3360 - Multimeter PeakTech - Free user manual and instructions

Product Type	Digital Multimeter
Brand	PeakTech
Model	3360
Category	Multimeter
Dimensions (W x H x D)	85 x 185 x 55 mm
Weight	Approx. 400 g
Power Supply	9 V battery (NEDA 1604)
Display	LCD 40000 counts, backlight, 42-segment bargraph
Max AC/DC Voltage	1000 V
Max AC/DC Current	10 A (20 A for max 10 s every 15 min)
Max Resistance	40 MΩ
Max Capacitance	40 mF
Max Frequency	100 MHz
Temperature	-50 to +1000 °C
Special Functions	True RMS, Data Hold, Relative, Min/Max, Peak, 4-20mA%, auto power off (disablable)
Safety	CAT III 1000 V, CAT IV 600 V, double insulation, IP67
Included Accessories	Test leads, K-type thermocouple, adapter, pouch, battery
Maintenance	Clean with damp cloth and mild detergent; avoid solvents
Repairability	Fuse replacement (500 mA/1000 V and 10 A/1000 V) and battery
Operating Temperature	5 to 40 °C
Max Humidity	< 80%

Frequently Asked Questions - 3360 PeakTech

How to measure DC voltage?

Set the function switch to V. Press MODE until DC is displayed. Connect the black test lead to the COM jack and the red lead to the V/Ω jack. Touch the test probes to the circuit points. Read the value and polarity on the display.

How to use the hold function?

Take a measurement, then press HOLD to freeze the display. The HOLD symbol appears. Press again to return to normal mode.

How to replace the battery?

Turn off the device and disconnect the test leads. Unscrew the battery compartment cover (2 screws). Replace the old battery with a new 9 V (NEDA 1604). Close the cover. Never use the device if the housing is not completely closed.

What does 'OL' display mean?

OL means Overload. The measured value exceeds the selected range. Switch to a higher range or use an attenuating probe if necessary.

How to disable auto power off?

Hold down the MODE button while turning on the device. The display shows APO d. To reactivate, turn off and on normally. This function is only available on model 3360.

How to measure high current (up to 10 A)?

Set the switch to 10A position. Connect the red lead to the 10A jack and the black to COM. Open the circuit and insert the multimeter in series. Do not exceed 10 A continuously (20 A max 10 seconds).

How to test a diode?

Set the switch to the Ω (diode) position. Press MODE until the diode symbol appears. Connect red to V/Ω and black to COM. Touch the diode: a reading indicates forward voltage; reverse the probes: if OL, the diode is good. If both readings are low or zero, the diode is shorted.

How to use the temperature measurement function?

Connect the temperature adapter to the input jacks. Insert the K-type thermocouple into the adapter respecting polarity. Set the switch to °C/°F (via MODE). Touch the probe to the object to measure. Wait about 30 seconds for the reading to stabilize.

What to do if the device shows nothing?

Check that the battery is present and properly connected. Check its condition (replace if necessary). Check fuses: open the battery compartment and rear housing (6 screws) to inspect the 500 mA/1000 V and 10 A/1000 V fuses. Replace if defective.

How to clean the multimeter?

Use a soft cloth slightly dampened with a mild detergent. Never use abrasive products or solvents. Ensure no moisture enters the interior. Wipe after cleaning.

USER MANUAL 3360 PeakTech

This product complies with the requirements of the following European Community Directives: 2014/30/EC (Electromagnetic Compatibility) and 2014/35/EC (Low Voltage) as amended by 2014/32/EU (CE-Marking). Overvoltage category III 1000V; over-voltage category IV 600V; pollution degree 2.

CAT I: For signal level, telecommunication, electronic with small transient over voltage

CAT II: For local level, appliances, main wall outlets, portable equipment

CAT III: Distribution level, fixed installation, with smaller transient over-voltages than CAT IV.

CAT IV: Units and installations, which are supplied overhead lines, which are stand in a risk of persuade of a lightning, i.e. main-switches on current input, over-voltage-diverter, current use counter.

To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-circuits (arcing), the following safety precautions must be observed.

Damages resulting from failure to observe these safety precautions are exempt from any legal claims whatever.

• Do not use this instrument for high-energy industrial installation measurement. This instrument is intended for use in installation over-voltage category III.

• Do not exceed the maximum permissible input ratings (danger of serious injury and/or destruction of the equipment).

• The meter is designed to withstand the stated max voltages. If it is not possible to exclude without that impulses, transients, disturbance or for other reasons, these voltages are exceeded a suitable prescale (10:1) must be used.

• Replace a defective fuse only with a fuse of the original rating. Never short-circuit fuse or fuse holding.
• Disconnect test leads or probe from the measuring circuit before switching modes or functions.
• Do not conduct voltage measurements with the test leads connected to the mA/A- and COM-terminal of the equipment.
• The 10A-range is protected. To avoid damage or injury, use the meter only in circuits limited by fuse or circuit breaker to 10A or 2000VA.
• To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements.
• Do not conduct current measurements with the leads connected to the V/Ω-terminals of the equipment.
• Check test leads and probes for faulty insulation or bare wires before connection to the equipment.
• To avoid electric shock, do not operate this product in wet or damp conditions. Conduct measuring works only in dry clothing and rubber shoes, i. e. on isolating mats.
• Never touch the tips of the test leads or probe.
• Comply with the warning labels and other info on the equipment.
• Always start with the highest measuring range when measuring unknown values.
• Do not subject the equipment to direct sunlight or extreme temperatures, humidity or dampness.
• Do not subject the equipment to shocks or strong vibrations.
• Do not operate the equipment near strong magnetic fields (motors, transformers etc.).
• Keep hot soldering irons or guns away from the equipment.
• Allow the equipment to stabilize at room temperature before taking up measurement (important for exact measurements).

• Do not input values over the maximum range of each measurement to avoid damages of the meter.

• Do not turn the rotary function switch during voltage or current measurement, otherwise the meter could be damaged.

• Use caution when working with voltages above 35 V DC or 25 V AC. These Voltages pose shock hazard.
• Replace the battery as soon as the battery indicator "BAT" appears. With a low battery, the meter might produce false reading that can lead to electric shock and personal injury.
• Fetch out the battery when the meter will not be used for long period.
• Periodically wipe the cabinet with a damp cloth and mid detergent. Do not use abrasives or solvents.
• The meter is suitable for indoor use only
• Do not operate the meter before the cabinet has been closed and screwed safely as terminal can carry voltage.
• Do not store the meter in a place of explosive, inflammable substances.
• Do not modify the equipment in any way
• Do not place the equipment face-down on any table or work bench to prevent damaging the controls at the front.
• Opening the equipment and service – and repair work must only be performed by qualified service personnel
• Measuring instruments don't belong to children hands.

1.1. Input limits

Input limits	1000 V DC/ACrms less than 10 sec.
mA range AC/DC	400 mA AC/DC 1000 V / 0,5 A (fused)
A range	10 A AC/DC 1000 V / 10 A (fused)
Frequency, Resistance, Capacitance, Duty Cycle, Diode test, Continuity and Temperature	600 V AC/DCrms (P 3355) 1000 V AC/DCrms (P 3360)

1.2. 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 symbol advises the user that the terminals so marked must not be connected to a circuit point at which the voltage, with respect to earth ground, exceeds (in this case) 1000 V AC 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 particular hazardous voltages. For maximum safety, thermometer and its test leads should not be handled when these terminals are energized.

Indicates protection class II, double insulation

IP67 Dust- and waterproof

A The maximum current that can measure with this

mA terminal is 400mA AC/DC. This terminal is protected by 500mA / 1000V fuse

A The maximum current that can measure with this terminal is 10 A AC/DC. This terminal is protected by 10 A/1000 V fuse.

CAUTION!

Note on using the supplied safety test leads according the

IEC / EN 61010-031:2015:

Measurements in the field of overvoltage category CAT I or CAT II can be performed with test leads without sleeves with a maximum of up to 18mm long, touchable metallic probe, whereas for measurements in the field of overvoltage category CAT III or CAT IV test leads with put on sleeves, printed with CAT III and CAT IV must be used, and therefore the touchable and conductive part of the probes have only max. 4mm of length.

CAUTION!

This CAUTION symbol indicates a potentially hazardous situation, which if not avoided, may result in minor or moderate injury, or damage to the product or other property.

2. Technical Data

2.1. Specifications

Display P 3355

26 mm, 3 34 digit, 4000 counts with automatic polarity indication and backlight

P 3360

19 mm, 4 34 digit, 40000 county with automatic polarity indication, backlight and 42 segment bargraph

Overrange indicator: "OL"

Low battery indication: Battery symbol indicates low battery condition (P 3360)

Measuring rate: 2 times / sec.

Auto / manual Ranging

Auto power off: about 15 min.

P 3360: It is possible to turn off the APO (find on page 53)

Overload protection: on all ranges

measuring functions: True RMS measurement (only P 3360)
Auto- or manual range selection
Data Hold
Relative zero
Min/Max and Peak-Hold (only P 3360)

Overload protection: on all ranges

Operating Temperature: 41^ to 104^ ( 5^ to 40^ )

Storage Temperature: -4°F to 140°F (-20...+60°C)

Accuracy Temperature: 64^ to 82^ (18°C to 28°C) to maintain guaranteed accuracy

Relative Humidity: < 80% operating

Dimensions (W x H x D): 85 x 185 x 55 mm

Weight: approx. 400 g

Power source: 9 V battery (Neda 1604)

Accessories supplied:

Operation manual, test leads, socket seals, Battery, K-type thermocouple, Adaptor for thermocouple, carrying case

2.2. Electrical Specifications

DC Volts

Model	Range	Resolution	Accuracy
P 3355	400 mV	100 μV	± 0,5% rdg. + 2 dgt
	4 V	1 mV	± 1,2% rdg. + 2 dgt
	40 V	10 mV
	400 V	100 mV
	1000 V	1 V	± 1,5% rdg. + 2 dgt
P 3360	400 mV	10 μV	± 0,06% rdg. + 2 dgt
	4 V	100 μV
	40 V	1 mV
	400 V	10 mV
	1000 V	100 mV	± 0,1% rdg. + 5 dgt

Overload protection 1000V AC/DC rms
Input Impedance: (P 3355) 7,8 MΩ / (P 3360) 10 MΩ

AC Volts

Model	Range	Resolution	Accuracy
P 3355	400 mV	100 μV	± 1,0% rdg. + 5 dgt
	4 V	1 mV	± 1,0% rdg. + 3 dgt
	40 V	10 mV
	400 V	100 mV
	1000 V	1 V
P 3360	400 mV	100 μV	± 1,0% rdg. + 5 dgt
	4 V	1 mV	± 1,0% rdg. + 3 dgt
	40 V	10 mV
	400 V	100 mV
	1000 V	1 V

Overload protection 1000V AC/DC rms
Input Impedance: (P 3355) 7,8 MΩ / (P 3360) 3 MΩ
AC Response: (P 3355) 50 to 400Hz / (P 3360) 50 to

1000Hz

DC Current

Model	Range	Resolution	Accuracy
P 3355	400 μA	0,1 μA	± 1,0 % rdg. + 3 dgt.
	4000 μA	1 μA	± 1,5% rdg. + 3 dgt.
	40 mA	10 μA
	400 mA	100 μA
	10 A	10 mA	± 2,5% rdg. + 5 dgt.
P 3360	400 μA	0,01 μA	± 1,0% rdg. + 3 dgt.
	4000 μA	0,1 μA
	40 mA	1 μA
	400 mA	10 μA
	10 A	1 mA

Overload protection: 0,5A / 1000V and 10A / 1000V
Max. Input: 400 mA / 10A
20 A for max. 10 sec. every 15 min. (P 3360)

AC current

Model	Range	Resolution	Accuracy
P 3355	400 μA	0,1 μA	± 1,5 % rdg. + 5 dgt.
	4000 μA	1 μA	± 1,8% rdg. + 5 dgt.
	40 mA	10 μA
	400 mA	100 μA
	10 A	10 mA	± 3,0% rdg. + 7 dgt.
P 3360	400 μA	0,1 μA	± 1,5% rdg. + 3 dgt.
	4000 μA	1 μA
	40 mA	10 μA
	400 mA	100 μA
	10 A	10 mA

Overload protection: 0,5A / 1000V and 10A / 1000V
Max. Input: 400mA / 10A
20 A for max. 10 sec. every 15 min. (P 3360)

AC Response : (P 3355) 50 to 400Hz /

(P 3360) 50 to 1000Hz

Resistance

Model	Range	Resolution	Accuracy
P 3355	400 Ω	100 mΩ	± 1,2% rdg. + 4 dgt.
	4 kΩ	1 Ω	± 1,0% rdg. + 2 dgt.
	40 kΩ	10 Ω	. ± 1,2% rdg. + 2 dgt.
	400 kΩ	100 Ω
	4 MΩ	1 kΩ
	40 MΩ	10 kΩ	± 2,0% rdg. + 3 dgt.
P 3360	400 Ω	10 mΩ	± 0,3% rdg. + 9 dgt.
	4 kΩ	100 mΩ	± 0,3% rdg. + 4 dgt.
	40 kΩ	1 Ω
	400 kΩ	10 Ω
	4 MΩ	100 Ω
	40 MΩ	1 kΩ	± 2,0% rdg. + 10 dgt.

Overload protection: 600 V DC/AC
rms

Capacitance

Model	Range	Resolution	Accuracy
P 3355	4 nF	1 pF	± 5,0% rdg. + 20 dgt
	40 nF	10 pF	± 5,0% rdg. + 7 dgt
	400 nF	100 pF	± 3,0% rdg. + 5 dgt
	4 μF	1 nF
	40 μF	10 nF
	100 μF	100 nF	± 5,0% rdg. + 5 dgt
P 3360	40 nF	1 pF	± 3,5% rdg. + 40 dgt
	400 nF	10 pF
	4 μF	100 pF	± 3,5% rdg. + 10 dgt
	40 μF	1 nF
	400 μF	10 nF
	4000 μF	100 nF	± 5,0% rdg. + 10 dgt
	40 mF	1 μF

Overload protection: 600 V DC/AC rms

Frequency

Model	Range	Resolution	Accuracy
P 3355	10 Hz	1 mHz	± 1,5% rdg. +5 dgt
	100 Hz	10 mHz
	1000 Hz	100 mHz	± 1,2% rdg.+3 dgt
	10 kHz	1 Hz
	100 kHz	10 Hz
	1000 kHz	100 Hz
	10 MHz	1 kHz	±1,5% rdg.+4dgt
P 3360	40 Hz	1 mHz	± 0,1% rdg. +1 dgt
	400 Hz	10 mHz
	4 kHz	100 mHz
	40 kHz	1 Hz
	400 kHz	10 Hz
	4 MHz	100 Hz
	40 MHz	1 kHz
	100 MHz	10 kHz	not specified

Overload protection: 600 V DC/AC

Sensitivity: <0,5V RMS at ≤1MHz /

3V RMS at >1MHz (P 3355)

Sensitivity: <0,8V RMS at ≤100kHz /

5V RMS at >100kHz (P 3360)

Duty cycle

Model	Range	Resolution	Accuracy
P 3355	0,1...99,9 %	0,1%	± 1,2% rdg. +2 dgt.
	Pulse width: >100 μs,< 100 msFrequency: 5Hz-150kHzSensitivity: <0,5Vrms
P 3360	0,1...99,9 %	0,01%	+/- 1,2% rdg. +2 dgt.
	4-20mA%-25...125%	0,01%	+/-50 dgt.
		0 mA = -25%; 4 mA = 0%;20 mA = 100%, 24 mA = 125%
	Pulse width: >100 μs,< 100 msFrequency: 5Hz-150kHzSensitivity: <0,5Vrms

Overload protection: 600 V DC/AC

rms

Temperature

Model	Range	Resolution	Accuracy
P 3355	-20 ... +760°C	1°C	± 3,0% rdg. + 3,0°C
	-4...+1400°F	1°F	± 3,0% rdg. + 3,0°F.
P 3360	-50...+1000°C	1°C	± 1,0% rdg. + 2,5°C
	-58...+1832°F	1°F	± 1,0% rdg. + 4,5°F

Overload protection: 600 V DC/AC

rms

Temperature Accuracy : Probe accuracy not included.

Continuity

Model	Audible Threshold	Test current
P 3355	< 150 Ω	<0,3 mA
P 3360	< 35 Ω	< 0,35 mA

Overload protection: 600 V DC/AC

rms

Diode Test

Model	Test current	Open circuit voltage
P 3355	0,3 mA	1,5 V
P 3360	0,9 mA	2,8 V

Overload protection: 600 V DC/AC

rms

3. Controls and Jacks P 3355

1. LCD Anzeige /LCD Display
2. Range pushbutton
3. Frequency %Duty button
4. Mode pushbutton
5. Data Hold
6. Relative pushbutton
7. Backlight pushbutton
8. Function switch
9. 10A (positive) input jack
10. A / mA (positive) input jack
11. Positive input jack for voltage, Hz, Duty cycle, Ohms, Diode, Continuity, Capacitance, and temperature measurements
12. COM (negative) input jack

1. LCD Display
2. Relative pushbutton
3. Range pushbutton
4. Mode pushbutton
5. Function switch
6. A / mA / 10A (positive) input jack
   7.COM (negative) input jack
7. Positive input jack for voltage, Hz, Duty cycle, Ohms, Diode, Continuity, Capacitance, and temperature measurements
8. Data Hold and Backlight pushbutton
9. PEAK button
10. MIN/MAX button

3.1. Symbols in the LCD Display

·)) Continuity

->| Diode test

BAT Battery status

n nano (10

micro (10

m milli (10

A current

k kilo (10 3)

F capacitance (Farads)

M mega (10 6)

Resistance

Hz Frequency

% Duty cycle

AC Alternating current

DC Direct current

°F Temperature in Fahrenheit

^ C Temperature in Centigrade

MAX Maximum

MIN Minimum

PEAK Peak hold

V voltage

REL Relative

AUTO Autoranging

HOLD Display hold

4. Operating instructions

Warning!

Risk of electrocution. High-voltage circuits, both AC and DC are very dangerous and should be measured with great care.

1. Always push the power pushbutton to the OFF position when the meter is not in use. This meter has Auto OFF that automatically shuts the meter OFF if 15 minutes elapse between uses.

2. If "OL" appears in the display during a measurement, that value you are measuring exceeds the range you have selected. Change to higher range.

Note:

On some low AC and DC voltage ranges, with the test leads not connected to a device, the display may show a random, changing reading. This is normal and is caused by the high-input sensitivity. The reading will stabilize and give a proper measurement when connected to a circuit.

1. Press the "POWER" pushbutton to turn the meter on and off.

4.1. Autoranging / manual range selection

When the meter is first turned on, it automatically goes into Auto-Ranging. 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 the range be manually held, perform the following:

1. Press the "RANGE" button. The "AUTO" indicator will extinguish and the currently selected range will be held.

2. Press the "RANGE" button to step through the available ranges until you select the range you want.

3. Press and hold the "RANGE" button for 2 seconds to exit the manual ranging mode and return to "AUTO" mode.

4.2. Backlight

The backlight function is used to illuminate the display when the meter is used at night or in dimly lighted area.

1. Press the "HOLD" button (P 3355) or the backlight button (P 3360) for more than 2 seconds, the "HOLD" indicator will appear and backlight will be activated.

Note (P 3360):

The backlight automatically turns off after 30 seconds.

1. Press the "HOLD" button momentarily to remove the "HOLD" function. (P 3360).
2. Press the "HOLD" button (P 3355) or the backlight button (P 3355) for more than 2 seconds to remove the backlight function.
3. Press the "HOLD" button momentarily to remove the "HOLD" function. (P 3360)

4.3 Auto Power Off

The auto power off function will turn the meter off after 15 minutes operation time. To disable this function (only P 3360) press and hold the MODE button and then power on the meter. The display shows "APO d ". To activate the APO function the meter must be power off. Then power on the meter.

5. Measuring

5.1. Relative

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 and the measured value.

1. Perform any 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.

5.2. Data Hold

The data hold function allows the meter to "freeze" a measurement for later reference.

1. Press the "HOLD" button to freeze the display, the "HOLD" indicator will appear in the display.
2. Press the "HOLD" button to return to normal operation.

5.3. Peak function

The PeakTech 3360 offers the "PEAK" function, which records the peak value of an alternating voltage. The meter can have negative or positive peaks lasting a millisecond Capture (1 ms).

1. Press the PEAK button and "PEAK" and "MAX" appear in the display. The meter updates this display each time a higher positive peak value occurs.
2. Press the PEAK button again and "MIN" appears in the display. The meter updates this display each time a lower positive peak value occurs.
3. Press and hold the PEAK button for longer than 1 second to exit "Peak" mode.

The "automatic switch-off" function is automatically deactivated in this mode.

5.4. Minimum and maximum value function

1. Press the MAX / MIN button to activate the maximum value function. The display symbol "MAX" appears. The measuring device shows the maximum display and holds this value until a new maximum value is measured.
2. Press the MAX / MIN button again and the "MIN" symbol appears. The measuring device shows the minimum value display and holds this value until a new minimum value is measured.
3. To exit MAX / MIN mode, press and hold the MAX / MIN button for approx. 2 seconds.

5.5.4 - 20mA measuring function

4 - 20 mA currents are used as control signals for industrial applications and can be measured with this multimeter.

1. Connect the device to the current loop to be measured as described for a mA (milliampere) measurement.
2. Set the function switch to the 4-20mA% position
3. The meter will display the current loop as a percentage:

0 mA = -25%

4 mA = 0%

20mA = 100%

24mA = 125%

5.6. DC Voltage measurements

Caution: Do not measure DC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur during the ON or OFF operations that can damage the meter.

1. Set the function switch to the "V" position.

2. If "AC" appears in the display, press the "MODE" pushbutton until "DC" appears in the display.

3. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.
4. Touch the test probe tips to the circuit under test. Be sure to observe the correct polarity (red lead to positive, black lead to negative).
5. Read the voltage in the display. The display will indicate the proper decimal point and value. If the polarity is reserved, the display will show (-) minus before the value.

5.7. AC voltage measurements

Warning:

Risk of Electrocution. The probe tips may not be long enough to contact the live parts inside some 230 V 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 contacting 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 during the ON or OFF operations that can damage the meter.

1. Set the function switch to the "V" position.
2. Press the "MODE" button until "AC" appears in the display.
3. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.
4. Touch the test probe tips to the circuit under test.
5. Read the voltage in the display. The display will indicate the proper decimal point, value and symbol.

5.8. DC current measurement

1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 4000 A DC, set the function switch to the "μA" position and insert the red test lead banana plug into the mA-μA jack.
3. For current measurements up to 400 mA DC, set the function switch to the "mA" position and insert the red test lead banana plug into the mA-µA jack.
4. For current measurements up to 10 A DC, set the function switch to the 10 A position and insert the red test lead banana plug into the 10 A jack.
5. Press the "MODE" button until "DC" appears in the display.
6. Remove power from the circuit under test and open 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 and 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. The display will indicate the proper decimal point, value and symbol.

5.9. AC current measurements

Warning:

To avoid electric shock do not measure AC current on any circuit whose voltage exceeds 250 V AC.

1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 4000 A AC, set the function switch to the "μA" position and insert the red test lead banana plug into the mA-μA jack.
3. For current measurements up to 400 mA DC, set the function switch to the "mA" position and insert the red test lead banana plug into the mA-µA jack.
4. For current measurements up to 10 A DC, set the function switch to the 10 A position and insert the red test lead banana plug into the 10 A jack.
5. Press the "MODE" button until "AC" appears in the display.
6. Remove power from the circuit under test and open 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 and 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. The display will indicate the proper decimal point, value and symbol.

5.10. 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 "OHM" position.
2. Insert the black test lead banana jack into the negative COM jack and the red test lead banana plug into the positive jack.
3. 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.
4. Read the resistance in the display. The display will indicate the proper decimal point, value and symbol.

When you short the test leads in the 400 range, your meter display a small value (no more than 0.3 ). This value is due to your meter's and test leads internal resistance. Make a note of this value and subtract it from small resistance measurements for better accuracy.

5.11. Continuity 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 "OHM" position.
2. Insert the black test lead banana jack into the negative COM jack and the red test lead banana-plug into the positive jack.

3. Press the "MODE" push button until the " ") symbol appears in the display.

4. Touch the test probe tips to the circuit or wire you wish to check.

5. If the resistance is less than 150 ohms (P 3355) or 35 ohms (P 3360), the audible signal will sound. The display will also show the actual resistance.

5.12. Diode test

Warning:

To avoid electric shock, do not test any diode that has voltage on it.

1. Set the function switch to " position.
2. Press the "MODE" button until the " symbol appears in the display.
3. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive jack.
4. Touch the test probe tips to the diode or semiconductor junction you wish to test. Note the meter reading.
5. Reverse the probe polarity by switching probe position. Note this reading.
6. The diode or junction can be evaluated as follows:

A: If one reading shows a value and the other reading show OL, the diode is good.
B: If both readings are OL, the device is open.
C: If both readings are very small or 0, the device is shorted.

Note: The value indicated in the display during the diode check is the forward voltage.

5.13. Frequency / Duty cycle measurement

1. Set the function switch to the "Hz" position.
2. Insert the black test lead banana jack into the negative COM jack and the red test lead banana plug into the positive Hz jack.
3. Touch the test probe tips to the circuit under test.
4. Read the frequency in the display. The digital reading will indicate the proper decimal point, symbols (Hz, kHz, MHz) and value.
5. Press the "MODE" button to display duty cycle in %.

5.14. 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 function switch to the "CAP" position.
2. Insert the black test lead banana jack into the negative COM jack and the red test lead banana plug into the positive jack.
3. Touch the test leads to the capacitor to be tested. The display will indicate the proper decimal point, value and symbol.

5.15. Temperature measurements

Warning:

To avoid electric shock, disconnect both test probes from any source of voltage before making a temperature measurement.

Insert the adapter in the input socket for temperature measurements.

Insert the K-type thermocouple into the temperature socket, making sure to observe the correct polarity. Touch the temperature probe head to the part whose temperature you wish to measure. Keep the probe touching the part under test until the reading stabilize (about 30 seconds). Read the temperature in the display. The digital reading will indicate the proper decimal point and value.

Warning:

To avoid electric shock, be sure the thermocouple has been removed before changing to any other measurement function.

6. Replacing the fuses

WARNING!

To avoid electric shock, disconnect all the test probes before removing the fuse. Replace only with the same type of fuse. Not note remove the top cover. Service should be performed only by qualified personnel.

CAUTION!

For continued protection against fire or other hazard, replace only with fuse of the specified voltage and current ratings.

Follow these steps to replace the fuse:

1. Press ON/OFF button to turn the meter off and disconnect the test probes.
2. Remove the Battery cover (screws B) and the battery.
3. Remove the back cover by unscrewing the 6 screws (A)
4. Remove the blown fuse. Use only a fuse with the proper size and value 500mA/1000V (6,3x32mm) or 10A/1000V (10x38mm)
5. Replace the back cover, the Battery and the battery cover.

WARNING!

Do not operate your meter until the back cover is in place and fully closed.

7. Maintenance

Warning:

To avoid electric shock, disconnect the test leads from any source of voltage before removing the back cover or the battery/fuse door.

Warning:

To avoid electric shock, do not operate your meter until the battery/ fuse door are in place and fastened securely. This multimeter is designed to provide years of dependable service, if the following care instructions are performed.

1. Keep the meter dry. If it gets wet, wipe it off.
2. Use and store the meter in normal temperatures. Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts.
3. Handle the meter gently and carefully. Dropping it can damage the electronic parts or the case.
4. Keep the meter clean. Wipe the case occasionally with a damp cloth. Do not use chemicals, cleaning solvents or detergents.
5. Use only fresh batteries or the recommended size and type. Remove old or weak batteries so they do not leak and damage the unit.
6. If the meter is to be stored for a long period of time, the batteries should be removed to prevent damage to the unit.