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72-8400
User Manual
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Tenma 72-8400 User Manual

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Page 1
Model 72-8400
OPERATING MANUAL
Page 2
Chapter Title Page
1 Before You Start
2 Using The Instrument
3 Making Measurements
A. Scope Mode i. Setting up the Sleep Mode, Contrast, Beep ii. ACV, DCV, Hz, ACV and DCA Range iii. Trigger function iv. Waveform data save and recall B. Digital Multimeter Mode i. Measuring Voltage ii. Measuring Current iii. Measuring Resistance iv. Testing Diodes v. Testing Continuity vi. Measuring Frequency / Duty Cycle
Overview Inspection Safety Information Rules For Safe Operation International Electrical Symbols
Reading the screen The Meter Structure Functional Buttons
Table of Contents
6 6 7 8 8 10 11 11 12 13 15 15 15 17 19 19 20 20 22 27 29 31 33
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Table of Contents
Chapter Title Page
vii. Measuring Capacitance
4 Using Software 5 Maintaining The Instrument
A. General Service B. Replacing the Fuses C. Replacing the Battery
6 Specifications
Safety and Compliances Physical Specifications General Specifications (Digital Multimeter) General Specifications (Scope) Feature Summary Basic Specifications (Digital Multimeter) Basic Specifications (Scope) Detailed Accuracy Specifications
A.
DC Voltage
B.
AC Voltage
C.
DC Current
D.
AC Current
E.
Resistance
F.
Diode Test
G.
Continuity Test
35 37 38 38 39 40 41 41 42 43 43 44 44 45 45 46 46 47 48 49 49 50
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Chapter Title Page
H. Frequency and Duty Cycle % I. Capacitance
Table of Contents
50 51
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List of Tables
Table Title Page
1-1 Inspection 1-2 International Electrical Symbols 2-1 Reading the Screen 2-2 Functional Buttons
7 10 11 13
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Figure Title Page
2-1 Meter Structure 2-2 Functional Buttons 3-1 Waveform Display 3-2 Voltages Measurement 3-3 3-4 mA Range Measurement 3-5 10A Range Measurement 3-6 Resistance Measurement 3-7 Diode Test 3-8 Continuity Test 3-9 Frequency / Duty Cycle Measurement 3-10 Capacitance Measurement 5-1 Fuse Replacement 5-2 Battery Replacement
µA Range Measurement
List of Tables
12 13 17 21 23 24 25 27 29 31 33 35 39 40
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Overview
This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and observe all the Warnings and Notes strictly.
Warning To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safe Operation” carefully before using the Meter.
Scope Digital Multimeter 72-8400 (hereafter referred to as “the Meter”) is a 3999 count, 3 3/4 digit device which adopts digital control techiques with oscilloscope and multimeter functions all in one.
Scope mode is a complete intelligent measurement system including signal input, sampling, data process, auto search and waveform save and recall. It has
Chapter 1
Before Y ou Start
bandwidth of 8MHz, and real-time sample rate of 40MS/s (mega-samples per second). It can measure
AC/DC engine, transducer, circuit, control, UPS and industrial equipment. It is an ideal tool in the professional
service industry.
In Digital Multimeter mode, this unit can measure AC
voltage and current, DC voltage and current, Resistance, Capacitance, Frequency, Duty Cycle, Diodes and Continuity.
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Inspection
Open the package case and take out the Meter. Check the items shown on Table 1-1 carefully for missing or damaged parts:
Table 1-1. Unpacking Inspection
Item Description Qty
1 2 3 4 5 6 7 8 9
10
English Operating Manual USB interface cable CD-ROM (Installation Guide & Computer Interface Software) Test Lead Alligator Clip Power Adaptor
1.5V Batteries (R6) Carrying bag Scope Probe (available at extra cost) BNC probe (available at extra cost)
In the event you find items missing or damaged, please contact your dealer immediately.
1 piece 1 piece 1 piece 1 pair 1 piece 1 piece 4 pieces 1 piece 1 piece
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Safety Information
This Meter complies with the standards IEC61010 safety measurement requirement: in pollution degree 2, overvoltage category (CAT. II 1000V, CAT.III 600V) and double insulation.
CAT.II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient overvoltages than CAT. III CAT. III: Distribution level, fixed installation, with smaller transient overvoltage than CAT. IV
Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired.
In this manual, a Warning identifies conditions and actions that may pose hazards to the user, or may damage the Meter or the equipment under test.
A Note identifies the information that user should pay attention to.
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International electrical symbols used on the Meter and in this Operating Manual are explained on page 10.
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 damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the insulation around the connectors. Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged test leads with identical model number or electrical specifications before using the Meter. Do not apply more than the 1000V rms between any terminal and ground to avoid electric
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shock or damage to the Meter.
Place the rotary switch in the desired position
l
prior to making measurements. Changing
during measurement should be avoided to
prevent damage of the Meter.
When working at an effective voltage
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over 60V DC or 42V rms AC, special care should be taken for there is danger of electric shock. Use the proper terminals, function, and range
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for your measurements. Do not use or store the Meter in an environment
l
of high temperature, humidity, explosive, inflammable and strong magnetic field. The performance of the Meter may deteriorate after dampened. When using the test leads, keep your fingers
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behind the finger guards. Disconnect circuit power and discharge all high-
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voltage capacitors before testing resistance, continuity, diodes. Before measuring current, check the Meter’s
l
fuses and turn off power to the circuit before
connecting the Meter to the circuit. Replace the battery as soon as the battery
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indicator Meter might produce false readings that can lead to electric shock and personal injury. When servicing the Meter, use only the same
l
model number or identical electrical specifications replacement parts. The internal circuit of the Meter shall not be
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altered at will to avoid damage of the Meter and any accident. Soft cloth and mild detergent should be used to
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clean the surface of the Meter when servicing. No abrasive and solvent should be used to prevent the surface of the Meter from corrosion, damage and accident. The Meter is suitable for indoor use.
l
Turn the Meter off when it is not in us e and take
l
out the battery when not using for a long time. Constantly check the battery as it may leak when
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it has been used for some time, replace the battery as soon as leaking appears. A leaking
battery will damage the Meter.
appears. With a low battery, the
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lUnder the influence of Radiated Radio-Frequency Electromagnetic Field phenomenon, this model may have a measurement error of up to 20%. The
measurement function will return to normal once
the interference is removed.
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International Electrical Symbols
Symbols used on the Meter and in this manual are explained in Table1-2.
Table 1-2. International Electrical Symbols
AC or DC DC Measurement AC Measurement Continuity Test Diode Ground Double Insulated Warning. Refer to the Operating Manual
Low Battery Conforms to Standards of European Union
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Reading the Screen
The screen displays the menu that provides the following choices available:
Chapter 2
Using the Instrument
Table 2-1. Reading the Screen
Display
Contrast Auto Off BK Light BEEP ENTER
MOVE MOVE RANG
Table 2-1. Reading the Screen
Description
The degree of contrast Sleep mode time Display backlight Beeper on and off Confirm Increase Decrease Waveform moves up Waveform moves down Increase a range
Display
RANG BASE BASE BASE > BASE < TRIG TRIG SLOP AUTO NORM SHOT
Description
Decrease a range Increase a time base Decrease a time base Waveform moves right Waveform moves left Trigger moves up Trigger moves down Trigger slope adjustment Auto trigger mode Normal trigger mode Single trigger mode
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The Meter Structure
The Figure 2-1 shows the Meter structure.
1. USB Terminals
2. LCD Display
3. Functional Buttons
4. Rotary Switch
5. Power adaptor Input Terminals
6. 10A Input Terminal
7. mA
µA Input Terminals
8. COM Input Terminal
9. Other Input Terminals
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Figure 2-1. Meter Structure
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Functional Buttons
The buttons activate features that augment the function selected with the rotary switch. The buttons are shown in Table 2-2.
Figure 2-2. Functional Buttons
Buttons F1, F2, F3 and F4 Range
Time
Trig
Auto
Table 2-2. Functional Buttons
Description
Software functional buttons, details please refer to the below. Under scope mode, Press Range button to switch between DC and AC measurement Under scope mode, press Time button to set the X-axis of time base. Under scope mode, press Trig button to change the trigger mode. In multimeter mode: Press Auto button to enter autoranging mode when measuring resistance, voltage and current. This button is invalid when measuring capacitance, diode, continuity buzzer and capacitance. In scope mode: Press Auto button to set the amplitude and time base to auto.
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Table 2-2. Functional Buttons
Buttons
Mode
Set
Save/Call
Hold
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Description
To switch between waveform display (scope mode) and digital reading (multimeter mode). This button is only valid when under voltage, frequency, current mode. Press Set button to set the auto power off, backlight, contrast and beep Under scope mode, press Save/Cal to store and recall data. Press Hold button to enter or exit hold mode.
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Introduction
Chapter 3 explains how to make measurements. You could turn the Meter off by turning to OFF position
or set up the sleep mode from 1-30 minutes. Please ensure the Meter is not under sleep mode if you turn the Meter on without display.
To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as
soon as the battery indicator “
” appears.
Chapter 3
Making Measurement
Based on the working environment to set up sleep mode, contrast, beep Press Set button to set the auto power off, display backlight, contrast and beep
Auto off Bk Light Contrast Beep
F1 F2 F3 F4
F1: Set auto power off time
Auto off
F1 F2 F3 F4 The time level is from OFF, 1 to 30 minutes. Press F4 to confirm, save and return. Press functional button to exit and the setting remains unchanged.
15 ENTER
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F2: Set the Display Backlight
BK Light
F1 F2 F3 F4
The brightness level from 0 to 31. Press F4 to confirm, save and return. Press functional buttons to exit, the setting is kept, but will not save. The setting will be lost after power off.
F3: Set the LCD contrast
Contrast
F1 F2 F3 F4
The contrast level from 0 to 31. Press F4 to confirm, save and return. Press functional buttons to exit, the setting is kept, but will not save. The setting will be lost after power off.
15 ENTER
15 ENTER
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F4: Set the beep feature, it can only be used under
resistance, diode and continuity measurement.
Beep ON OFF ENTER
F1 F2 F3 F4
F2 : to turn the beep on F3 : to turn the beep off F4 : to confirm , save and return
Press functional buttons to exit, the setting is kept, but
will not save. The setting will be lost after power off.
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Turn the rotary switch to ACV, DCV, Hz, ACA or DCA range, the Meter displays digital reading (Multimeter mode). Press Mode to switch to waveform display (scope mode) as below Figure 4. When entering scope mode, time base is auto trace, the amplitude is manual set, you may need to re-set them. You could set the trigger level as well if it is needed. Details of measurement operation of ACV, DC, Hz, ACA or DCA can be seen from B. Digital Multimeter Mode:
Press Range to switch between DC and AC measurement. When the frequency and amplitude of a waveform is unknown, press Auto :
When the amplitude is set to auto, the amplitude indicator will be shown white text in black background. When the amplitude is set to manual, the amplitude indicator will be shown black text in white background. When the time base is set to auto, the time base indicator will be shown white text in black background. When the time base is set to manual trace, the time base indicator will be shown black text in white background. When the time base is between 20ms - 100ns, it is possible to set the auto. When the time base is between 50ms - 5s, the auto feature will be in valid.
Figure 3-1. Waveform Display
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Y -axis adjustment: Press Range button under scope mode, the corresponding functional button:
Move
F1 F2 F3 F4
F1: move up the waveform F2: move down the waveform F3: go up range F4: go down a range
The auto set feature will be off when changing the measurement mode
Press Time button under scope mode, the corresponding functional button:
Base Base Base < Base >
F1 F2 F3 F4
Move Rang Rang
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F1: increase the number of periods F2: decrease the number of periods. F3: trigger point move left F4: trigger point right move
The auto set feature will be off when changing the measurement mode.
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Press Trig button under scope mode, the corresponding function buttons:
Trig
F1 F2 F3 F4
F1: move the trigger level up F2: move the trigger level down F3: select the trigger mode: auto, normal or single F4: slope adjustment: rise or fall
iv. Waveform data save and recall Press Save/Call button under scope mode, the
corresponding functional buttons:
Save/Call
F1 F2 F3 F4
F1: save or recall F2 and F3: select location (location from 0-9, total
Trig Auto/Norm/Shot Slop Rrise/Fall
1 Enter
10 location) F4: confirm
When saving the data, it will overwrite the current data in the location no matter that location has data or not. If you recall the location has no data, the meter will appear error message, you need to press HOLD button to continue measurement, If you recall the location has data, it will save the current setting and display the data, the LCD top left shows REV to indicate recalling mode is on. Press HOLD button to return to working mode and continue measurement. You could continue recalling under recall mode or save the data. Recall mode can be used under any scope mode. For example, it is possible to recall the waveform or data saved from voltage or frequency mode when the meter is under current measurement mode. Recall mode can be worked under any waveform mode. For example: the Meter is at current mode but recalling the waveform or data which are saved under voltage or frequency mode. The Meter must
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be returned to working mode to carry out measurement.
In order to have more accurate waveform, user can buy an optional BNC probe and scope probe to decrease
signal attenuation. The scope probe directly connect to the BNC probe input.
When measuring voltage and frequency signal, connect the BNC black probe to the COM input terminal and the red probe to the voltage terminal.
When measuring current signal, connect BNC black probe to the COM terminal and the red probe to mA terminal.
Don’t connect the BNC probe to the 10A terminal.
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B. Digital Multimeter Mode
Warning
To avoid personal injury or damage to the Meter from electric shock, please do not attempt to
measure voltages higher than DC 1000V, AC 750V, although readings may be obtained.
To measure voltages, set up the Meter as Figure 3­2 and do the following:
1. Insert the red test lead into the V terminal and the black test lead into the COM terminal.
2. Set the rotary switch to V
3. Connect test leads across with the object being measured.
4. The measured value shows on the display.
5. Press MODE button to toggle between Multimeter mode and Scope mode.
6. Press F1 to toggle between AC and DC voltage measurement.
.
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Figure 3-2. Voltages Measurement
When measuring voltage, the corresponding functional buttons
AC / DC REL Rang
Rang
F1 F2 F3 F4
F1: toggle between AC or DC F2: relative mode (REL will be displayed at the right bottom of the LCD when it is on) F3: select a range up F4: select a range down
Note:
After changing the measurement mode, the autoranging will be off automatically and the AUT O will be disappeared at the bottom left of the LCD. When voltage measurement has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads away from the input terminals of the Meter.
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Warning If the fuse burns out during measurement, the Meter may be damaged or the operator himself may be
injured.
To avoid possible damage to the Meter or to the equipment under test, check the Meter’s fuses before measuring current. Use proper terminals, function, and range for the measurement. Never place the testing leads in parallel with any circuit or component when the leads are plugged into the current terminals.
Turn off power to the circuit before test leads are connected in series to the return circuit to be tested.
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To measure ACµA or DCµA current, set up the Meter as Figure 3-3 and proceed as follows:
Figure 3-3. µA Range Measurement
1. Insert the red test lead into the
µmA terminal and
black test lead into the COM terminal.
2. Set the rotary switch to
µA .
3. Connect the test lead in series with the return circuit to be tested.
4. The measured value shows on the display.
5. Press MODE button to toggle between Multimeter mode and Scope mode.
6. Press F1 to toggle between AC and DC current measurement.
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To measure ACmA or DcmA currents, set up the Meter as Figure 3-4 and proceed as follows:
Figure 3-4. mA Range Measurement
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1. Insert the red test lead into the
µAmA terminal and
black test lead into the COM terminal.
2. Set the rotary switch to mA .
3. Connect the test lead in series with the return circuit to be tested.
4. The measured value shows on the display.
5. Press MODE button to toggle between Multimeter mode and Scope mode.
6. Press F1 to toggle between AC and DC current measurement.
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To measure AC 10A or DC 10A current, set up the Meter as Figure 3-5 and proceed as follows:
1. Insert the red test lead into the 10A terminal and black test lead into the COM terminal.
2. Set the rotary switch to A
.
3. Connect the test lead in series with the return circuit to be tested.
4. The measured value shows on the display.
5. Press MODE button to toggle between Multimeter mode and Scope mode.
6. Press F1 to toggle between AC and DC current measurement.
Figure 3-5. 10A Range Measurement
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When measuring current, the corresponding functional buttons:
AC / DC REL Rang Rang
F1 F2 F3 F4
F1: toggle between AC or DC F2: relative mode (REL will be displayed at the right bottom of the LCD when it is on) F3: select a range up F4: select a range down
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Note
After changing the measurement mode, the autoranging will be off automatically and the AUTO
will disappear from the bottom left of the LCD. If the value to be measured is unknown, use the maximum measurement position and reduce the range step by step until a satisfactory reading is obtained. When the measured current is measurement is allowed. When the measured current is between 5A-10A, continuous measurement 10 seconds and interval more than 15 minutes. When current measurement has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads away from the input terminals of the Meter.
5A, continuous
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Warning
To avoid possible damage to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring resistance.
To measure resistance, set up the Meter as shown in Figure 3-6 and follow the following procedure:
Figure 3-6. Resistance Measurement
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1. Insert the red test lead into the Ω terminal and the black test lead into the COM terminal.
2. Set the rotary switch to
3. Connect the test leads across with the object being measured.
4. The measured value shows on the display.
When measuring resistance, the corresponding functional buttons:
RES REL Rang
F1 F2 F3 F4
F1: toggle to diode mode F2: relative mode F3: select to a range up F4: select to a range down
Ω
Rang
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Note
When measuring low resistance, the test leads can add 0.1Ω to 0.2Ω of error to resistance measurement. To test the leads, touch the probe tips together and read the resistance of the leads. Take the reading obtained to subtract the resistance of the leads to get the final reading. For high-resistance measurement (>1MΩ) or low resistance measurement (<40Ω), it normally
requires everal seconds to obtain a stable reading. The LCD displays “OL” indicating open-circuit without input. When resistance measurement has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads away from the input terminals.
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Warning To avoid personal injury, please do not attempt to input voltages higher than 60V DC or 42V rms AC.
To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before testing diodes.
Use the diode test to check diodes, transistors, and other semiconductor devices. The diode test sends a current through the semicondutor junction, then measure the voltage drop across the junction. A good silicon junction drops between 0.5V and 0.8V
To test the diode out of a circuit, set up the Meter as Figure 3-7 and proceed as follows:
Figure 3-7. Diode Test
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1. Insert the red test lead into the Ω terminal and the black test lead into the COM terminal.
2. Set the rotary switch to .
3. For forward voltage drop readings on any semiconductor component, place the red test lead on the component’s anode and place the black test lead on the component’s cathode. The red test lead polarity is “+” while the black test lead polarity is “— “. The measured value shows on the display.
When measuring diode, the corresponding functional buttons:
DIODE REL
F1 F2 F1: toggle to continuity buzzer F2: relative mode
Ω
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Note
Connect the test leads to the proper terminals as said above to avoid error display. The LCD will display OL indicating either open circuit or wrong polarity connection. The unit of diode is volt (V), displaying the positive­connection voltage-drop value. When diode testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove the test leads from the input terminals.
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Warning
To avoid personal injury, please do not attempt to input voltage higher than 60V DC or 42V rms AC.
To avoid possible damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring continuity.
To test for continuity, set up the Meter as Figure 3-8 and do the following:
Figure 3-8. Continuity Test
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1. Insert the red test lead into the W terminal and the black test lead into the COM terminal.
2. Set the rotary switch to .
3. Connect the test leads across with the object being tested.
4. The tested circuit overload resistance value shows on the display.
5. The beeper comes on continuously for closed conditions, that is test resistance
6. The beeper does not sound when the test resistance is 100 ohms
When measuring continuity buzzer, the corresponding functional buttons:
CONTINUITY REL
F1 F2
F1: toggle to resistance measurement mode F2: relative mode
Ω
10 ohms.
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Note
When continuity testing has been completed, disconnect the connection between the test leads and the circuit under test and remove the leads from the input terminals.
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Warning
To avoid personal injury, please do not attempt to input voltage higher than 60V DC or 42V rms AC.
To avoid possible damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring continuity.
To test for continuity, set up the Meter as Figure 3-8 and do the following:
Figure 3-8. Continuity Test
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Note
The requirement of Input amplitude “a” is as follows:
When 1MHz: 300 mV a 30Vrms;
1MHz: 600 mV a 5Vrms It is normal to have few seconds run time when switch from other functions to these functions. When Hz or duty cycle measurement has been completed, disconnect the connection between the test leads and the circuit under test and remove the test leads from the input terminals.
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Warning
To ensure accuracy, the Meter internally discharges the capacitor under test.
To avoid damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance.
To measure capacitance, set up the Meter as shown in Figure 3-10 and proceed as follows:
Figure 3-10. Measuring Capacitance
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1.
Insert the red test lead into theterminal and the black test lead into the COM terminal.
2.
Set the rotary switch to measurement mode, the Meter may display a fixed reading which is a internal distributed capacitor value. For testing less than 40nF capacitor, the tested value must subtract the internal distributed capacitor value to maintain the accuracy.
3.
To improve the accuracy, press F2 REL with the test leads open to subtract the residual capacitance of the Meter and the test leads.
4.
It is recommended to use as short as test lead carrying out measurement to reduce the effect of internal distributed capacitor.
When measuring capacitance, the corresponding functional buttons:
Capacity REL
F1 F2
F2: relative mode
Note
Capacitors larger than 10 F take longer time. If the tested capacitor has polarity, connect the red test lead to positive side and black test lead to negative side. When capacitance measurement has been completed, disconnect the connection between the test leads and the circuit under test and remove the test leads away from the input terminals of the Meter.
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When using the Software, please refer to the Installation Guide of the included CD-ROM.
Chapter 4
Using Software
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Chapter 5
Maintaining The Test Tool
This chapter provides basic maintenance information including battery and fuse replacement instruction.
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.
A. General Service
l
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.
l
T o clean the terminals with cotton bar with detergent, as dirt or moisture in the terminals can affect readings.
l
Turn the Meter to OFF when it is not in use.
l
Take out the battery when not using for a long time.
l
Do not use or store the Meter in a place of humidity,
38
high temperature, explosive, inflammable and strong magnetic field.
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B. Replacing the Fuses
1.Remove the battery compartment
Figure 5-1. Fuse Replacement
2.Remove the case bottom
3.Install fuses with correct type and specification
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.
Follow Figure 5-1 and proceed as follows to replace the Meter’s fuse:
Turn the rotary switch to OFF and remove all
l
connections from the terminals. Remove the screw from the battery compartment,
l
and separate the battery compartment from the case bottom. Remove the three screws from the case bottom,
l
and separate the case bottom from the case top. Remove the fuse by gently prying one end loose,
l
then take out the fuse from its bracket. Install ONLY replacement fuses with the identical
l
type and specification as follows and make sure the fuse is fixed firmly in the bracket. Fuse 1: F0.5AH/250V, ø5 x 20mm Fuse 2: F10AH/250V, ø5 x 20mm Rejoin the case bottom and case top, battery
l
compartment and case bottom, and install the 5 screws.
Replacement of the fuses is seldom required. Burning of a fuse always results from improper operation.
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C. Replacing the Battery
Figure 5-2. Battery Replacement
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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.
Follow Figure 5-2 and proceed as follows to replace the battery:
Turn the rotary switch to OFF and remove all connections from the terminals. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom. Replace with 4 pieces new 1.5V (R6P) batteries. Rejoin the case bottom and battery compartment, and reinstall the screw.
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Safety and Compliances
Chapter 6
Specifications
Maximum Voltage between any Terminal and Grounding Certification Compliances
Fused Protection for mA input terminal: Fused Protection for 10A input terminal:
Refer to different range input protection voltage
IEC 61010 CAT. II 1000V, CAT.III 600V overvoltage and double insulation standard F0.5AH/250V, ø5×20mm F10AH/250V, ø5×20mm
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Physical Specifications
Display (LCD) Operating Temperature Storage Temperature Relative Humidity
Altitude
Battery Type
Electromagnetic Compatibility
Dimensions (H x W x L) Weight
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Digital: 3999 count display ; updates 2-3 times / second.
o
0
C~40oC (32oF~104oF)
o
C~50oC (14oF~122oF)
-10 75% @ 0oC~40oC; 0% @ -10oC~50oC.
Operating: 2000m; Storage: 10000m.
1.5V (R6) x 4 Batteries or Power adaptor. Check carefully about the
working voltage of power adaptor before use. l In a radio field of 1 V/m below: Overall Accuracy = Specified Accuracy + 5% of Range l In a radio field of 1 V/m above: No assigned accuracy is specified. 200 x 100 x 48mm. Approx. 498g (including battery)
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General Specifications ( Digital Multimeter)
Range
Polarity Overloading Battery Deficiency
General Specifications (Scope)
Display Auto setting Overloading Memory USB Tilt Stand
When it is under Multimeter mode, you could select either auto or manual ranging. Auto, negative polarity displays “-“ Display OL Display
160 x 160 Monochrome Auto set the Meter according to the tested signal size Display OL 10 screens and setups Optically isolated to ensure safety Allowing viewing at a convenient position and angle.
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Feature Summary
Display Autorange
Continuity Duty Cycle Battery Access Door
Basic Specifications (Digital Multimeter)
Function
DC Voltage AC Voltage Basic Accuracy
DC Current AC Current Resistance Capacitance Frequency
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160 x 160 Monochrome When under multimeter mode, the Meter automatically selects best range Beeper sounds for resistance readings below threshold. Measure signal on or off time in %. Battery replaceable.
Ranges / Description
0 to 1000V 0 to 750V DC Voltage: 0.8% AC Voltage: 1% 0 to 10A 0 to 10A 0 to 40M 0 to 100µF 0~10MHz
Ω
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Basic Specifications (Scope)
Horizontal Vertical
Sampling rate Sampling rate / Scale Updating rate Trigger types
Timebase Range
Timebase accuracy
Detailed Accuracy Specifications
Accuracy: Operating temperature: 18oC~28oC Relative humidity: <75%RH
([% of reading] + [number of least significant digits]), guarantee for 1 year.
40M per second 20 pixels >5 Free Run / Normal / Single Shot 100ns/div~5 sec /div (1-2-5)
(0.1% + 1pix)
Bandwidth Channel Coupling Voltage resolution
Input Impedance
Accuracy Maximum input voltage Voltage Sensitivity
8MHz Single DC 8 Bits
10MΩ (excluding Multimeter part)
(5%+1pix) 1000Vp-p 20mV/div~500V/div (1-2-5)
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Page 47
A. DC Voltage
Range Resolution Accuracy Overload Protection Input Impedance
400mV 4V 40V 400V 1000V
B. AC Voltage
Range Resolution Accuracy Overload Protection Input Impedance
4V 40V 400V 750V
µV
100 1mV 10mV 100mV 1V
1mV 10mV 100mV 1V
(0.8%+8)
(0.1%+8)
(1%+15)
(1.2%+15)
1000V DC or AC
1000V DC or AC
Around 10MΩ (excluding waveform)
Around 10MΩ (excluding waveform)
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C. DC Current
Range Resolution Accuracy Overload Protection
µA
400
µA
4000 40mA 400mA 4A 10A
0.1
µA
µA
1
µA
10 100
µA
1mA 10mA
(1%+8)
(1.2%+8)
(1.5%+8)
F0.5AH/250V, ø5×20mm
F10AH/250V, ø5×20mm. (Continuous measurement and interval more than 15 minutes.)
10 seconds
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D. AC Current
Range Resolution Accuracy Overload Protection
48
µA
400
µA
4000 40mA 400mA 4A 10A
0.1
µA
µA
1 10
µA
µA
100 1mA 10mA
(1.5%+8)
(2%+8)
(2.5%+5)
F0.5AH/250V, ø5×20mm
F10AH/250V, ø5×20mm (Continuous measurement and interval more than 15 minutes.)
10 seconds
Page 50
E. Resistance
Range Resolution Accuracy Overload Protection
400Ω 4kΩ 40kΩ 400kΩ 4MΩ 40MΩ
F. Diode Test
Range Resolution Overload Protection Remarks
0.1Ω 1Ω 10Ω 100Ω 1kΩ 10kΩ
(1.2%+5)
(1%+5)
(1.2%+5) (1.5%+5)
250VDC or AC rms
250V DC or AC1mV
A good silicon junction drops between 0.5V and 0.8V.
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G. Continuity Test Test
Range Resolution Overload Protection Remarks
l The buzzer sounds when the test resistance
10Ω.
Ω
0.1
H. Frequency and Duty Cycle %
Range Resolution Accuracy Overload Protection
10Hz~10MHz
0.1%~99.9%
0.001Hz
0.1%
250V DC or AC
(0.1%+3)
Reading for reference only
is l The buzzer does not sound when the test resistance is 100Ω.
250V DC or AC rms
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I. Capacitance
Range Resolution Accuracy Overload Protection
40nF 400nF
µF
4 40
µF
µF
100
10pF 100pF 1nF 10nF 100nF
Under REL mode:
(3%+8)
(4%+8)
(3%+10)
250V DC or AC rms
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** END **
52
This operating manual is subject to change without notice.
Page 54
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