Uni-Trend UT207 multimeter
Contents
1. Rotary Switch Functional Buttons Positions SELECT MAX MIN 2 HOLD 8Hz ZERO Vw ei HO YoHz N A e e e 66 N A e 1000 N A e e e N A e 66 e 1000A e OF e e e N A N A 14 Model UT207 208 OPERATING MANUAL Display Symbols see figure 2 90000 den ED an mn BBBB LA an 2 BU dd bnn ga DL Figure 2 15 Model UT207 208 OPERATING MANUAL Number Symbol Meaning 1 INRUSH Indicator for Surge current 2 MIN Minimum reading displayed 3 MAX Maximum reading displayed 4 ZERO Indicator for zeroing 5 Data hold is active 6 The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution 7 RMS True RMS indicator 8 AC Indicator for AC voltage or current 9 Indicates negative reading 10 DC Indicator for DC voltage 11 The battery is low A 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 16 Model UT207 208 OPERATING MANUAL Number Symbol Meaning 12 Sleep mode is on 13 It Test of diode 14 ej The continuity buz2. Model UT207 208 OPERATING MANUAL Functional Buttons Below table indicated for information about the functional button operations Button Operation Performed SELECT Press SELECT button to select the alternate functions including 4 EQ Hz AW and CF UT208 only MAX MIN Starts recording of maximum and minimum values Press to step the display through high MAX and low MIN readings at any mode Press and hold for one second to exit MAX MIN mode 26 9 Press again to turn the display backlight off otherwise it will os automatically off after 1 minute HOLD e Press HOLD to enter the Hold mode in any mode the Meter beeps 9 Press HOLD again to exit the Hold mode to return to measurement mode the Meter beeps 9 Turn the rotary switch or press SELECT button can also exit Hold mode 12 Model UT207 208 OPERATING MANUAL Button Operation Performed HOLD Press HOLD button for 2 seconds when turning on the Meter to display full icon 8 Hz When the Meter is at Hz V and A ev press Hz to measure frequency and duty cycle ZERO Press ZERO to zeroing the display before measuring DC current 13 Model UT207 208 OPERATING MANUAL The Effectiveness of Functional Buttons Not every functional buttons can be used on every rotary switch positions Below table describe which functional buttons can be used on which rotary switch positions
3. 00A and 1000A To measure AC current do the following 1 Set the rotary switch to 66A or 1000A 2 Hold the Meter tight don t release The Hall components are very senstive not only to the magnet but also to heat and machines reaction force Any shock will cause the changing in reading in the short time Press the lever to open the transformer jaw Center the conductor within the transformer jaw then release the Meter slowly until the trasnformer jaw is completely closed Make sure the conductor to be tested is placed at the center of the 32 Figure 10 Model UT207 208 OPERATING MANUAL 6 transformer jaw otherwise it will casue deviation The Meter can only measure one conductor at a time to meausre more than one condutor at a time will cause deviation When the measuring current gt 1A press Hz button to step through AC current frequency and duty cycle measurement mode But the frequency or duty cycle readings obtained from this range is only for reference Press SELECT to carry out surge current measurement To measure surge current Measurement do the following 1 Set the rotary switch to 1000A v 2 Press SELECT when the Meter displays the minimum readings The Meter then displays means it is ready to carry out surge current measurement Turn on the electrical equipments at that time to measure the moment start up current Press a
4. Sensitivity a as follows When a S10Hz the Meter does not response When 10Hz lt a S100kHz 2300mV rms When a 100kHz 2600mV rms 44 Model UT207 208 OPERATING MANUAL G Duty Cycle Range Resolution Accuracy Overload protection 0 1 99 9 0 1 For reference only 250VAC H DC Current Range Resolution Accuracy Overload protection 66 00A 0 01A 2 40 250VAC 1000A 1A 2 8 A Warning The operating temperature must be 0 40 C when measuring current 45 Model UT207 208 OPERATING MANUAL Remarks If the reading is positive the current direction is from bottom to up See figure 10 the front case face up while the bottom case face down Hold the Meter tight do not release The Hall components are very sensitive not only to the magnet but also to heat and machines reaction force Any shock will cause the changing in reading in the short time Follow the below procedure to measure current will be more precise 1 Turn off the current of tested conductor 2 Hold the Meter tight and press the lever to open the transformer jaw Center the conductor within the transformer jaws then release the Meter slowly until the transformer jaw is completely closed Make sure the conductor to be tested is placed at the center of the transformer jaw otherwise it will cause 1 0 deviation based on the stated accuracy 3 Press ZERO button to display zero 4 Turn on the cur
5. LINI T Model UT207 208 OPERATING MANUAL Model UT207 208 OPERATING MANUAL Table of Contents Title Page OVW 4 Unpacking Inspection 5 Safety Information 6 Rules For Safe Operation P International Electrical Symbols ia ee The Meter Structure ee A Functional Buttons foe SS Se ID The Effectiveness of Functional Buttons 14 Display Symbols 15 Measurement Operation 18 A DC AC Voltage Measurement 18 B Measuring Resistance 20 C Testing Diodes 22 D Testing for Continuity 24 E Frequency Measurement 26 Duty Cycle Measurement 28 Title G DC Current Measurement H AC Current Measurement UT208 only Temperature Measurement gt Model UT207 208 OPERATING MANUAL Sleep Mode pns Specifica
6. MQ Frequency Response 40Hz 400Hz Change to AC Combine AC and True RMS response method Input sine wave to adjust Non sine wave must follow the below data to adjust Peak factor 1 4 2 0 add 1 0 on the stated accuracy Peak factor 2 0 2 5 add 2 5 on the stated accuracy Peak factor 2 5 3 0 add 4 0 on the stated accuracy 41 Model UT207 208 OPERATING MANUAL C Resistance Range Resolution Accuracy Overload protection 660 00 0 10 t 1 29642 6 600kQ 19 66 00kQ 100 t 1 2 250VAC 660 0kQ 1000 6 600MQ 1kQ t 1 2 2 66 00MQ 10kQ 1 5 2 D Diode Test Range Resolution Accuracy Overload protection 0 5V 0 8V Open 1mV circuit voltage 250VAC approx 3 0V 42 Model UT207 208 OPERATING MANUAL E Continuity Test Range Resolution Accuracy Overload protection Around 30Q the 1 0 10 buzzer beeps 250VAC Open circuit voltage approx 1 2V Remark The buzzer may or may not beeps when the resistance of a circuit under test is between 300 1000 The buzzer does not beep when the resistance of a circuit under test is gt 1000 43 Model UT207 208 OPERATING MANUAL F Frequency Range Resolution Accuracy Overload protection 660 0Hz 0 1Hz 6 600kHz 0 001kHz 66 00kHz 0 01kHz t 0 1963 250VAC 660 0kHz 0 1kHz 6 600MHz 0 001MHz 66 00MHz 0 01MHz Remarks Input
7. RATING MANUAL Unpacking Inspection Open the package case and take out the Meter Check the following items carefully to see any missing or damaged part Item Description Qty 1 English Operating Manual 1 piece 2 Test Lead 1 pair 3 Point Contact Temperature Probe Only UT208 This 1 pair included point contact temperature probe can only be used up to 230 C For any measurement is higher than that the rod type temperature probe must be used 4 Tool box 1 piece 5 9V Battery NEDA1604A or 6LF22 1 piece In the event you find any missing or damage please contact your dealer immediately Model UT207 208 OPERATING MANUAL Safety Information This Meter complies with the standards IEC61010 1 IEC61010 2 032 in pollution degree 2 overvoltage category CAT Il 600V CAT III 300V and double insulation CAT Il Local level appliance PORTABLE EQUIPMENT etc with smaller transient overvoltages than CAT Ill CAT III Distribution level fixed installation with smaller transient overvoltages 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 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 International electrical symbols used on the Meter and i
8. a default or press SELECT to switch to Hz measurement mode 3 Connect the test leads across with the object Figure 7 26 Model UT207 208 OPERATING MANUAL being measured The measured value shows on the display Note When frequency measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter 27 Model UT207 208 OPERATING MANUAL F Duty Cycle Measurement see figure 8 AN Warning To avoid harms to you or damages to the Meter from eletric shock do not attempt to measure voltages higher than 600V AC DC although readings may be obtained The duty cycle range is 0 1 99 9 To measure duty cycle connect the Meter as follows 1 Insert the red test lead into the VOHz terminal and the black test lead into the COM terminal 2 Setthe rotary switch to Hz Press SELECT to switch to measurement mode 3 Connect the test leads across with the object being measured The measured value shows on the display 28 2 a Figure 8 Model UT207 208 OPERATING MANUAL Note When duty cycle measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter 29 Model UT207 208 OPERATING MANUAL G DC Current Mea
9. ameter Projected Max Current conductor size 45mm diameter Electro Magnetic When carrying out measurement near the electro magnetic it may cause unstable or wrong reading Power 1 x 9V battery 6LF22 1604A 38 Model UT207 208 OPERATING MANUAL Battery Life typically 150 hours alkaline battery Dimensions 285 3mm x 105mm x 44 5mm Weight Approximate 533g battery included Environmental Requirements The Meter is suitable for indoor use Altitude Operating 2000m Storage 10000m Safety Compliances IEC61010 1 IEC61010 2 032 CAT II 600V CAT III 300V over voltage and double insulation standard pollution degree 2 Temperature and humidity Operating 0 C 30 C 80 R H 30 C 40 C 75Y6R H 40 C 50 C S45 R H gt Storage 20C 460 C lt 80 39 Model UT207 208 OPERATING MANUAL Accurate Specifications Accuracy a reading b digits guarantee for 1 year Operating temperature 23 C 5 C Relative humidity 80 R H Temperature coefficient 0 1x specified accuracy 1 C A DC Voltage Range Resolution Accuracy Overload protection 6 600V 1mV 66 00V 10mV 0 8 1 600V DC AC 600 0V 100mV Remark Input Impedance 10MQ 40 Model UT207 208 OPERATING MANUAL B AC Voltage Range Resolution Accuracy Overload protection 6 600V 1mV 66 00V 10mV 1 27645 600V DC AC 600 0V 100mV Remarks Input Impedance 10
10. c maintenance information including battery replacement instruction A 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 To avoid electrical shock or damage to the Meter do not get water inside the case A General Service Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings Turn the Meter power off when it is not in use Take out the battery when it is not using for a long time Do not use or store the Meter in a place of humidity high temperature explosive inflammable and strong magnetic field 49 B Replacing the Battery see figure 12 AN Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator E3 appears Make sure the transformer jaw and the tets leads are disconected from the circuit being tested before opening the case bottom 50 Model UT207 208 OPERATING MANUAL Figure 12 Model UT207 208 OPERATING MANUAL To replace the battery 1 Turn the Meter off and remove all the connections from the input terminals 2 Turn the Meter s front case down 3 Remove the screw from the battery compartment and separat
11. cing 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 Turn the Meter off when it is not in use and take out the battery when not using for a long time Constantly check the battery as it may leak when it has been using for some time replace the battery as soon as leaking appears A leaking battery will damage the Meter Model UT207 208 OPERATING MANUAL International Electrical Symbols 4 AC Alternating Current ses DC Direct Current ACorDC dE Grounding 5 Double Insulated AN Warning Refer to the Operating Manual Ea Deficiency of Built In Battery en Continuity Test Diode 7 Danger of High Voltage Conforms to Standards of European Union 10 Model UT207 208 OPERATING MANUAL The Meter Structure see figure 1 1 2 ND Hand Guards to protect user s hand from touching the dangerous area Trigger press the lever to open the transformer jaws When the pressure on the lever is released the jaws will close Functional Buttons Input Terminals LCD Display Rotary Switch Transformer Jaw designed to pick up the AC and DC current flowing through the conductor It could transfer current to voltage The tested conductor must vertically go through the Jaw center 11 Figure 1
12. e the battery compartment from the case bottom 4 Take out the old battery and replace with a new 9V battery 6LF22 1604A 5 Rejoin the case bottom and the battery compartment and reinstall the screw 51 Model UT207 208 OPERATING MANUAL END This operating manual is subject to change without notice 52 Model UT207 208 OPERATING MANUAL GCopyright 2007 Uni Trend Group Limited All rights reserved Manufacturer Uni Trend Technology Dongguan Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town Dongguan City Guang Dong Province China Postal Code 523 925 Headquarters Uni Trend Group Limited Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com 53
13. een completed disconnect the connection between the temperature probe and the object under test and remove the temperature probe away from the input terminals of the Meter 36 Model UT207 208 OPERATING MANUAL Sleep Mode To preserve battery life the Meter automatically turns off if you do not turn the rotary switch or press any button for around 15 minutes The Meter beeps 3 times in one minute before entering Sleep Mode and long beep one time just before entering Sleep Mode The Meter can be activated by turning the rotary switch or pressing the button based on The Effectiveness of Functional Buttons on page 14 If the Meter is activated by pressing button the Meter will keep the measurement value before entering Sleep Mode Press MAX MIN LIGHT or Hz to turn on the Meter can disable the Sleep Mode feature 37 Model UT207 208 OPERATING MANUAL Specifications A General Specifications Maximum Voltage between any Terminals and grounding Refer to different range input protection voltage Display 3 5 6 digits LCD display Maximum display 6666 Polarity Auto Overloading Display OL or OL Battery Deficiency Display Sampling 3 times per second Measurement Deviation The conductor being meaured is not placed in the center of the jaw during AC DC current measurement it will cause extra 1 deviation based on the stated accuracy Drop Test 1 meter drop test passed Max Jaw Size 55mm di
14. n this Operating Manual are explained on page 10 6 Model UT207 208 OPERATING MANUAL 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 that the rated voltage as marked on the Meter between the terminals or between any terminal and grounding 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 measurement has been completed disconnect the connection between the test leads and the circuit under test remove the testing leads awayl 7 Model UT207 208 OPERATING MANUAL from the input terminals of the Meter and turn the Meter power off The rotary switch should be placed in the right position and no any changeover of range shall be made during measurement is conducted to prevent damage of the Meter Do not carry out the measurement when the Me
15. nd hold SELECT for one second to exit surge current measurement mode When the Meter is at surge current measurement it is locked to the highest measurement range 33 Model UT207 208 OPERATING MANUAL Note When current measurement has been completed disconnect the connection between the conductor under test and the jaw and remove the conductor away from the transformer jaw of the Meter 34 Model UT207 208 OPERATING MANUAL I UT208 only Temperature Measurement see figure 11 The temperature measurement range 40 C 1000 C and 40 F 1832 F To measure temperature measurement connect the Meter as follows 1 Insert the red temperature probe into the VOHz terminal and the black temperature probe into the COM terminal 2 Set the rotary switch to C F Press SELECT to switch between C and F measurement mode 3 Place the temperature probe to the object being measured The measured value shows on the display 35 Figure 11 Model UT207 208 OPERATING MANUAL Note When the Meter is at C F range it beeps to remind user to insert temperature probe The Meter automatically displays the room temperature when the temperature probe is inserted but without any input The included point contact temperature probe can only be used up to 230 C For any measurement is higher than that the rod type temperature probe must be used When the temperature measurement has b
16. r 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 connect the Meter as follows 22 Figure 5 Model UT207 208 OPERATING MANUAL 1 Insert the red test lead into the VOHz terminal and black test lead into the COM terminal 2 Set the rotary switch to MO Press SELECT to switch to measurement mode 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 Note To obtain a more precise reading you could remove the objects being tested from the circuit when measuring When diode testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals 23 Model UT207 208 OPERATING MANUAL D Testing for Continuity see figure 6 AN Warning To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capaci
17. rent of tested conductor reading the stable value of clamp meter 5 The obtained reading will be more precise 46 Model UT207 208 OPERATING MANUAL I AC Current Range Resolution Accuracy Frequency Overload protection Response 66 00A 0 01A 2 40 50Hz 60Hz 250VAC 1000A 1A 2 8 A Warning The operating temperature must be 0 C 40 C when measuring current Remarks It may have unstable or wrong sensed readings it will not affect measurement result Hold the Meter tight do now release The Hall components are very sensitive not only to the magnet but also to heat and machines reaction force Any shock will cause the changing in reading in the short time Change to AC Combine AC and True RMS response method Input sine wave to adjust 47 Model UT207 208 OPERATING MANUAL Non sine wave must follow the below data to adjust Peak factor 1 4 2 0 add 1 0 on the stated accuracy Peak factor 2 0 2 5 add 2 5 on the stated accuracy Peak factor 2 5 3 0 add 4 0 on the stated accuracy J Temperature UT208 only 32 F 752 F 1 6 752 F 1832 F 2 18 Range Resolution Accuracy Overload protection 40 C 1000 C 1 C 40 C 0 C 3 4 0 C 400 C 1 3 400 C 1000 C 2 10 40 F 1832 F 40 F 32 F 3 8 250VAC 48 Model UT207 208 OPERATING MANUAL MAINTENANCE This section provides basi
18. surement see figure 9 The measurement ranges of current are 66A 5 and 1000A To measure current do the following 1 2 Set the rotary switch to 66 ss or 1000A ses Hold the Meter tight don t release The Hall components are very senstive not only to the magnet but also to heat and machines reaction force Any shock will cause the changing in reading in the short time Press the lever to open the transformer jaw Center the conductor within the transformer jaw then release the Meter slowly until the trasnformer jaw is completely closed Make sure the conductor to be tested is placed at the center of the transformer jaw otherwise it will casue deviation The Meter can only measure one 30 Figure 9 Model UT207 208 OPERATING MANUAL conductor at a time to meausre more than one condutor at a time will cause deviation Note If the Meter does not display 00 00 when it is at 66A range press ZERO to zeroing After zeroing it allows 10 digits bouncing reading When the Meter is at 1000A ses it displays 0 and it is not allowed to press ZERO to zeroing When current measurement has been completed disconnect the connection between the conductor under test and the jaw and remove the conductor away from the transformer jaw of the Meter 31 Model UT207 208 OPERATING MANUAL H AC Current Measurement see figure 10 AN Warning The measurement ranges of current are 66
19. ter s back case and battery compartment are not closed to avoid electric shock Do not input higher than 600V between the two Meter s input terminal to avoid electric shock and damages to the Meter When the Meter working at an effective voltage over 70V in DC or 33V rms in AC special care should be taken for there is danger of electric shock Use the proper terminals function and range for your measurements Do not use or store the Meter in an environment 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 behind the finger guards To avoid electric shock do not touch the bare wires connectors unused input terminals or the circuit under testing during measurement Disconnect circuit power and discharge all high voltage capacitors before testing resistance continuity and diode 8 Model UT207 208 OPERATING MANUAL Replace the battery as soon as the battery indicator EH appears With a low battery the Meter might produce false readings that can lead to electric shock and personal injury When servicing the Meter use only the same model number or identical electrical specifications replacement parts The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident Soft cloth and mild detergent should be used to clean the surface of the Meter when servi
20. tions A General Specifications B Environmental Requirements Accuracy Specifications DC Voltage AC Voltage Resistance Diode Test Continuity Test Frequency Duty Cycle DC Current 30 32 35 37 38 38 39 40 40 41 42 42 43 44 45 45 Model UT207 208 OPERATING MANUAL Title I AC Current J Temperature ied ani Maintenance A General Service B Replacing the Battery Page 47 48 49 49 50 Model UT207 208 OPERATING MANUAL Overview This Operating Manual covers information on safety and cautions Please read the relevant information carefully and observe all the Warnings and Notes strictly A Warning To avoid electric shock or personal injury read the Safety Information and Rules for Safe Operation carefully before using the Meter Digital Clamp Multimeter Model UT207 UT208 hereafter referred to as the Meter are 3 5 6 digits with steady operations fashionable structure and highly reliable measuring instrument The Meter uses large scale of integrated circuit with double integrated A D converter as its core and has full range overload protection The Meter can measure AC DC Voltage AC DC Current Frequency Duty Cycle Resistance Diodes Continuity Surge Current and etc UT208 has an extra temperature feature Model UT207 208 OPE
21. tors before measuring continuity To test for continuity connect the Meter as follows 1 2 Insert the red test lead into the VQHz terminal and the black test lead into the COM terminal Set the rotary switch to 0 and press SELECT button to select 9 measurement mode The buzzer sounds if the resistance of a circuit under test is less than The buzzer may or may not sound if the resistance of a circuit under test is between to 10022 The buzzer does not sound if the resistance of 24 777 Black HII Figure 6 Model UT207 208 OPERATING MANUAL a circuit under test is higher than 1000 Note When continuity testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals 25 Model UT207 208 OPERATING MANUAL E Frequency Measurement see figure 7 AN Warning To avoid harms to you or damages to the Meter from eletric shock do not attempt to measure voltages higher than 600V AC DC although readings may be obtained The frequency ranges are 660Hz 6 6kHz 66kHz 660kHz 6 6MHz and 66MHz To measure frequency connect the Meter as follows 1 Insert the red test lead into the VOHz terminal and the black test lead into the COM terminal 2 Set the rotary switch to Hz Frequency measurement mode is
22. ured The measured value shows on the display Note When DC AC voltage measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals 19 Model UT207 208 OPERATING MANUAL B Measuring Resistance see figure 4 AN Warning To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before measuring resistance The resistance ranges are 6600 6 6kQ BEKO 660kO 6 6MQ and 66MQ To measure resistance connect the Meter as follows Insert the red test lead into the VOHz terminal 1 and black test lead into the COM terminal Set the rotary switch to gt Resistance measurement is a default or press SELECT to switch to measurement mode 2 20 Figure 4 Model UT207 208 OPERATING MANUAL 3 Connect the test leads across with the object being measured The measured value shows on the display Note To obtain a more precise reading you could remove the objects being tested from the circuit when measuring When resistance measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals 21 Model UT207 208 OPERATING MANUAL C Testing Diodes see figure 5 AN Warning To avoid damages to the Mete
23. zer is on 15 Q KQ MQ Q Ohm The unit of resistance kQ Kilohm 1x10 or 1000 ohms MQ Megohm 1 10 or 1 000 000 ohms 16 Hz kHz MHz Hz Hertz The unit of frequency KHz Kilohertz 1x10 or 1000 hertz MHz Meghertz 1 10 or1 000 000 hertz 17 mV V Volts The unit of voltage mV Millivolt 1x10 or 0 001 volts 18 A Amperes amps The unit of current 19 C The unit of temperature C Centigrade temperature 20 B The unit of temperature F Fahrenheit temperature 21 96 Duty cycle measurement 17 Model UT207 208 OPERATING MANUAL Measurement Operation A DC AC Voltage Measurement see figure 3 AN Warning To avoid harms to you or damages to the Meter from eletric shock do not attempt to measure voltages higher than 600V AC DC although readings may be obtained Figure 3 18 Model UT207 208 OPERATING MANUAL The DC Voltage ranges are 6 6V 66V and 600V The AC Voltage ranges are 6 6V 66V and 600V To measure DC AC voltages connect the Meter as follows 1 Insert the red test lead into the VOHz terminal and black test lead into the COM terminal 2 Set the rotary switch to V zz DC mesaurement mode and auto ranging is default Press SELECT to switch to AC measurement mode 3 Press 8Hz button to measure frequency or duty cycle but the frequency or duty cycle readings obtained from this range is only for reference 4 Connect the test leads across with the object being meas
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