Greenlee DM-860A User guide [ml]

INSTRUCTION MANUAL

MANUAL DE INSTRUCCIONES

MANUEL D’INSTRUCTIONS

DM-860A

Digital

Multimeter

Multímetro

digital

Multimètre

numérique

Read and understand all of the instructions and safety information in this manual before operating or servicing this tool.

Lea y entienda todas las instrucciones y la información sobre seguridad que aparecen en este manual, antes de manejar estas herramientas o darles mantenimiento.

Lire attentivement et bien comprendre toutes les instructions et les informations sur la sécurité de ce manuel avant d’utiliser ou de procéder à l’entretien de cet outil.

Enregistrez votre produit en ligne, www.greenlee.com

Description

The Greenlee DM-860A Digital Multimeter is a hand-held testing device with the following measurement capabilities: AC and DC voltage, AC and DC current, percent of loop current, two channels of temperature (K-type thermocouples), frequency, duty cycle, resistance, conductance, and capacitance. It also checks diodes and veriﬁes continuity.

The DM-860A features a bar graph display that responds more quickly than the numeric display— useful for detecting faulty contacts, potentiometer clicks, and signal spikes. An optional optically isolated computer interface with software facilitates the recording of readings from the meter to a computer.

Other specialized functions and capabilities include:

•Dual display shows two measurements, such as AC voltage and frequency, at the same time.

•Beep-Jack™ audible warning alerts the user with a beep and an error message on the LCD if the

test lead is plugged into the mAµA or A input terminal while the selector switch is not in the mAµA or A position.

•AC bandwidth to 100 kHz for voltage or 20 kHz for current.

•MAX/MIN function which stores the maximum, minimum, and average.

•Crest capture mode to capture voltage or current signal peaks.

•Selectable between 50,000 or 500,000 counts resolution when measuring DC voltage.

•Relative zero mode.

•Automatic or manual ranging.

•Intelligent automatic power off.

•Backlighted LCD for reading in dim conditions.

Safety

Safety is essential in the use and maintenance of Greenlee tools and equipment. This instruction manual and any markings on the tool provide information for avoiding hazards and unsafe practices related to the use of this tool. Observe all of the safety information provided.

Purpose of This Manual

This instruction manual is intended to familiarize all personnel with the safe operation and maintenance procedures for the Greenlee DM-860A Digital Multimeter.

Keep this manual available to all personnel. Replacement manuals are available upon request at no charge at www.greenlee.com.

Do not discard this product or throw away!

For recycling information, go to www.greenlee.com.

Important Safety Information

SAFETY ALERT SYMBOL

This symbol is used to call your attention to hazards or unsafe practices which could result in an injury or property damage. The signal word, deﬁned below, indicates the severity of the hazard. The message after the signal word provides information for preventing or avoiding the hazard.

Immediate hazards which, if not avoided, WILL result in severe injury or death.

Hazards which, if not avoided, COULD result in severe injury or death.

Hazards or unsafe practices which, if not avoided, MAY result in injury or property damage.

Read and understand this material before operating or servicing this equipment. Failure to understand how to safely operate this tool could result in an accident causing serious injury or death.

DM-860A

Electric shock hazard: Contact with live circuits could result in severe injury or death.

All speciﬁcations are nominal and may change as design improvements occur. Greenlee Textron Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

® Registered: The color green for electrical test instruments is a registered trademark of Greenlee Textron Inc. Beep-Jack is a trademark of BTC. Microsoft and Windows are registered trademarks of Microsoft Corporation.

KEEP THIS MANUAL

Important Safety Information

Electric shock and ﬁre hazard:

•Do not expose this unit to rain or moisture.

•Do not use the unit if it is wet or damaged.

•Use test leads or accessories that are appropriate for the application. Refer to the category and

voltage rating of the test lead or accessory.

•Inspect the test leads or accessory before use. They must be clean and dry, and the insulation must be in good condition.

•Use this unit for the manufacturer’s intended purpose only, as described in this manual. Anyotheruse can impair the protection provided by the unit.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

•Do not apply more than the rated voltage between any two input terminals, or between any input terminal and earth ground.

•Do not contact the test lead tips or any uninsulated portion of the accessory.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

•Do not operate with the case open.

•Before opening the case, remove the test leads from the circuit and shut off the unit.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard: The fuses are an integral part of the overvoltage protection. When fuse replacement is necessary,

refer to “Speciﬁcations” for the correct type, size, and capacity. Using any other type of fuse will void the overvoltage protection rating of the unit.

Failure to observe this warning could result in severe injury or death.

DM-860A

Important Safety Information

Electric shock hazard:

•Unless measuring voltage, current, or frequency, shut off and lock out power. Make sure that all capacitors are discharged. Voltage must not be present.

•Set the selector and connect the test leads so that they correspond to the intended measurement. Incorrect settings or connections can result in a blown fuse.

•Using this unit near equipment that generates electromagnetic interference can result in unstable or inaccurate readings.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard: Do not change the measurement function while the test leads are connected to a component or

circuit. Failure to observe this precaution may result in injury and can damage the unit.

Electric shock hazard:

•Do not attempt to repair this unit. It contains no user-serviceable parts.

•Do not expose the unit to extremes in temperature or high humidity. Refer to “Speciﬁcations.”

Failure to observe these precautions may result in injury and can damage the unit.

Identiﬁcation

1. Display LCD and bar graph

2. Feature Buttons Refer to explanations under “Using the Features”

3. Selector Selects a function or turns power OFF

4. A Positive input terminal for high current measurements;

negative input terminal for T2

5. mA µA Positive input terminal for low current measurements;

positive input terminal for T2

6. COM Negative, common, or ground input terminal for all measurements

7. ΩV Positive input terminal for all measurements except current

4 7

Symbols on the Unit

Warning—Read the instruction manual Double insulation

5 6

Display Icons

Primary Display

8. Bar graph element

9. – Polarity indicator for bar graph

10. Bar graph scale

11. ∆ Relative zero function is enabled.

12. VFD VFD function is enabled.

13. – Polarity indicator

14. 8.8.8.8.88 Numeric display

15. T1-T2 T1, T2, or T1-T2 function is enabled.

16. AC measurement is selected.

17. DC measurement is selected.

18. MAX Maximum value being recorded

or displayed.

19. MIN Minimum value being recorded

or displayed.

20. AVG Average value being recorded

or displayed.

21. Record function is enabled.

22. Crest capture function is enabled.

23. Hold function is selected.

24. Automatic ranging is enabled.

25. Continuity

26. Low battery

27. } Overload symbol (bar graph display)

28. 5 Bar graph maximum range indicator

29. D% Duty cycle function is enabled.

30. k Kilo (103)

51-53

2625

DM-860A

31. M Mega (10

)

32. Ω Ohm

33. Hz Hertz (frequency in

cycles per second)

34. dBm Decibel

35. m Milli (10-3)

36. µ Micro (10-6)

37. V Volt

38. A Ampere

39. n Nano (10-9)

40. F Farad

41. S Siemen

Secondary Display

42. %4-20mA Industrial process control loop

current function is enabled.

43. µ Micro (10-6)

44. m Milli (10-3)

45. A Ampere

46. V Volt

47. M Mega (106)

48. k Kilo (103)

49. Hz Hertz (frequency in

cycles per second)

50. 8.8.8.8 Numeric display

51. T2 T2 function is enabled.

52. AC measurement is selected.

53. – Polarity indicator

21-23 18-20

16-17

13-14

8-9

12 11

47-49

43-46 42

29-41 28

Using the Features

•Dual Digital Display: This meter can display two measurements, such as AC voltage and frequency,

at the same time. Display combinations are shown using large symbols to indicate the measurement on the primary display and small, raised symbols to indicate the measurement on the secondary display. For example, “VACHz” means the primary display contains the AC voltage measurement, and the secondary display contains the frequency measurement.

•VFD ~V and VFD Hz: These functions use ﬁltering and noise-rejection algorithms to make accurate

voltage and frequency measurements on most variable frequency drives. The voltage measurement automatically selects the 500 volt range. Use the RANGE button to select other ranges only when needed. The sensitivity for VFD frequency measurements depends on voltage range and input frequency. Refer to “Frequency – Line Level” in the “Accuracy” section of this manual.

•SELECT: Press momentarily to toggle between functions, measurement modes, or display modes.

The last used setting becomes the default when that function is selected again. To change the default, select a new setting. The setting will be stored in nonvolatile memory.

•RANGE: Press once to enter the manual ranging mode. The icon will disappear from the

display. Press repeatedly to step through the ranges. Press and hold to return to the automatic ranging mode.

Note: When using CREST, REC, HOLD, or ∆ mode, pressing RANGE will cause the meter to exit that mode.

•∆: Finds the difference between two measurements. While taking a measurement, press ∆ to set the

display to zero. The ∆ icon will appear on the display. Take the second measurement. The value on the display will be the difference between the two measurements. Press again to exit this mode.

This feature applies to the main display only.

•HOLD : Press momentarily to hold the present value on the display. Press again to exit this mode.

This feature does not affect the bar graph.

•CREST : Press momentarily to activate the crest recording mode.The input value is measured

every 1 ms in this mode. and “MAX” will appear on the display. The LCD will display the maximum crest value. The meter will beep whenever the maximum or minimum is updated. Press repeatedly to select the desired display: maximum or minimum crest value. Press and hold to exit this mode.

The automatic power off feature is disabled when using this function. Note: When using the CREST function, pressing RANGE will cause the meter to exit this mode.

•REC : Press momentarily to activate the MAX/MIN/AVG recording mode. The input value is

measured every 50 ms in this mode. “MAX MIN” and “AVG” will appear on the display. The LCD will display the actual input value. The meter will beep whenever the maximum or minimum is updated. Press repeatedly to select the desired display: maximum, minimum, average, or actual input. Press and hold to exit this mode.

The automatic power off feature is disabled when using this function. Note: When using the REC function, pressing RANGE will cause the meter to exit this mode.

• : Press and hold until backlight illuminates. Press and hold again to turn off. The backlight

automatically turns off after approximately 30 seconds to extend battery life.

DM-860A

Using the Features (cont’d)

•dBm-Ω: The reference impedance is displayed for 1 second after selecting the dBm function.

Momentarily press dBm-Ω to change the reference impedance. Refer to the “Speciﬁcations” section for the available values.

Note: This is an AC voltage measurement calculated according to the formula dBm = 20 x log (measured voltage / reference voltage The reference voltage is the voltage that causes 1 mW of power to be dissipated in the selected

reference impedance.

•T1-T2: Press momentarily to select the desired temperature display: T1, T2, T1T2, or T1-T2T2.

•500000: Press and hold to toggle between 50,000 counts fast mode and the 500,000 counts high

resolution mode for DC voltage measurements.

•Intelligent Automatic Power Off (APO): To extend battery life, the meter shuts itself off after

approximately 17 minutes of inactivity. Inactivity occurs when buttons are not pressed or the selector is not turned. The meter will not enter APO when there are signiﬁcant readings of over 10% of the range or non-OL readings for resistance and continuity. To restore power, press SELECT, RANGE, ∆, or HOLD or turn the selector to OFF and back on again. To disable this feature, press SELECT while turning the meter on.

•Disabling the Beeper: Hold down the RANGE button while turning the meter on to temporarily

disable the beeper feature. Turn the selector to OFF and then back on to enable the beeper.

•Hz: Frequency can be measured in most voltage and current settings of the selector. Press SELECT

until “Hz” appears in the primary or secondary display, as desired. The sensitivity of the Line Level Frequency function varies with measurement range. Refer to “Speciﬁcations.” Auto-ranging measurements usually set the best trigger level. If the frequency reading becomes unstable or is blank, press the RANGE button to select another trigger level.

•%4-20mA: This calculated value is one of three available options for the secondary display when

measuring DC milliamps. It is useful for 4-20 mA industrial process control loop applications. A reading of 4 mA on the primary display gives a 0% reading on the secondary display, 12 mA gives 50%, 20 mA gives 100%, etc.

AC Measurement

AC measurements are usually displayed as RMS (root mean square) values. The RMS value is equal to the value of a DC waveform, which would deliver the same power if it replaced the time-varying waveform. Two AC measurement methods are average-responding RMS calibrated and true RMS-reading.

The average-responding RMS calibrated method takes the average value of the input signal after full wave rectiﬁcation, multiplies it by 1.11, and displays the result. This method is accurate if the input signal is a pure sine wave.

The true RMS-reading method uses internal circuitry to read the true RMS value. This method is accurate, within the speciﬁed crest factor limitations, whether the input signal is a pure sine wave, square wave, triangle wave, half wave, or signal with harmonics. The ability to read true RMS provides much more measurement versatility. The Greenlee DM-860A is a true RMS meter.

The Waveforms and Crest Factors table shows some typical AC signals and their RMS values.

Waveforms and Crest Factors

Waveform

RMS Value 100 100 100 100

Average Value 90 100 87 64

Crest Factor*

(x)

* The crest factor is the ratio of the peak value to the RMS value; it is represented by the Greek

letter x.

1.414 1 1.73 2

AC + DC True RMS

AC + DC true RMS calculates both of the AC and DC components given by the expression

when making measurements and responds accurately to the total effective RMS value regardless of the waveform. Distorted waveforms with the presence of DC components and harmonics may cause:

•Transformers, generators, and motors to overheat

•Circuit breakers to trip prematurely

•Fuses to blow

•Neutrals to overheat due to the triplen harmonics present on the neutral

•Bus bars and electrical panels to vibrate

DM-860A

AC Bandwith

AC bandwidth of a digital multimeter (DMM) is the range of frequencies over which AC measurements can be made within the speciﬁed accuracy. It is the frequency response of the AC functions—not of the frequency measurement functions. A DMM cannot accurately measure the AC value with frequency spectrums beyond the AC bandwidth of the DMM. Therefore, wide AC bandwidth plays an important role in high performance DMMs. Complex waveforms, noise, and distorted waveforms contain frequency components that are much higher than the fundamental; for example, high frequency noise on a 50/60 Hz power line.

Operation

Electric shock hazard: Contact with live circuits could result in severe injury or death.

Self-Diagnostic Mode

The message “rE-O” may appear when the meter is turned on. This indicates that the meter is performing a routine self-diagnostic. Do not turn the meter off. Allow the diagnostic procedure to ﬁnish. If the message “C_Er” appears on the display when the meter is turned on, some ranges may be well outside of speciﬁcation. To avoid incorrect measurements, stop using the meter and return it to Greenlee for recalibration.

Operating Procedure

1. Refer to the Settings Table. Set the selector to the proper setting, press SELECT (when instructed to do so), and connect the test leads to the meter.

2. Refer to “Typical Measurements” for speciﬁc measurement instructions.

3. Test the unit on a known functioning circuit or component.

•If the unit does not function as expected on a known functioning circuit, replace the battery and/

or fuses.

•If the unit still does not function as expected, call Greenlee for technical assistance

at 800-435-0786.

4. Take the reading from the circuit or component to be tested.

Operation (cont’d)

Settings Table

The meter stores the last used function of each selector position in its nonvolatile memory. If this is not the correct function when you turn the selector, press SELECT until the desired icon appears.

The dual display options are shown along with the icons. In the table, “~VHz” indicates that “~” and “V” appear in the primary display, and “Hz” appears in the secondary display. This combination shows the AC voltage measurement in the primary display and frequency in the secondary display.

To measure this

characteristic …

Variable Speed Drive—

Voltage and Frequency

Voltage—AC TrueRMS

(1000 V max)

*Voltage—DC

(1000 V max)

Voltage—AC + DC

True RMS (1000 V max)

Voltage—DC

(500 mV max)

Voltage—AC + DC

True RMS (500 mV max)

Voltage—AC

True RMS (500 V max)

Frequency—Line Level

Voltage or Current

**Frequency—Logic Level

Set the selector to

this symbol…

Set for voltage or current according

to this table.

Press SELECT until

these icons appear on

the display …

VHz or Hz

V or V

mV or mV

~mV

mVHz or Hz

Any display option that

includes Hz

% Duty Cycle D% D%

Reference impedance and dBm for 1 s, then

dBm

(press dBm-Ω

to change reference

impedance)

dBm (0 dB = 1 mW in reference impedance)

dBm

(

function 1000 V

max; function

500 mV max.)

* For precise measurements, press 500000 to toggle between 50,000 counts and 500,000 counts.

Applies to DC volts only.

** Logic level frequency has a ﬁxed sensitivity and is for digital signals. Refer to “Accuracy”.

~mV

Connect

the red

lead to…

ΩV

— —

ΩV

Connect the

black lead

to …

COM

This table continues on the next page.

DM-860A

Operation (cont’d)

Settings Table (cont’d)

To measure this

characteristic …

Set the selector to

this symbol…

Press SELECT until

these icons appear on

the display …

°C or °F (press RANGE

Dual Temperature T

1T2

for display options T1,

T2, T1T2 or T1-T2T2)

†Capacitance

Diode V and diod

Resistance Ω Ω

Continuity

and Ω

Conductance nS nS

Current—AC, DC, or

AC + DC True RMS

(10 A max)

Current—AC, DC, or

AC + DC True RMS

(600 mA max)

Current—AC, DC, or

AC + DC True RMS

(6000 µA max)

µA

or mA

µA, µA

or µA

A, A

~A,

or A

%4-20mA,

~mA,

~µA,

µA

Industrial Process Control

Loop Current

% 4 to 20 mA

%4-20mA

† Discharge capacitor before measurement. Refer to “Typical Measurements” regarding

polarized capacitors.

Note 1: T

1+ connects to ΩV , and T1– connects to COM.

Note 2: T2+ connects to mA µA, and T2– connects to A.

~A,

~µA,

Connect

lead to…

See Notes

the red

black lead

1 and 2

ΩV

A COM

mA µA COM

Connect the

to …

—

COM

Typical Measurements

Voltage Measurement

Current Measurement

Typical Measurements

DM-860A

Resistance Measurement

Continuity Check

Capacitance Measurement Diode Measurement

Reverse Bias

Forward Bias

Note: For polarized capacitors, attach red probe to positive terminal and black probe to negative terminal of capacitor.

Typical Measurements

Temperature

DM-860A

Using the Optional Software

The DM-860A is compatible with Greenlee DMSC-9U, an optically isolated computer interface cable and software. It allows measurements to be logged to a personal computer using the Microsoft® Windows® operating system.

Installing the Software

1. Insert the CD into the computer’s CDROM drive.

2. The installation program should launch automatically. If it does not, double click on the CD icon in “My Computer.”

3. The installation program menu will appear. Click on “Software Installation.”

4. Type your meter’s catalog number (for example, “DM-860A”) in the dialog box.

5. Complete the remaining dialog boxes according to user preferences.

Connecting the Optical USB Interface Cable

1. Align the key of the connector with the key slot on the meter.

2. Twist the connector clockwise until it locks into place.

3. Connect the cable to a USB port of the PC.

Key slot on back of meter

Accuracy

Refer to the “Speciﬁcations” section for operating conditions and temperature coefﬁcient. Accuracy is speciﬁed as follows: ± (a percentage of the reading + a ﬁxed amount) at 23 °C ± 5 °C

(73.4 °F ± 9 °F), 0% to 75% relative humidity. Speciﬁcations are for 50,000 counts mode. True RMS Readings: Voltage and current accuracies are speciﬁed from 5% to 100% of the range

unless otherwise speciﬁed. Frequency must be within the speciﬁed bandwidth for non-sinusoidal waveforms. Crest factors are as follows:

•Crest factor < 2.1:1 at full scale

•Crest factor < 4.2:1 at half scale

AC, DCAC, and AC + DCAC Current

Range

500.00 µA ± (0.5% + 0.5 µA) ± (0.7% + 0.5 µA) ± (2.0% + 0.5 µA) ± (5.0% + 0.5 µA)

5000.0 µA ± (0.5% + 5.0 µA) ± (0.7% + 5.0 µA) ± (2.0% + 5.0 µA) ± (5.0% + 5.0 µA)

50.000 mA ± (0.5% + 0.05 mA) ± (0.7% + 0.05 mA) ± (2.0% + 0.05 mA) ± (5.0% + 0.05 mA)

500.00 mA ± (0.5% + 0.5 mA) ± (0.7% + 0.5 mA) ± (2.0% + 0.5 mA) ± (5.0% + 0.5 mA)

5.0000 A ± (0.5% + 0.005 A) ± (0.7% + 0.005 A) Unspeciﬁed Unspeciﬁed

10.000 A* ± (0.5% + 0.05 A) ± (0.7% + 0.05 A) Unspeciﬁed Unspeciﬁed

10 A continuous; 20 A maximum (Duty Cycle: 30 seconds on, 5 minutes off).

Range

500.00 µA

5000.0 µA

50.000 mA

500.00 mA

5.0000 A

10.000 A

Accuracy at DC

and 50 Hz to 60 Hz

Burden Voltage

(all frequency ranges)

0.15 mV/µA

3.3 mV/mA

45 mV/A

Accuracy at

40 Hz to 1 kHz

Accuracy at

1kHz to 20 kHz

Accuracy at

20 kHz to 100 kHz

DC Current

Range Accuracy Burden Voltage

500.00 µA ± (0.15% + 0.2 µA)

5000.0 µA ± (0.1% + 2.0 µA)

50.000 mA ± (0.15% + 0.02 mA)

500.00 mA ± (0.15% + 0.3 mA)

5.0000 A ± (0.5% + 0.002 A)

10.000 A* ± (0.5% + 0.02 A)

10 A continuous; 20 A maximum (Duty Cycle: 30 seconds on, 5 minutes off).

0.15 mV/µA

3.3 mV/mA

45 mV/A

DM-860A

Accuracy (cont’d)

DCAC and AC + DCAC Voltage

Range

Accuracy* at

20 Hz to 45 Hz

500.00 mV ± (1.5% + 0.4 mV) ± (0.5% + 0.4 mV) ± (1.0% + 0.4 mV) ± (3.5% + 0.4 mV)**

5.0000 V ± (1.5% + 0.004 V) ± (0.5% + 0.008 V) ± (1.2% + 0.004 V) ± (4.0% + 0.004 V)**

50.000 V ± (1.5% + 0.04 V) ± (0.5% + 0.08 V) ± (1.2% + 0.04 V) ± (4.0% + 0.04 V)**

500.00 V Unspeciﬁed ± (0.5% + 0.8 V) Unspeciﬁed Unspeciﬁed

1000.0 V Unspeciﬁed ± (0.5% + 8 V) Unspeciﬁed Unspeciﬁed

From 5% to 10% of range: Accuracy percentage of reading + 80 digits.

From 5% to 10% of range: Accuracy percentage of reading + 180 digits. From 10% to 15% of range: Accuracy percentage of reading + 100 digits.

Residual reading less than 50 digits with test leads shorted.

Note: “Digits” refers to the least signiﬁcant digit (the number in the right-most position).

VFD AC Voltage

Range

Accuracy* at 5 Hz to 20 Hz

5.0000 V ± (3% + 0.008 V) ± (2% + 0.005 V) ± (6% + 0.008 V)**

50.000 V ± (3% + 0.08 V) ± (2% + 0.05 V) ± (6% + 0.08 V)**

500.00 V ± (3% + 0.8 V) ± (2% + 0.5 V) ± (6% + 0.8 V)**

1000.0 V ± (3% + 8 V) ± (2% + 5 V) ± (6% + 8 V)**

Not speciﬁed for fundamental frequency greater than 440 Hz.

** Accuracy decreases linearly from ± (2.0% + 50 digits) at 200 Hz to ± (6% + 80 digits) at 440 Hz.

Accuracy* at DC

and 45 Hz to 1 kHz

Accuracy* at

20 Hz to 200 Hz

Accuracy* at

1 kHz to 20 kHz

Accuracy* at

20 kHz to 40 kHz

Accuracy* at

200 Hz to 440 Hz

Accuracy (cont’d)

AC Voltage

Range

500.00 mV ± (1.2% + 0.4 mV) ± (0.3% + 0.2 mV) ± (0.4% + 0.25 mV)

5.0000 V ± (1.2% + 0.004 V) ± (0.3% + 0.003 V) ± (0.3% + 0.004 V)

50.000 V ± (1.2% + 0.04 V) ± (0.3% + 0.03 V) ± (0.3% + 0.04 V)

500.00 V Unspeciﬁed ± (0.5% + 0.3 V) ± (0.5% + 0.4 V)

1000.0 V Unspeciﬁed ± (0.5% + 3 V) ± (0.8% + 4 V) (65 Hz to 1 kHz)

Range

500.00 mV ± (0.5% + 0.3 mV) ± (2.5% + 0.4 mV)**

5.0000 V ± (0.7% + 0.004 V) ± (3.5% + 0.004 V)**

50.000 V ± (0.7% + 0.04 V) ± (3.5% + 0.04 V)**

500.00 V ± (0.7% + 0.4 V) Unspeciﬁed

1000.0 V Unspeciﬁed Unspeciﬁed

From 5% to 10% of range: Accuracy percentage of reading + 80 digits.

From 5% to 10% of range: Accuracy percentage of reading + 180 digits.

Residual reading less than 50 digits with test leads shorted.

Note: “Digits” refers to the least signiﬁcant digit (the number in the right-most position).

DC Voltage

Range Accuracy Input Impedance

500.00 mV ± (0.02% + 0.02 mV) 10 MΩ, 80 pF nominal

5.0000 V ± (0.02% + 0.0002 V)

50.000 V ± (0.03% + 0.002 V)

500.00 V ± (0.04% + 0.02 V)

1000.0 V ± (0.15% + 0.2 V)

Accuracy* at

20 Hz to 45 Hz

Accuracy* at

10 kHz to 20 kHz

Accuracy* at

45 Hz to 65 Hz

Accuracy* at

20 kHz to 100 kHz

10 MΩ, 60 pF nominal

Accuracy* at

65 Hz to 10 kHz

Accuracy (cont’d)

Resistance and Conductance

Range Accuracy

500.00 Ω ± (0.07% + 0.10 Ω) 3.0 VDC

5.0000 kΩ ± (0.07% + 0.0002 kΩ)

50.000 kΩ ± (0.1% + 0.002 kΩ)

500.00 kΩ ± (0.1% + 0.02 kΩ)

5.0000 MΩ ± (0.3% + 0.0006 MΩ)

50.000 MΩ ± (2.0% + 0.006 MΩ)

99.99 nS ± (0.8% + 0.10 nS)*

± (2.0% + 0.40 nS) below 9.99 nS.

Capacitance

Range Accuracy*

50.00 nF ± (0.8% + 0.03 nF)

500.0 nF ± (0.8% + 0.3 nF)

5.000 µF ± (1.5% + 0.003 µF)

50.00 µF ± (2.5% + 0.03 µF)

500.0 µF** ± (3.5% + 0.5 µF)

5.000 mF** ± (5.0% + 0.005 mF)

25.00 mF** ± (6.5% + 0.05 mF)

1, T2, T1-T2 Dual Temperature

Range Accuracy*

–50 °C to 1000.0 °C ± (0.3% + 1.5 °C)

–58 °F to 1832.0 °F ± (0.3% + 3.0 °F)

Thermocouple range and accuracy not included.

Typical Open Circuit

Voltage

1.3 VDC

Accuracies are for ﬁlm capacitors (capacitors with negligible dielectric absorption).

In manual ranging mode, the 500.0 µF, 5.000 mF, and

25.00 mF ranges are not speciﬁed below 45.0 µF,

0.450mF, and 4.50 mF, respectively.

DM-860A

Accuracy (cont’d)

Frequency—Line Level

Range: 5.000 Hz to 200.00 kHz Accuracy: ± (0.02% + 4 digits)

AC Function

Range

500 mV 100 mV 5 V 0.5 V 5000 µA 500 µA 50 V 5 V 500 V 50 V 500 mA 50 mA 1000 V 500 V 10 Hz to 10 kHz 5 A 1 A VFD 5 V 0.5 V to 2 V* VFD 50 V 5 V to 20 V* VFD 500 V 50 V to 200 V*

Frequency —Logic Level

Range: 5.000 Hz to 2.0000 MHz Accuracy: ± (0.002% + 4 digits) Sensitivity: 2.5 Vp square wave

% Duty Cycle

Range: 0.1% to 99.99% Accuracy: ± (3 digits/kHz + 2 digits) Input Frequency: 5 Hz to 500 kHz, 5 V logic family

Diode Test

Measuring Range: 2.0000 V Test Current (typical): 0.4 mA Open Circuit Voltage: < 3.0 VDC Accuracy: ± (1% + 0.0001 V)

Continuity

Tone Threshold: Between 20 Ω and 200 Ω Response Time: < 100 µs

dBm

The range and accuracy depend on the AC voltage function used and the selected reference

impedance.

Selectable Reference Impedance: 4, 8, 16, 32, 50, 75, 93, 110, 125, 135, 150, 200, 250, 300, 500,

600, 800, 900, 1000, 1200 Ω

Crest Capture (Voltage and Current) for Crests > 0.8 ms in duration

Accuracy: Speciﬁed accuracy ± 100 digits Resolution: 5000 digits

Sensitivity (Sine RMS)

Range

10 Hz to 200 kHz

10 Hz to 100 kHz

10 Hz to 440 Hz

AC Function

Range

500 µA 50 µA

50 mA 5 mA

10 A 10 A

VFD sensitivity linearly decreases from 10% of range @ 200 Hz to 40% of range @ 440 Hz.

Sensitivity

(Sine RMS)

Range

10 Hz to 10 kHz

10 Hz to 3 kHz

DM-860A

Speciﬁcations

Display: LCD

Normal Mode: 50,000 counts High Resolution Mode: 500,000 counts Frequency: 99,999 counts 41-segment bar graph

Polarity: Automatic Input Impedance: 10 MΩ, 60 pF nominal (80 pF for 500 mV ranges). Sampling Rate:

50,000 Counts Mode: 5 per second nominal 500,000 Counts Mode: 1.25 per second nominal Bar Graph Display: 60 per second

Temperature Coefﬁcient: Nominal 0.15 x (Accuracy) per °C below 18 °C from 0 °C to 18 °C

(32 °F to 64 °F) or above 28 °C from 28 °C to 40 °C (82 °F to 104 °F) or otherwise speciﬁed

Intelligent Automatic Power Off: After 17 minutes of inactivity Low Battery Indication: Below approximately 7 V Noise Rejection*:

Normal Mode Rejection Ratio > 60 dB at 50 Hz and 60 Hz when measuring DCV Common Mode Rejection Ratio > 90 dB from 0 Hz to 60 Hz when measuring ACV Common Mode Rejection Ratio > 120 dB at 50 Hz and 60 Hz when measuring DCV

Operating Conditions:

0 °C to 31 °C (32 °F to 88 °F), 0% to 80% relative humidity 31 °C to 45 °C (88 °F to 113 °F), relative humidity decreasing linearly from 80% to 50%

(non-condensing) Altitude: 2000 m (6500') maximum Indoor use only Pollution Degree: 2

Storage Conditions: –20 °C to 60 °C (–4 °F to 140 °F), 0% to 80% relative humidity (non-condensing)

Remove battery

Battery: 9 V battery (NEDA 1604, JIS 006P or IEC 6F) E.M.C.: Meets EN61326-1:2006

In an RF ﬁeld of 3 V/m:

Capacitance function is not speciﬁed

Other function ranges: Total Accuracy = Speciﬁed Accuracy + 100 digits Performance above 3 V/m is not speciﬁed

* Noise rejection is the ability to reject unwanted signals, or noise.

•Normal mode voltages are AC signals that can cause inaccurate DC measurements. NMRR

(Normal Mode Rejection Ratio) is a measure of the ability to ﬁlter out these signals.

•Common mode voltages are signals present at the COM and + input terminals, with respect to

ground, that can cause digit rattle or offset in voltage measurements. CMRR (Common Mode Rejection Ratio) is a measure of the ability to ﬁlter out these signals.

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