owon CMS101 Digital Oscilloscope and Multimeter Clamp Meter
Contact
For product support, visit: www.owon.com.hk/download
The illustrations, interface, icons and characters in the user manual may be slightly different from the actual product. Please refer to the actual product.
Copyright © LILLIPUT Company. All rights reserved.
The LILLIPUT’s products are under the protection of the patent rights, including ones which have already obtained the patent rights and those which are applying for. The information in this manual will replace all materials published.
The information in this manual was correct at the time of printing. However, LILLIPUT will continue to improve products and reserves the rights to change specification at any time without notice.
is the registered trademark of the LILLIPUT Company.
Fujian LILLIPUT Optoelectronics Technology Co., Ltd. No. 19, Heming Road Lantian Industrial Zone, Zhangzhou 363005 P.R. China
Tel: +86-596-2130430
Fax: +86-596-2109272
Web: www.owon.com
E-mail: info@owon.com.cn
Warranty
General Warranty
We warrant that the product will be free from defects in materials and workmanship for a period of 1 years from the date of purchase of the product by the original purchaser from our company. This warranty only applies to the original purchaser and is not transferable to a third party.
If the product proves defective during the warranty period, we will either repair the defective product without charge for parts and labour, or will provide a replacement in exchange for the defective product. Parts, modules, and replacement products used by our company for warranty work may be new or reconditioned like new. All replaced parts, modules and products become the property of our company.
In order to obtain service under this warranty, the customer must notify our company of the defect before the expiration of the warranty period. Customer shall be responsible for packaging and shipping the defective product to the designated service centre, a copy of the customers proof of purchase is also required.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care.
We shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than our company representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of not our supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.
Please contact the nearest Sales and Service Offices for services.
Excepting the after-sales services provided in this summary or the applicable warranty statements, we will not offer any guarantee for maintenance declared or hinted, including but not limited to the implied guarantee for marketability and special-purpose acceptability. We should not take any responsibilities for any indirect, special, or consequent damages.
Safety Information
1.Safety Information
(Be sure to read the safety information before using this product.)
General Safety Requirements
Before any operations, please read the following safety precautions to avoid any possible bodily injury and prevent this product or any other products connected from damage. In order to avoid any contingent danger, this product is only used within the range specified. Limit operation to the specified measurement category, voltage, or amperage ratings. Do not use the digital clamp meter if it is damaged. Before you use the digital clamp meter, inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors. Do not use the test leads provided for other products. Use only the certified test leads specified for this product. Inspect the test leads for damaged insulation or exposed metal. Before use, verify the digital clamp meter’s operation by measuring a known voltage. Only the qualified technicians can implement the maintenance. Always use the specified battery type. The power for the digital clamp meter is supplied with a battery. Observe the correct polarity markings before you insert the batteries to ensure proper insertion of the batteries in the digital clamp meter. Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and markers of this product. Refer to the user’s manual for more information about ratings before connecting to the digital clamp meter. Do not operate the digital clamp meter with the cover or portions of the cover removed or loosened. Do not operate if in any doubt. If you suspect damage occurs to the digital clamp meter, have it inspected by qualified service personnel before further operations. Do not operate this product in wet or damp conditions.
1
Safety Information
Do not operate in an explosive atmosphere. Keep product surfaces clean and dry. Do not apply more than the rated voltage (as marked on the digital clamp
meter) between terminals, or between terminal and earth ground. When measuring current, turn off the circuit power before connecting the
digital clamp meter in the circuit. Remember to place the digital clamp meter in series with the circuit. When servicing the digital clamp meter, use only the specified replacement parts. Use caution when working above 60 V DC, 30 V AC RMS, or 42.4 V peak. Such voltages pose a shock hazard. When using the test leads, keep your fingers behind the finger guards on the test leads. Remove the test leads from the digital clamp meter before you open the battery cover. To avoid false readings, which may lead to possible electric shock or personal injury, replace the battery as soon as the low battery indicator appears and flashes. Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or capacitance. Use the proper terminals, function, and range for your measurements. When the range of the value to be measured is unknown, set the rotary switch position as the highest range, or choose the auto ranging mode. To avoid damages to the digital clamp meter, do not exceed the maximum limits of the input values shown in the technical specification tables. Connect the common test lead before you connect the live test lead. When you disconnect the leads, disconnect the live test lead first. Before changing functions, disconnect the test leads from the circuit under test.
2
Safety Information
Measurement Category
The digital clamp meter has a safety rating of 1000 V,CAT III and 600V,CAT IV.
Measurement category definition
Measurement CAT I applies to measurements performed on circuits not directly connected to the AC mains. Examples are measurements on circuits not derived from the AC mains and specially protected (internal) mainsderived circuits. Measurement CAT II applies to protect against transients from energy-consuming equipment supplied from the fixed installation, such as TVs, PCs, portable tools, and other household circuits. Measurement CAT III applies to protect against transients in equipment in fixed equipment installations, such as distribution panels, feeders and short branch circuits, and lighting systems in large buildings. Measurement CAT IV applies to measurements performed at the source of the low-voltage installation. Examples are electricity meters and measurements on primary over current protection devices and ripple control units.
3
Safety Information
Safety Terms and Symbols
Safety Terms
Terms in this Manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in personal injury or death.
Caution: Caution indicates the conditions or practices that could result in damage to this product or other property.
Terms on the Product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially. Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the Product. The following symbol may appear on the product:
Direct current (DC)
Fuse
Alternating current (AC) Both direct and alternating current
Caution, risk of danger (refer to this manual for specific Warning or Caution information) Category I overvoltage protection
Ground terminal
Category II overvoltage protection
Conforms to European Union directives Equipment protected throughout by double insulation or reinforced insulation
Category III overvoltage protection Category IV overvoltage protection
4
Quick Start
General Inspection
After you get a new digital clamp meter, make a check on the instrument according to the following steps:
1. Check whether there is any damage caused by transportation. If it is found that the packaging carton or the foamed plastic protection cushion has suffered serious damage, do not throw it away first till the complete device and its accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories The supplied accessories have been already described in the Appendix A: Enclosure of this Manual. You can check whether there is any loss of accessories with reference to this description. If it is found that there is any accessory lost or damaged, please get in touch with our distributor responsible for this service or our local offices.
3. Check the Complete Instrument If it is found that there is damage to the appearance of the instrument, or the instrument can not work normally, or fails in the performance test, please get in touch with our distributor responsible for this business or our local offices. If there is damage to the instrument caused by the transportation, please keep the package. With the transportation department or our distributor responsible for this business informed about it, a repairing or replacement of the instrument will be arranged by us.
Install the Battery
The digital clamp meter is powered by a 3.7V (18650) battery.
Warning: To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the low battery indicator appears. Before replacing the battery, turn off the meter, disconnect test leads and any connectors from any circuit under test, remove test leads from the input terminals. Use only the specified
5
Quick Start
battery type.
Use the following procedure to install the battery (1) Power off, remove test leads and any connectors from the input
terminals. (2) Loosen the screws with a suitable Phillips screwdriver and remove the
battery cover. (3) Observe the battery polarity indicated inside the battery compartment,
Insert the battery. (4) Place the battery cover back in its original position and tighten the
screws.
Caution: To avoid instruments being damage from battery leakage, remove the batteries and store them separately if the digital clamp meter is not going to be used for a long period.
Power on/off
It can be turned on in the following ways:
Press the
button at the bottom left of the host;
It can be turned off in the following ways:
Manual shutdown,tap and hold
button;
Automatic shutdown, emit a short beep one minute before shutdown, emit a long beep during shutdown;
Low power automatic shutdown.
Selecting the Range
Auto ranging is set as default when the meter is powered on, Auto is displayed.
Under automatic range,press
or
to enter the manual range
mode.
Under manual range, each additional press of
sets the next higher
range; each additional press of
sets the next lower range.
Under manual range,press to enter the auto range mode.
Note:Manual range is not available when measuring capacitance,only in multimeter measurement mode.
6
Instrument Panel
Front Panel and Keys
The front panel and keys of the digital clamp meter are shown in Figure 3-1:
Figure 3- 1Front panel
Description:
Num Illustration in multimeter mode
1
NCV measurement.
Illustration in oscilloscope mode
7
Instrument Panel
2
Safety level.
3
Maximum current allowed to be measured.
4
Operation indicator light.
5
Reading hold button.
Run/Stop button.
6
Display area.
7
The F1 – F4 keys are multi-function keys. In each menu mode, press
the corresponding key to select the corresponding menu item.
8
Function of direction keys
Function of direction keys
: used for changing range.
: used for the voltage or
Function of key:Restore
current scales.
auto gear.
Function of direction keys
:
used for zooming waveforms and
the time base changing.
Function of key: Perform
automatic setup.
9
Measurement input port: the input of the measurement signal.
10 Charging port.
11 Switch key for working state of oscilloscope and multimeter. Press the
power button briefly to turn on the device. After powering on, press
briefly to switch to the oscilloscope or multimeter mode. Press and hold
to turn off the device.
12 Tab function switch button.
13 Clamp head trigger: Press the trigger to open the clamp heads; release
the trigger, and the clamp heads will automatically close.
14 Clamp head: The current measurement sensor converts alternating or
direct current into voltage.
8
How to Use the Multimeter
About This Chapter
This chapter introduces the multimeter function and provides some basic examples of basic operations and how to use the menu.
Instrument Interface
The digital clamp meter uses four 2 safety banana plug input ends:COM and .
Multimeter interface:
Description:
Figure 4- 1:Multimeter interface
1. Measurement type indication:
Measurement type Description
A,DC
DC current measurement
A,AC
AC current measurement
V,DCmV,DC
DC voltage measurement
V,ACmV,AC
AC voltage measurement
9
How to Use the Multimeter
Res
Resistance measurement
Cont
On/Off measurement
Diode
Diode measurement
Cap
Capacitance measurement
Freq
Frequency measurement
NCV
Non-contact AC voltage sensing
2. Range indication: Manu means manual range; Auto means automatic range.
3. Current measurement range.
4. Automatic shutdown sign: Display the flag when enabled. Closing will hide the identity.
5. Bluetooth sign: Display the flag when enabled. Closing will hide the identity.
6. Battery power and external power supply indication. 7. Inrush mode (Only in ACA mode). 8. Reading hold mode. 9. Current measurement menu. 10. Current measurement unit 11. DC/AC/On-Off/Diode/Capacitance mode. 12. Range simulation strip. 13. Operation menu.
Measurement units
Sign M k m n
Description
Mega 1E+06 (1000000)
kilo
1E+03 (1000)
milli
1E03 (0.001)
micro 1E06 (0.000001)
nano
1E09 (0.000000001)
Sign Description Measurement type
V
Voltage
Voltage
10
A
Ampere
Ohm
Hz Hertz
%
Percent
F
Farad
How to Use the Multimeter
Current Resistance Frequency Duty cycle Capacitance
Input terminals
The terminal connections for the different measurement functions of the digital clamp meter are described in the table below.
Warning: Before starting any measurement, observe the rotary switch position of the digital clamp meter, and then connect the test leads to the correct terminals.
Caution: To avoid damaging the digital clamp meter, do not exceed the rated input limit.
Measurement function
Input terminals Overload protection 1000 VAC/1000 VDC
250 VAC/300 VDC
Making Measurements
Measuring DC or AC Current
Warning: Do not attempt to measure current if the open-circuit voltage between the live and ground exceeds 250V, as this may damage the digital clamp meter and pose a risk of electric shock or personal injury.
Caution: To avoid damaging the digital clamp meter or the measured device, check the digital clamp meter before measuring current.
How to Use the Multimeter
correct input terminals, function settings, and range are used for the measurement. The current measurement function must be operated between 0°C and 40°C. Avoid suddenly releasing the trigger; the Hall effect sensor is sensitive not only to magnetic fields but also to heat and mechanical stress. Impact can temporarily alter readings. For accurate measurement, ensure the conductor is positioned at the center of the clamp heads. Positioning outside the center can introduce an additional error of ±1.0% of the reading.
1. Press to switch DC Current measurement mode, A, will be displayed in the upper left corner.Then press to switch into AC Current measurement mode, A, will be displayed in the upper left corner.
2. Hold the trigger to open the clamp heads. Place the conductor to be measured in the clamp and then slowly release the trigger until the clamp heads are fully closed. Ensure the conductor is centered in the clamp as shown in the diagram. If not centered, additional errors may occur. The clamp meter can measure only one current conductor at a time; measuring two or more conductors simultaneously will result in incorrect readings.
3. Read the display. Press or to enable and cycle through the manual ranges. If “OL” is displayed, it indicates the input exceeds.
12
How to Use the Multimeter
4. In AC current mode, press the
key to switch to the second page of
the menu, then press the
key to enable the surge current
measurement mode. At this point, start the electrical device to measure its
inrush current. Press the
key again to exit this mode.
5. In AC current mode, press the
key to switch to the second page of
the menu. Press the
key again to enable the AC current frequency
measurement mode. You can then directly read the frequency of the AC
current from the display. Press the
key once more to exit this mode.
Note:
After testing DC current, especially with large currents, the open-circuit
baseline might be high. Perform an AC current test to eliminate residual
magnetic signals from the clamp heads.
If there is residual magnetism, press the
key to select “Zero.” This
will temporarily subtract the current residual magnetism from the readings. Note that the residual magnetism value will return after restarting the instrument.
Measuring AC or DC Voltage
Warning: Do not measure any voltage of over 1000 Vdc or 1000 Vac rms to avoid instrument damage or electric shock. Do not apply more than 1000 Vdc or 1000 Vac rms between the common terminal and the earth ground to avoid instrument damage or electric shock.
This digital clamp meter displays DC voltage values as well as their polarity. Negative DC voltages will display a negative sign on the left of the screen.
1. Press
to switch DC voltage measurement mode, *, will be
displayed in the upper left corner (* denotes mV or V). Then press to switch into AC Voltage measurement mode, *, will be displayed in
the upper left corner (* denotes mV or V). And then press
to switch
into mVV measurement function, press
or
to up and down
13
How to Use the Multimeter
measurement scales. 2. Connect the black test lead to the
terminal and the red test lead to
the
terminal.
3. Probe the test points and read the display,this is shown in the figure below.
Press
or
to enable and cycle through the manual ranges.
4. In AC voltage mode, press the
key to switch to the second page of
the menu. Press the
key again to enable the AC voltage frequency
measurement mode. You can then directly read the frequency of the AC
voltage from the display. Press the
key once more to exit this mode.
Note: When the measured voltage exceeds 42V DC, the instrument’s LCD will
display a high voltage warning symbol ” ” and the screen will show a red alert as shown in the image.
14
How to Use the Multimeter
Measuring Resistance
Caution: To avoid possible damage to your digital clamp meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before measuring resistance.
1. Press
to enter resistance testing mode, Res will be displayed in
the upper left corner.
2. Connect the black test lead to the
terminal and the red test lead to
the
terminal.
3. Probe the test points to measure the resistance in the circuit, as shown in
the image.
15
How to Use the Multimeter
Measuring Continuity
Caution: To avoid possible damage to your digital clamp meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before testing for continuity.
1. Press
to enter continuity testing mode, Cont will be displayed in
the upper left corner.
2. Connect the black test lead to the
terminal and the red test lead to
the
terminal.
3. Probe the test points to measure the resistance in the circuit, as shown in
the image. If the reading is below 50 , the digital clamp meter will beep
continuously.
16
How to Use the Multimeter
Measuring Diodes
Caution: To avoid possible damage to your digital clamp meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before testing diodes.
1. Press to enter diode testing mode, Diode will be displayed in the upper left corner.
2. Connect the black test lead to the
terminal and the red test lead to the terminal.
3. Connect the red test lead to the positive terminal of the diode and the black test lead to the negative terminal, as shown in the image.
17
How to Use the Multimeter
4. Read the diode forward bias. If the test lead connection is reversed, the digital clamp meter will display “OL”.
Measuring Capacitance
Caution: To avoid possible damage to the digital clamp meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the DC voltage function to confirm that the capacitor is fully discharged.
1. Press to enter capacitance testing mode, Cap will be displayed in the upper left corner.
2. Connect the black test lead to the terminal and the red test lead to the terminal.
3. Probe the test points to measure the capacitance in the circuit, as shown in the image.
18
How to Use the Multimeter
Measuring Frequency
1. Press to enter frequency measurement mode, Freq will be displayed in the upper left corner.
2. Connect the black test lead to the terminal and the red test lead to the terminal.
3. Probe the test points to measure the frequency in the circuit, as shown in the image.
19
How to Use the Multimeter
4. Press to the second page menu and press the frequency and duty cycle measurements. Measuring NCV to switch between
1. Press to enter capacitance testing mode, NCV will be displayed in the upper left corner. Bring the front end of the clamp head close to the measured conductor for AC voltage detection.
2. To detect whether there is AC voltage or an electromagnetic field in the
area, the LCD will display a dash (“-“). The display will indicate four levels
based on the voltage detected: “-“, “- -“, “- – -“, and “- – – -“. Additionally, the
buzzer will emit a continuous intermittent sound, and the NCV LED will
light up. If no voltage is detected, the LCD will display “EF”.
20
How to Use the Multimeter
Multimeter Features
Setting Scale
1. Press to enter automatic gear mode.
2. In the automatic gear mode, press
or
gear mode.
Setting Range
to enter manual
1. Press
to switch into DC current measurement and press
or
to up and down measurement scales.
2. Press
to switch into AC current measurement, press
to
the second page menu, press
or
to select Inrush Hz/A
function, and then press
or
to up and down measurement
scales.
21
How to Use the Multimeter
3. Press
to switch into DC voltage measurement, press
to
switch into mV V, and then press
or
to up and down
measurement scales.
4. Press
to switch into AC voltage measurement, press
to
switch into mV V, and press
to the second page menu, then
press
to select Hz/V function, and then press
or
to
up and down measurement scales.
Making Max/Min Measurements
Press
switch into the second page menu and press
to enter
Max/Min measurement.When the button is pressed, it will automatically enter the manual gear mode. Press the button again to exit the Maxmin mode and resume the automatic gear mode.
Making Relative Measurements
When making relative measurements, reading is the difference between a stored reference value and the input signal.
1. Press
switch into the second page menu and press
to
22
How to Use the Multimeter
enter the relative mode, will be shown on the display. The
measurement value when pressing
is stored as the reference
value.In this mode,(current reading) = input value – reference value. 2. Press it again to exit the mode.
In relative measurement, the manual range mode will be activated automatically (The relative measurement should be carried out under a certain range, that is, this function is only available under the manual range mode.).
Value Hole Mode
The value hold mode keeps the current reading on the display. 1. Press HOLD on the right , the current reading will be maintained, HOLD
will be displayed. 2. Press it again to exit the mode.
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How to Use the Multimeter 24
How to Use the Oscilloscope
Introduction to the User Interface of the Oscilloscope Figure 5- 1Oscilloscope Interface Description: 1. Time base display (In the horizontal direction, each grid represents a specific time interval.). 2. Scale (In the vertical direction, each grid represents a specific voltage or current value.) 3. The trigger status indicates the following information: TrigA trigger has been detected and post trigger information is being collected. Ready:All pre trigger data have been obtained and the oscilloscope is ready. Scan:Continuously collect and display waveform data. Stop:Stop collecting waveform data. 4. Automatic shutdown sign: Displays the flag when enabled. Closing will hide the identity.
25
How to Use the Oscilloscope
5. Bluetooth sign: Displays the flag when enabled. Closing will hide the identity.
6. Battery power and external power supply indication. 7. Rms value. 8. Trigger horizontal displacement. 9. Trigger level position. 10. Measurement value. 11. Operation menu. 12. Waveform display area. 13. Channel waveforms. 14. Frequency value.
Measuring System
Automatic Measurement
In oscilloscope mode,it will display automatic measurement value,the screen displays six measurement types in the bottom:FreqRmsMaxMin Vpp and Avg.
The automatic measurement of voltage parameters
The oscilloscopes provide automatic voltage measurements including Avg, Vpp, Rms, Max, Min and Vamp. Figure 5-2 below shows a pulse with some of the voltage measurement points.
Figure 5- 2 AvgThe arithmetic mean over the entire waveform. VppPeak-to-Peak Voltage.
26
How to Use the Oscilloscope
RmsThe true Root Mean Square voltage over the entire waveform. Max:The most positive peak voltage measured over the entire waveform. Min:The most negative peak voltage measured over the entire waveform. Measurement
1. Press
to switch into oscilloscope mode.
2. Press
switch into voltage measurement and then press
or
to up and down measurement gear, press or can adjust time base gear.
3. Press
switch into current measurement and then press
or
to up and down measurement gear, press or can adjust time base gear.
4. Press
or HOLD in the right. While in pause mode, press
or
can zoom in or out the waveform.
5. Press
to enter the second page menu, press
to set the
trigger is rise or fall and press
or
level position.
to up and down the trigger
System Settings
Press
to enter the third page menu. Press
the desired function menu.
~
can select
1. Brightness setting: Press Mid, and High.
the brightness varies between Low,
2. Automatic shutdown setting: Press
to open or close the function.
When the function is turned on, it will automatically shut down after a specified period of time. However, When the function is turned off, manual shutdown is required.
3. Theme setting: Press
to change the display theme.
27
How to Use the Oscilloscope
How to use Bluetooth
(1) On the mobile device, scan the QR code below and follow the instructions to install the free multimeter app.
(2) Open the installed application on your mobile device.
(3) Turn on the multimeter, press and hold
until
display. (4) Click on “Device List” in the bottom navigation bar.
appear on the
(5) Click the “+” icon in the upper left corner to begin searching for devices 28
How to Use the Oscilloscope and list out the multimeters found.
(6) If the Bluetooth of the mobile device is not enabled, a prompt box will pop up at the bottom, indicating “Bluetooth is not turned on”. You need to manually open the Bluetooth of the mobile device before connection can be made.
(7) Active “Filter device” to hide incompatible multimeters.
(8) After “BDM” appears in the list of available devices, click and select to connect it to the mobile device.
Note: When Bluetooth is enabled, the auto power-off function is disabled. After Bluetooth is turned off, the auto power-off function will be restored.
29
Technical Specifications
6Technical Specifications
Standard conditions: The environment temperature is 18 to 28,the relative humidity is less than 80%. Note: When measuring AC voltage, AC current, accuracy guarantee range is
10% to 100% of the range. When measuring DC voltage, DC current or capacitance, accuracy
guarantee range is 5% to 100% of the range.
Multimeter Specification
Function
mV
DC Voltage
(V)
V
mV
AC Voltage
(V)
V
DC Current (A)
A
AC Current (A)
A
Inrush Current(A)
A
NCV
Resistance()
Measurement Range 20.000mV 200.00mV 2.0000V 20.000V 200.00V 1000.0V 200.00mV
2.0000V
20.000V 200.00V 1000.0V 20.00A 200.0A 1000A 20.00A 200.0A 1000A 20.00A 200.0A 1000A Support 200.00 2.0000k 20.000k 200.00k
Resolution
0.001mV 0.01mV 0.0001V 0.001V 0.01V 0.1V 0.01 mV 0.0001V 0.001V 0.01mV 0.1V 0.01A 0.1A 1A 0.01A 0.1A 1A 0.01A 0.1A 1A
0.01 0.0001k 0.001k 0.01k
Function ±0.1%+20dig ±0.1%+6dig
±0.1%+5dig
±0.15%+5dig
VRMS Freq range: 40Hz-1000Hz
±0.6%+10dig
±0.8%+10dig ±2.0%+10dig
±2.0%+5dig
VRMS Freq range: 40Hz-1000Hz
VRMS Freq range: 40Hz-1000Hz
±3.0%+10dig
±2.5%+5dig
± 10.0%+10dig
±0.8%+10dig
±0.3%+10dig
30
Technical Specifications
2.0000M 0.0001M
20.000M 0.001M ±0.5%+5dig
100.00M 0.01M
±5.0%+10dig
2.000nF
0.001nF ±5.0%+10dig
20.00nF
0.01nF
200.0nF
0.1nF
Capacitance(F)
2.000F 20.00F
0.001F 0.01F
±3.0%+10dig
200.0F
0.1F
2.000mF
0.001mF
20.00mF[1] 0.01mF
200.00Hz
0.01Hz
2.0000kHz 0.0001kHz
Frequency [2](Hz)
20.000kHz 200.00kHz
0.001kHz 0.01kHz
±0.1%+5dig
2.0000MHz 0.0001MHz
20.000MHz 0.001MHz
Duty Cycle [3](%)
0.1%-99.9% Typical:
Vrms=1 V, f=100Hz
0.10%
±1.2%+3dig
0.1%-99.9% 1 kHz
±2.5%+10dig
Diode
3.0000V
0.0001V Open circuit voltage 3.2V
Buzzer limit 50; The
On-Off
0200.0 0.1
measurement value is displayed from 00 to 200.0, and “OL” is displayed if the
value exceeds.
[1] When measuring capacitance, for the 20.00mF range, the measuring duration should be over 30 seconds.
[2] When measuring frequency, the typical waveform is Square or Sine. The signal meets the following conditions:
Frequency
Amplitude (rms)
1 Hz 20 MHz
1V
[3] When measuring duty cycle, the typical waveform is Square. Note: when measuring resistance and capacitance, the influence of theresistance reactance of the pen itself on the measured value should be considered.
31
Technical Specifications
Oscilloscope Specification
Characteristics
Instruction
Analog bandwidth
Voltage: 1MHz Current: 1KHz
Sample mode
Real-time sample
Real-time sampling rate
5.0 MSa/s
Channel
1
Input impedance 10 M
Maximum input voltage
Maximum peak voltage 1000V
Maximum sample Maximum peak current 1000A current
Scan speed
2.5 us/div – 10 s/div
Time base accuracy
±(0.01 % + 0.1 div)
Sensitivity
30 mV/div – 500 V/div
Displacement range
±3 grid
Sensitivity accuracy
±(5%+0.2div)
Measurement value
RmsFreqMaxMinPK-PKAvg
Trigger mode
Auto
Trigger type
RiseFall
Bluetooth communication
A smart phone can be used to view the measurement data of the multimeter on the mobile phone side, perform remote control, display data charts, and store the measurement data in CSV format.
Automatic shutdown
When all functions are not used, the meter will automatically shut down in about 10 minutes.(the default is 10 minutes of automatic shutdown when starting, which can be canceled)
True effective
value
Display mode
DMM or OSC
Return zero
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Technical Specifications
measurement Input protection Digital hold Power
Low battery display
Backlight function LCD Size Weight Dimension
Single section 18650 3.7V When the power is low, there will be a low power window, and wait for a period of time to shut down automatically. 2.8 inch Approx. 0.35kg 248mmL x 94.5mmW x 37.8mmD
Interval Period of Adjustment: One year is recommended for the calibration interval period.
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Appendix
Appendix
Appendix A: List of Accessories
1 set of probes 1 quick guide 1 USB-TYPE C line
Appendix B: Maintenance and Cleaning
General maintenance
Do not store or place the instrument in a place where the LCD screen will be exposed to direct sunlight for a long time. Caution: Do not let spray, liquid or solvent touch the instrument or probe to prevent damage to the instrument or probe. Cleaning: Check the instrument and probe frequently according to the operation. Clean the external surface of the instrument as follows: 1. Please wipe the floating dust outside the instrument and probe with a soft cloth. When cleaning the LCD, be careful not to scratch the transparent LCD protection screen. 2. Wipe the instrument with a damp but non dripping soft cloth. Please disconnect the power supply. It can be scrubbed with soft detergent or water. Do not use any abrasive chemical cleaning agent to avoid damaging the instrument or probe.
Warning: Please make sure the instrument is dry before re-energizing to avoid electrical short circuit or personal injury caused by moisture.
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Appendix
Charging and Replacement of Battery
During the long-term storage of the device, the battery may be too low due to the self-discharge of the lithium battery and the device cannot be turned on. T his is a normal phenomenon. Please use the attached adapter to pre-charge the device for 0.5 to 1 hour ( depending on the storage time) before turning it on. In addition, if the device is not used for a long time, it is recommended to charge it at regular intervals to avoid over-discharge of the lithium battery.
Battery Charging The lithium battery may not be fully charged when delivered. To make the battery be charged,this device has an approximate charging time of 8 hours and a peak discharge battery life of about 18.5 hours.The power supply and battery indicator symbols in the upper right corner of the screen are explained as follows: symbol indicates the power-on charging status; symbol indicates battery power supply; symbol indicates that there is only about five minutes of use time left.
Please charge as soon as possible according to the relevant tips to avoid damage to the battery.
Charging Method
Connect the digital clamp meter to a computer or other equipment through a USB data cable for charging (pay attention to the load capacity of the power supply equipment to avoid abnormal operation of the equipment). Note
To avoid overheating of the battery during charging, the ambient temperature must not exceed the allowable value given in the technical specifications.
Replacement of Lithium Battery
Generally, the battery does not need to be replaced. However, when necessary, it can only be replaced by qualified personnel, and only lithium batteries of the same specification can be used.
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FCC STATEMENT
RF exposure statement
This equipment complies with the FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
FCC Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: –Reorient or relocate the receiving antenna. –Increase the separation between the equipment and receiver. –Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. –Consult the dealer or an experienced radio/TV technician for help.
NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Documents / Resources
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owon CMS101 Digital Oscilloscope and Multimeter Clamp Meter [pdf] User Manual 2BL44-CMS101, 2BL44CMS101, CMS101 Digital Oscilloscope and Multimeter Clamp Meter, CMS101, Digital Oscilloscope and Multimeter Clamp Meter, Oscilloscope and Multimeter Clamp Meter, Multimeter Clamp Meter, Clamp Meter, Meter |