CEM DT-9560 User manual

Operating Instruction for
Heavy Duty Industrial True RMS
Autoranging Digital Multimeter
with VFD Measurement
Please read this manual before switching the unit on.
Important safety information inside.

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True RMS Autoranging Digital Multimeter
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Content
1.Introduction................................................................................
2.Safety.........................................................................................
2-1.Safety Symbols......................................................................
2-2.Per IEC1010 Overvoltage Installation Category........................
2-3.Safety Instructions.................................................................
3.Description..................................................................................
3-1.Meter Description..................................................................
3-2.Symbols Used on LCD Display.................................................
4. ..................................................................Operating Instructions
4-1. ........................................................DC Voltage Measuments
4-2.AC Voltage (Frequency, Duty Cycle) Measurements..................
4-3.mV Voltage Measurements......................................................
4-4.DC Current Measurements......................................................
4-5.AC Current (Frequency, Duty Cycle) Measurements..................
4-6.Resistance Measurements......................................................
4-7.Continuty Check.....................................................................
4-8.Diode Test..............................................................................
4-9.Capacitance Measurements....................................................
4-10.Frequency/Duty Cycle Measurements (Electronic)..................
4-11.Autoranging/Manual Range Selection....................................
4-12.MAX/MIN Mode....................................................................
4-13.Relative Mode......................................................................
4-14.Display Backlight................................................................
4-15.HOLD Mode.........................................................................
4-16.Auto Power Off.....................................................................
4-17.Low Battery Indication..........................................................
5.Maintenance................................................................................
5-1.Battery Installation................................................................
5-2.Replacing the Fuses...............................................................
6.Specifications..............................................................................
6-1.Specifications........................................................................
6-2.General Specifications............................................................

MAX
1000V
4
True RMS Autoranging Digital Multimeter
1.Introduction
• This meter measures AC/DC Voltage, AC/DC Current, Resistance, Frequency (electrical & electronic),
Diode Test, and Continuity.
• It features a waterproof, rugged design for heavy duty use.
• Proper use and care of this meter will provide many years of reliable service.
2.Safety
2-1.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 exceeds (in this
case) 1000 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,
the meter and its test leads should not be handled when these terminals are energized.
This symbol indicates that a device is protected throughout by double insulation or reinforced
insulation.
WARNING
CAUTION

5
True RMS Autoranging Digital Multimeter
2-2.Per IEC1010 Overvoltage Installation Category
Overvoltage Category I
Equipment of Overvoltage Category I is equipment for connection to circuits in which measures
are taken to limit the transient overvoltages to an appropriate low level.
Note: Examples include protected electronic circuits.
Overvoltage Category II
Equipment of Overvoltage Category II is energy-consuming equipment to be supplied from the
fixed installation.
Note: Examples include household, office, and laboratory appliances.
Overvoltage Category III
Equipment of Overvoltage Category III is equipment in fixed installations.
Note: Examples include switches in the fixed installation and some equipment for industrial use
with permanent connection to the fixed installation.
Overvoltage Category IV
Equipment of Overvoltage Category IV is for use at the origin of the installation.
Note: Examples include electricity meters and primary over-current protection equipment.
2-3.Safety Instructions
• This meter has been designed for safe use, but must be operated with caution.
• The rules listed below must be carefully followed for safe operation.
2-3-1.N EVER apply voltage or current to the meter that exceeds the specified maximum:
Input Protection Limits
Function
V DC
V AC
mA AC/DC
A AC/DC
Frequency, Resistance, CAP,
Diode Test, Continuity
Surge Protection: 8kV peak per IEC 61010
Maximum Input
1000VDC RMS
1000VAC RMS
800mA 1000V fast acting fuse
10A 1000V fast acting fuse (30 seconds max every 15 minutes)
250VDC/AC RMS

6
True RMS Autoranging Digital Multimeter
2-3-2. USE EXTREME CAUTION when working with high voltages.
2-3-3.D O NOT measure voltage if the voltage on the “COM” input jack exceeds 1000V above earth
ground.
2-3-4.N EVER connect the meter leads across a voltage source while the function switch is in the
current, resistance, CAP, or diode mode. Doing so can damage the meter.
2-3-5.A LWAYS discharge filter capacitors in power supplies and disconnect the power when making
resistance or diode tests.
2-3-6.A LWAYS turn off the power and disconnect the test leads before opening the covers to replace
the fuse or batteries.
2-3-7.N EVER operate the meter unless the back cover and the battery and fuse covers are in place
and fastened securely.
2-3-8.I f the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

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True RMS Autoranging Digital Multimeter
3.Description
3-1.Meter Description
1-6,000 Counts LCD Display
2-RANGE Button
3-Mode Button
4-MAX/MIN Button
5-RELATIVE Button
6-Hz and % Button
7-HOLD and Backlight Button
Function Switch 8-
9-10A Input Jacks
10- mA Input JacksµA
11-Positive Input Jacks
12-COM Input Jacks
13-Tilt Stand
14-Battery Cover
13
14
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min
1
2
3
4
5
6
7
8
9
10
11
12

213 4
5
6
78
9
10
11
12
13
16
15
14
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True RMS Autoranging Digital Multimeter
3-2.Symbols Used on LCD Display
1-Display Hold
2-Units of Measure List
3-Percent (Duty Ratio)
4-Battery Status
5-Auto Power Off
6-Measurement Reading
7-Autoranging
8-Minimum
9-Maximum
10-Relative
11-Continuity
12-Diode Test
13-Minus Sign
14-Alternating Current
15-Direct Current
16-Frequency ConversionMeasure

9
True RMS Autoranging Digital Multimeter
4.Operating Instructions
WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and
should be measured with great care.
• ALWAYS turn the function switch to the OFF position when the meter is not in use.
• If “OL” appears in the display during a measurement, the value exceeds the range you have
selected. Change to a higher range.
4-1.DC Voltage Measuments
CAUTION: Do not measure DC voltages if a motor on 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 VDC position.
2. Insert the black test lead banana plug into the negative COM jack; Insert the red test lead
banana plug into the positive V jack.
3. Touch the black test probe tip to the negative side of the circuit; Touch the red test probe tip to
the positive side of the circuit.
4. Read the voltage in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

10
True RMS Autoranging Digital Multimeter
4-2.AC Voltage (Frequency, Duty Cycle) Measurements
WARNING: Risk of Electrocution. The probe tips may not be long enough to contact the live parts
inside some 240V outlets for appliances because the contacts are recessed deep in the outlets. As
a result, the reading may show 0 volts when the outlet actually has voltage on it. Make sure the
probe tips are touching the metal contacts inside the outlet before assuming that no voltage is
present.
CAUTION: Do not measure AC voltages if a motor on 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 VAC position. Indicate “AC” onthedisplay.
2. Insert the black test lead banana plug into the negative COM jack; Insert red test lead banana
plug into the positive V jack.
3. Touch the black test probe tip to the neutral side of the circuit; Touch the red test probe tip to
the “hot” side of the circuit.
4. Read the voltage in the display.
5. Press and hold the MODE button key for 2 seconds to indicate “VFD” on the display.
6. Read the VFD value in the display.
7. To exit VFD mode press and hold the MODE button for 2 seconds.
8. Press the HZ/% button to indicate “Hz”.
9. Read the frequency in the display.
10. Press the Hz/% button again to indicate “%”.
11. Read the % of duty cycle in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min
11
True RMS Autoranging Digital Multimeter
4-3.mV Voltage Measurements
CAUTION: Do not measure mV voltages if a motor on 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 mV AC/DC position.
2. Press the MODE button to indicate “DC” or “AC”.
3. Insert the black test lead banana plug into the negative COM jack; Insert the red test lead banana
plug into the positive V jack.
4. Touch the black test probe tip to the negative side of the circuit; Touch the red test probe tip to
the positive side of the circuit.
5. Read the mV voltage in the display.
6. Press the HZ/% button to indicate “Hz”.
7. Read the frequency in the display.
8. Press the Hz/% button again to indicate “%”.
9. Read the % of duty cycle in the display.

12
True RMS Autoranging Digital Multimeter
4-4.DC Current Measurements
CAUTION: Do not make 10A current measurements for longer than 30 seconds. Exceeding 30
seconds may cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 6000µA DC, set the function switch to the µA AC/DC position
and insert the red test lead banana plug into the µA/mA jack.
3. For current measurements up to 600mA DC, set the function switch to the mA AC/DC position
and insert the red test lead banana plug into the µA/mA jack.
4. For current measurements up to 10A DC, set the function switch to the 10A AC/DC position
and insert the red test lead banana plug into the 10A jack.
5. Press the MODE button to indicate “DC” on the display.
6. Remove power from the circuit under test, then open up the circuit at the point where you wish
to measure current.
7. Touch the black test probe tip to the negative side of the circuit; Touch the red test probe tip to
the positive side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min
13
True RMS Autoranging Digital Multimeter
4-5.AC Current (Frequency, Duty Cycle) Measurements
CAUTION: Do not make 10A current measurements for longer than 30 seconds. Exceeding 30
seconds may cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 6000µA AC, set the function switch to the µA AC/DC position
and insert the red test lead banana plug into the µA/mA jack.
3. For current measurements up to 600mA AC, set the function switch to the mA AC/DC position
and insert the red test lead banana plug into the µA/mA jack.
4. For current measurements up to 10A AC, set the function switch to the 10A AC/DC position
and insert the red test lead banana plug into the 10A jack.
5. Press the MODE button to indicate “AC” on the display.
6. Remove power from the circuit under test, then open up the circuit at the point where you wish
to measure current.
7. Touch the black test probe tip to the neutral side of the circuit; Touch the red test probe tip to
the “hot” side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display.
10. Press the Hz/% button to indicate “Hz”.
11. Read the frequency in the display.
12. Press the Hz/% button again to indicate
“%”.
13. Read the % duty cycle in the display.
14. Press the Hz/% button to return to
current measurement.

14
True RMS Autoranging Digital Multimeter
4-6.Resistance Measurements
WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all
capacitors before taking any resistance measurements. Remove the batteries and unplug the line
cords.
1. Set the function switch to the CAP position.Ω
2. Insert the black test lead banana plug into the negative COM jack; Insert the red test lead
banana plug into the positive jack.Ω
3. Press the MODE button to indicate on the Display.Ω
4. Touch the test probe tips across the circuit or part under test. It is best to disconnect one side
of the part under test so the rest of the circuit will not Interfere with the resistance reading.
5. Read the resistance in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

15
True RMS Autoranging Digital Multimeter
4-7.Continuty Check
WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage
on them.
1. Set the function switch to the CAP position.Ω
2. Insert the black lead banana plug into the negative COM jack; Insert the red test lead banana
plug into the positive jack.Ω
3. Press the MODE button to indicate “ ” and “ ” on the displayΩ
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than approximately 50 , the audible signal will sound. If the circuitΩ
is open, the display will indicate “OL”.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

16
True RMS Autoranging Digital Multimeter
4-8. Diode Test
1. Set the function switch to the CAP position.Ω
2. Insert the black test lead banana plug into the negative COM jack and the red test lead banana
plug into the positive jack.Ω
3. Press the MODE button to indicate and V on the display.
4. Touch the test probes to the diode under test. Forward voltage will typically indicate 0.400 to
0.700V. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0V and an open device
will indicate “OL” in both polarities.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

17
True RMS Autoranging Digital Multimeter
4-9.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 unplug the
line cords.
1.Set the rotary function switch to the CAP position.Ω
2.Insert the black test lead banana plug into the negative COM jack; Insert the red test lead banana
plug into the positive V jack.
3.Press the MODE button to indicate “nF” on the display.
4.Touch the test leads to the capacitor to be tested.
5.The test may take up to 3 minutes or more for large capacitors to charge. Wait until the readings
settle before ending the test.
6.Read the capacitance value in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min

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True RMS Autoranging Digital Multimeter
4-10.Frequency/Duty Cycle Measurements (Electronic)
1. Set the rotary function switch to the “Hz/%” position.
2. Press the Hz/% button to indicate “Hz” in the display.
3. Insert the black lead banana plug into the negative COM jack and the red test lead banana plug
into the positive Hz jack.
4. Touch the test probe tips to the circuit under test.
5. Read the frequency on the display.
6. Press the Hz/% button again to indicate “%” on the display.
7. Read the % of duty cycle on the display.
4-11.Autoranging/Manual Range Selection
• When the meter is first turned on, it automatically goes into Autoranging.
• This automatically selects the best range for the measurements being made and is generally the
best mode for most measurements.
• For measurement situations requiring that a range be manually selected, perform the following:
1.Press the RANGE key. The “AUTO” display indicator will turn off.
2.Press the RANGE key to step through the available ranges until you select the range you want.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
Temp
°C
°F
VFD
V Ω CAP
Hz%
Temp
30 sec MAX
every 15 min

19
True RMS Autoranging Digital Multimeter
3.To exit the Manual Ranging mode and return to Autoranging, press and hold the RANGE key for
2 seconds.
Note: Manual ranging does not apply for the Frequency functions.
4-12.MAX/MIN Mode
Note: When using the MAX/MIN function in Autoranging mode, the meter will “lock” into the range
that is displayed on the LCD when MAX/MIN is activated. If a MAX/Min reading exceeds that range,
an “OL” will be displayed. Select the desired range BEFORE entering MAX/MIN mode.
1. Press the MAX/MIN key to activate the MAX/MIN recording mode. The display icon “MAX” will
appear. The meter will display and hold the maximum reading and will update only when a new “max”
occurs.
2. Press the MAX/MIN key again and the display icon “MIN” will appear. The meter will display
and hold the minimum reading and will update only when a new “min” occurs.
3. To exit MAX/MIN mode press and hold the MAX/MIN key for 2 seconds.
4-13.Relative Mode
• The relative measurement feature allows you to make measurements relative to a stored reference
value.
• A reference voltage, current, etc. can be stored and measurements made in comparison to that
value.
• The displayed value is the difference between the reference value and the measured value.
1. Perform the measurement as described in the operating instructions.
2. Press the REL button to store the reading in the display and the “REL” indicator will appear on
the display.
3. The display will now indicate the difference between the stored value and the measured value.
4. Press the REL button to exit the relative mode.
Note: The Relative function does not operate in the Frequency function.
4-14. Display Backlight
• Press and hold the HOLD key for >1 second to turn on or off the display backlight function.
• The backlight will automatically turn off after 5 minutes.

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True RMS Autoranging Digital Multimeter
4-15. HOLD Mode
• The hold function freezes the reading in the display.
• Press the HOLD key momentarily to activate or to exit the HOLD function.
4-16.Auto Power Off
• The auto off feature will turn the meter off after 15 minutes.
• To disable the auto power off feature, hold down the MODE button and turn the meter on.
4-17.Low Battery Indication
• The icon will appear in the display when the battery voltage becomes low.
• Replace the battery when this appears.