ±(3.0%+5) 1000v dc / ac (vpp) there is around 10nf residual reading when the circuit is open 400nf 0.1nf 4μf 0.001μf 40μf 0.01μf 400μf 0.1μf ±(4.0%+5) 4000μf 1μf unspecified.

  • Page 66

    General specifications 64 gdm-461 range resolution accuracy overload protection remark 22nf 0.001nf ±(3.0%+5) 1000v dc / ac (vpp) there is around 50pf residual reading when the circuit is open. To measure a small value of capacitance, use rel to ensure accuracy. 220nf 0.01nf 2.2μf 0.0001μf 22μf 0.00...

  • Page 67

    Gdm-360/397/398/461 user manual 65 frequency model range accuracy maximum resolution gdm-397/398/360 10hz~10mhz ±(0.1%+4) 0.01hz gdm-461 10hz~220mhz ±(0.01%+5) 0.001hz overload protection: 1000vdc/ ac (vpp) input amplitude: (dc offset is zero) gdm-360/397/398: when 10hz ~ 10mhz: 200mv ≤a ≤ 30vrms gd...

  • Page 68

    General specifications 66 diode test model resolution remarks overload protection gdm-360/397/398 0.001v open circuit voltage around 2.8v 1000vdc / ac (vpp) gdm-461 0.0001v continuity test model resolution overload protection gdm-360/397/398 0.1Ω 1000vdc / ac (vpp) gdm-461 0.01Ω gdm-360/397/398: ope...

  • Page 69

    Gdm-360/397/398/461 user manual 67 temperature measurement (gdm-397 only) range resolution accuracy overload protection ˚c 1˚c (-40~-20˚c): -(8%+5) 1000vdc / ac (vpp) (＞-20~0˚c): ±(1.2%+4) (＞0~100˚c): ±(1.2%+3) (＞100~1000˚c): ±(2.5%+2) ˚f 1˚f (-40~4˚f): -(8%+6) (＞4~32˚f): ±(1.2%+5) (＞32~212˚f): ±(1....

  • Page 70: Warning

    Maintenance 68 m aintenance this section provides basic maintenance information including battery and fuse replacement instructions. Warning do not attempt to repair or service your meter unless you are qualified to do so and have the relevant calibration, performance test, and service information. ...

  • Page 71

    Gdm-360/397/398/461 user manual 69 do not use or store the meter in a place of humidity, high temperature or in the presence of explosives, inflammable materials and strong magnetic fields. Replacing the battery figure 12.

  • Page 72: Warning

    Maintenance 70 warning to avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator “ ” appears. Make sure the test leads are disconnected from the circuit being tested before opening the case bottom. To replace the bat...

  • Page 73

    Gdm-360/397/398/461 user manual 71 replacing the fuses figure 13.

  • Page 74: Warning

    Maintenance 72 warning to avoid electrical shock or arc blast, or personal injury or damage to the meter, use specified fuses only in accordance with the following procedure. To test the fuse: (see figure 13) if the meter does not respond when measuring current or transistor hfe, inspect to see that...

  • Page 75

    Gdm-360/397/398/461 user manual 73 10a range: f2, 10a h 1000v,φ10.3x38.1mm. (ce) 6. Rejoin the case bottom and case top, and reinstall the screw. 7. Rejoin the tilt stand, battery compartment and case bottom, and reinstall the screw. Usb and rs232c serial port usb is optional at extra cost. Please r...