victor 8145b
Contents
1. 6 These operations are described in remainder of Section 3 DISPLAY The meter has a 5 digit Liquid Crystal Display Primary Display and a 4 digit Liquid Crystal Display Secondary Display The display shows measurement readings measurement units and messages As shown in Figure 3 1 Zalibration state Autorange Hold N ee N MINMAX Time ON A Modifier N N NFS s a aaa f A Oo se A Secondary Display Reading Rate Function and Unit High Volta A 9 _7 Annunciators N bis KN Relative Modliier Oy poo gt t MEMORY A xX lt Primary Display Z N Z Diode Test Continuity Test Save Figure 3 1 Display Annunciators Amperes Input Terminal For et oa URGIN Volts Ohms Diode Test input Terminal IN PUT TERMINALS r 40AFUSED VQ gt 4 The input terminals as shown in Figure 3 2 are located on the right of the front panel The meter is protected against overloads up to the limits shown in Table 3 1 Exceeding these limits poses a hazard to both the meter and operator mA cou 500mA 250V FAST FUSE ALL INPUTS i s Mitlamperes Input Terminal Common Terminal Retern Terminal pita Ama P f r alli Meaeurements Figure 3 2 Input Terminals Table 3 1 Input Limits FUNCTION INPUT TERMINALS MAXIMUM INPUT Vises va and COM 1000V dc on all ranges V FREQ and dBm VQ and COM 750V ac rms 1002. m 500mA 250V i circuit are displayed ALL INPUTS The diode test measures the forward voltage of a semiconductor junction at approximately 0 8mA Readings are displayed in the 3V range at the fast measurement rates OL is displayed for voltages above 2 0V Under normal measurement condition the positive pole of diode is connected with the black test lead To perform a diode or transistor junction test pres E to select the diode function Then connect the test leads across the diode as shown in Figure 2 7 Notice how the test leads are placed Reversing the polarity will reverse bias the diode mA 500mA 250V FAST FUSE ALL INPUTS 1KV MAX l Y Figure 2 7 Diode Testing dBm Decibels measure The decibels modifier takes an ac voltage measurement converts it to dBm measure of decibels relative to one milliwatt and displays the result on the primary display Connect the test leads as shown in Figure 2 4 Press dBm to toggle in and out of the decibels mode When the decibels mode is selected dBm is shown on the primary display AC voltage value is shown on the secondary display Decibels can be selected only when ac voltage function is selected Decibels are always displayed in a single fixed range with 0 01 dB resolution Press the AUTO toggle in and out autorange you can also press the and chad tange mMemually A voltage measurement is converted to dBm using the f
3. an s 251 FAST FUSE ALL INPUTS RANGE TE um Figure 2 1 Front Panel The rear panel shown in Figure 2 2 contains the power line cord connector communication interface the Serial Number Label CAUTION TO AVOID SHOCK HAZARD CONNECT THE INSTRUMENT POWER CORD TOA POWER O RECEPTACLE WITH EARTH GROUND THERE ARE NO PARTS TO DISASSEMBLE NO MECHANICAL ADJUSTMENTS TO MAKE ITIS DISALLOWED TO OPEN THE CASE pag 220V AC 50Hz Figure 2 2 Rear Panel ADJUSTING THE HANDLE For bench top use the handle can be positioned to provide different viewing angles To adjust its position pull the ends out to a hard stop and rotate it to a position To remove the handle adjust it to the vertical stop position and pull the ends all the way out POWER A CAUTION TO AVOID SHOCK HAZARD CONNECT THE INSTRUMENT POWER CORD TO A POWER RECEPTACLE WITH EARTH GROUND NOTE Apply the rated voltage and frequency to the meter as marked on the rear panel of the meter TURING THE METER ON To turn the meter on press the POWERI button located on the lower left of the front panel If you turn the meter off you must wait five seconds before turning the meter back on If you do not the meter will not power up When the meter is turned on the full screen displays light while the instrument performs an internal self test of its digital circuitry These tests check RAM ROM A D and the display The meter
4. modifier For more details on the uses of each button refer to Section 3 OPERATION THE METER FROM THE FRONT PANEL SELECTING A MEASUREMENT RANGE Measurement ranges can be selected automatically by the meter in autorange or manually by the user In the autorange mode the meter selects the appropriate range for the measurement reading To manually select a range press AUTO to toggle in and out of the manual ranging mode or press or thad alnual range mode press or d ip udNetige or down range to the desired range For more details on ranging refer to RANGING in Section 3 TAKING SOME BASIC MEASUREMENTS A WARNING READ MULTIMETER SAFETY BEFORE OPERATING THIS METER The following procedures describe the basics of taking common measurements from the front panel These procedures are provided for the user who needs to get started quickly but dose not want to read the rest of the manual at this time However in order to take full advantage of your meter you should read the remainder of this manual carefully and completely A WARNING TO AVOID ELECTRICAL SHOCK OR DAMAGE TO THE METER DO NOT APPLY MORE THAN 1000V PEAK BETWEEN ANY TERMINAL AND EARTH GROUND THE METER IS PROTECTED AGAINST OVERLOADS UP TO THE LIMITS SHOWN IN TABLE 3 1 EXCEEDING THESE LIMITS POSES A HAZARD TO THE METER AND OPERATOR Measuring Voltage Resistance or Frequency To measure voltage resistance or frequency press the desired functi
5. 3MHz 30MHz VC5020 14 AMBIENT ENVIRONMENT STATION Temperature 23 2 C Relative humidity lt 70 RH Power varied at 5 of rated voltage Frequency of power rated value 1 Hz Warmup 2 hours for standard equipment 1 hour for measured meter OPERATION FOR CALIBRATOR Calibrate the functions and ranges listed in the table 5 2 Table 5 2 INPUT SIGNAL Function Range Input 1 First Input 2 Second Unit DC300mV 300 00 mV DC3V 3 0000 V Volts dc DC30V 30 000 DC300V 300 00 DC1000V 1000 0 V AC300mV 1KHz 30 00 300 00 mV AC3V 1KHz 0 3000 3 0000 V Volts ac AC30V 1KHz 3 000 30 000 V AC300V 50Hz 30 00 300 00 V AC750V 50Hz 75 0 750 0 V 3000 300 00 Q 3KQ 3 0000 KQ 30KQ 30 000 KQ Resistance 300KQ 300 00 KQ 3MQ 3 0000 MQ 30MQ 10 000 MQ 300MQ 10 000 MQ DCO 3mA 0 30000 mA DC3mA 3 0000 mA Current de DC30mA 30 000 mA DC300mA 300 00 mA DC10A 3 0000 A ACO 3mA 1KHz 0 03000 0 30000 mA AC3mA 1KHz 0 3000 3 0000 mA Current ac AC30mA 1KHz 3 000 30 000 mA AC300mA 1KHz 30 00 300 00 mA AC10A 1KHz 0 300 3 000 A Frequency 3V ofisine Wwav j 3KHz 3 0000 KHz NOTE To calibrator the meter connect the instrument power cord to a power receptacle with earth ground DC Volts calibration 1 Turn on the meter press the DCA dBm and button simultaneity to enter calibration mode and the CAL appears on t
6. the meter will read between 0 00 and 0 050 If the fuse is blown the meter will read gt 10MQ to OL Replacing the mA Input Fuse CAUTION FOR PROTECTION AGAINST FIRE REPLACE A BLOWN FUSE ONLY WITH ONE OF IDENTICAL The mA input fuse is mounted in the front panel input jack see Figure 3 2 To replace this fuse first unplug the line cord Then press in on the input jack and turn it 90 degrees counter clock wise slide out the fuse holder and fuse Replace a blown fuse with one of identical rating and reinsert the fuse and holder into the input terminal socket Secure the fuse holder by pressing in and turning the holder 90 degrees clockwise Replacing the 10A Input Fuse CAUTION OPENING THE CASE MAY EXPOSE HAZARDOUS VOLTAGES ALWAYS DISCONNECT THE POWER CORD AND MEASURING INPUTS BEFORE OPENING THE CASE The 10A input fuse is located inside the meter To replace the fuse 1 Remove the screw on the bottom of the case 2 Remove the case from the meter The fuse is visible on the main printed circuit which is connected with the 10A input terminal 3 Carefully remove the fuse and replace it with one rated as listed above 4 Reverse the disassembly procedure to reassemble the meter PERFORMANCE TESTS The meter should be calibrated and in operating condition when you receive it The following performance tests are provided to ensure that the meter is in proper operating condition If the instrument fails any of the performance tests the
7. lit on Change the continuity beep mode Press AUTO when CH BB annunciator is showed on the primary display the YES connect beep or NO disconnect beep is showed on the secondary display Press the HOLD save the set value the memory annunciator is lit on Change the compare beep mode Press AUTO when CO BB annunciator is showed on the primary display the YES inside the limiter or NO exceed the limiter is showed on the secondary display Press the HOLD save the set value the memory annunciator is lit on Factory set Press AUTO when FACTY annunciator is showed on the primary display select the default factory set To resume the factory set Press the HOLDI save the default value To exit factory set mode power off the instrument SECTION 4 Maintenance NOTE When servicing the meter use only the replacement parts specified INTRODUCTION Section 4 provides the information necessary for the user to perform basic maintenance Users should not attempt to perform maintenance not described in this section Qualified service personnel should refer to this Manual for complete maintenance service TO CAUTION AVOID ELECTRICAL SHOCK OR DAMAGING THE METER NEVER GET WATER INSIDE THE CASE TO AVOID DAMAGING THE METER HOUSING NEVER APPLY SOLVENTS TO THE METER IF THE METER REQUI
8. right or not newly Figure 5 4 8 Press the MNMX button again to select the 3A calibration point and the S annunciator appears on the top left corner of the LCD 1KHz appears on the secondary display indicates the frequency of the applied signal should be 1KHz 17 9 Placed the standard equipment in the STBY state Connect the standard equipment with the meter as shown in Figure 5 3 referred before 10 Applied the standard equipment 3A 1KHz to the meter 11 Keep the meter at least 20 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly 12 Complete all range Frequency Calibration 1 Placed the standard equipment in the STBY state press the FREQ button and the meter default enter to 83KHz range calibration state Connect the standard equipment with the meter as shown in Figure 5 1 referred before Applied the standard equipment 3V of sine wave 3KHz to the meter Press Ohms calibrat the SHIFT button of the meter to calibrate the indicated range displayed on the meter REL button to save the calibrated value and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the met
9. the next lower range is selected if there is one When one function of Volts DC Amps DC Volts AC Amps AC Resistance or FREQ is selected the selected range is displayed on the secondary display 8 to toggle MEASURING FREQUENCY FREQ Press the FREQ button to select the frequency function the frequency is displayed on the primary display and the selected range is displayed on the secondary display Select the rang manually or automatically Frequency Measurement Rates The rate at which frequency measurements are taken is selected by the meter automatically when the frequency function has been selected press RATE has no effect on the frequency update rate Frequency Sensitivity Selection Before a frequency measurement is started the amplitude of the input signal is sampled and the optimum ac voltage range is selected automatically For more information refer to the Section 6 for ac voltage sensitivity The input signal sensitivity is based on sine waveforms If the input signal is below the required level the frequency will be displayed as zero If the measurements are unstable the input signal may be near the threshold level SELECT A FUNCTION MODIFIER REL HOLD MNMX COMP Selec Poca ting a function modifier causes the meter to perform an TE oles ary action on an input e g convert to relative reading mode or compare to another val
10. 0V peak on all ranges mAZZZand mA mA and COM 500mA dc or ac rms andA 10A and COM 10A dc or ac rms Q VQ Hand COM 250V dc or ac rms on all ranges gt Va and COM 250V dc or ac rms on all ranges All Functions Any terminal to earth 1000V dc or ac peak SELECTING A MEASUREMENT FUNCTION Press a function button as shown in Figure 3 3 to select a measurement function When you select a function annunciators turn on to indicate the function selected Rang and full scale values are summarized in Table 3 2 for voltage current ohms and frequency Volts DC Amps DC Resistance ES a S ES Si K Ta DCA Q K _ Frequency Amps AC ga Vis ig ae TAY J aea Frea at tinuity eo gen or a Diode a e ESE Figure 3 3 Function Select Buttons Table 3 2 Voltage Current Ohms and Frequency Rang and Full Scale Value 7 FUNCITION RANG FULL SCALE INFORM ATION 300mV 330 00mV 3V 3 3000V a coh a 30V 33 000 V 760V ac rms 300 V 330 00 V 1000V 1100 0 V mA and mA 0 3mA 0 33000 mA 3mA 3 3000 mA AC current have not 0 3mA and 30mA 33 000 mA 3mA range 300 mA 330 00 mA A and A 10A 11 000A 300 Q 330 00 2 3KQ 3 3000 K 2 30 KQ 33 000 KQ Resistaiice 300 KQ 330 00 K Q 3MQ 3 3000 M Q 30MQ 33 000 M Q 100 MQ 110MQ 300Hz 330 00 Hz 3KHz 3 3000 KHz 30KHz 33 000 KHz Frequency 300KHz 330 00 KHz 30MHz ra
11. DUAL DISPLAY MULTIMETER USER S MANUAL A CAUTION THIS IS AN IEC SAFETY CLASS 1 PRODUCT THE GROUND WIRE IN THE LINE CORD MUST BE CONNECTED FOR SAFETY A WARRANTY Our company warrants to the original purchaser that each product it manufactures will be free from defects in material and workmanship under normal use and service for a period of one year from date of purchase Our company s warranty does not apply to fuses test leads or any product which in our company s opinion has been misused altered or damaged by accident or abnormal conditions of operation or handling To obtain warranty service contact the nearest Service Center or send the product with a description of the difficulty and postage prepaid to the nearest Service Center We assume no risk for the damage in transit We will at its option repair or replace the defective product free of charge or refund your purchase price However if we determine that the failure was caused by misuse alterations accident or abnormal condition of operation or handing you will be billed for the repair and the repaired product will be returned to you transportation prepaid SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shipment of our company s instruments should be made via United Parcel Service or Best Way prepaid The instrument should be shipped in the original carton or if it is not available use any suitable container that is rigid and of adequate size If a subst
12. RES CLEANING WIPE IT DOWN WITH A CLOTH THAT IS LIGHTLY DAMPENED WITH WATE OR A MILD DETERGENT DO NOT USE AROMATIC HYDROCARBONS CHLORINATED SOLVENTS OR METHANOL BASED FLUIDS WHEN WIPING DOWN THE METER THE LINE FUSE CAUTION OPENING THE CASE MAY EXPOSE HAZARDOUS VOLTAGES ALWAYS DISCONNECT THE POWER CORD AND MEASURING INPUTS BEFORE OPENING THE CASE 1 2 3 4 CURRENT Remove the screw on each side of the real bezel Remove the case from the meter The fuse is visible at the front of the main printed circuit assembly near the power The meter uses a 0 2A 250V Slow blow line fuse Carefully remove the fuse and replace it with one rated as listed above Reverse the disassembly procedure to reassemble the meter NPUT FUSES 12 300mA include 300mA and 10A inputs are protected by user replaceable fuses The 300mA input is protected by a fuse rated at 500mA 250V Fast blow The 10A input is protected by a fuse rated at 11A 250V Fast blow Testing Current Input Fuses Perform the following procedure to test these fuses 1 Short the VO input terminal and the mA terminal with a test lead 2 Press O to select the ohms function Insert the test lead probe into the mA input terminal If the fuse is good the meter will read between 10 to 19Q If the fuse is blown the meter will read gt 10MQ to OL 3 Remove the test lead probe from the mA input terminal and insert it into the 10A input terminal If the fuse is good
13. TRUE RMS AC VOLTAGE AC COUPLED Accuracy Range Resolution 20 50Hz 50 Hz 2KHz 2 10 KHz 10 20 KHz 20 30 KHz 300mA 10uA 2 30 0 5 30 1 80 5 50 10A imA 1 5 30 3 30 indicates that the range for frequency between 2 5KHz Maximum Input 300mA Protected with a 500mA 250V fast blow fuse 10A Protected with a 11A 250V fast blow fuse for 30 seconds maximum Maximum Crest Factor 3 0 OMH Range Resolution Accuracy Open Circuit Voltage Short Circuit Current 3000 10mQ About 1mA 3KQ 100 mQ 0 05 3 30 KQ 10 About 250uA 300 KQ 10Q 2 5V About 25uA 3 MQ 1000 0 1 3 About 2 5uA 30MQ 1 KO 0 2 3 About 0 25uA 100MQ 1 00KQ 0 5 3 About 0 25uA Maximum Input Voltage 250V dc or rms ac on all ranges DIODE TEST CONTINUITY Maximum Test Voltage lt 2V Test Current Approximate 1mA when measuring forward bias junction Continuous Resistance 1500 FREQUENCY Range Resolution Accuracy 300Hz 0 01 Hz 3KHz 0 1 Hz 0 05 2 30KHz 1 Hz 300KHz 10 Hz 20 3MHz 100 Hz 30MHz 1KHz Frequency Range 10Hz to 30MHz Applicable Function Volts AC Sensitivity of AC Voltage FREQUENCY LEVEL SINE WAVE 10Hz 300KHz gt 300mV 300KHz 30MHz gt 1 5V ENVIRONMENTAL Temperature Coefficient Operating Temperature Storage Temerature Relative Hum
14. ay read should meet the request listed in Section 6 500mA 250V FAST FUSE ALL INPUTS 1KV MAX STANDARD SOURCE 5520A SERVICE Figure 4 2 1oaruseo MAPA NORMAL AUX SCOPE 500mA 250V FAST FUSE ALL INPUTS 1KV MAX STANDARD SOURCE 5520A Figure 4 3 If you suspect that the meter has failed review this manual to make sure you are operating it correctly If the meter still fails to operate properly pack it securely in its original container if available and forward it postage paid to the nearest Service Center Assumes no responsibility for damage in transit INTRODUCTION SECTION 5 Calibration To ensure the accuracy and the stability of the meter the meter should be calibrated on a regular cycle of one year REQUIRED EQUIPMENT refer to the table5 1 Table5 1 Recommended Test Equipment Measurement Multifunction Range Accuracyt Output Recommended Equipment 300mV 3V 30V 300V DCV 0 0002 1000V 20 50Hz 0 025 Kee 300mV 3V 30V 300V 50 Hz 10KHz 0 015 1000V 10 20KHz 0 022 20 50KHz 0 03 3000 3KQ 30KQ 300KQ 0 004 OHMS 3MQ 30 MQ 100 MQ 0 05 FLUKE DEA 0 3mA 3mA 30mA 300mA 0 025 5520A 10A 0 1 20 50Hz 0 09 50 Hz 1KHz 0 04 38mA 30mA 300mA 1 5KHz 0 1 ACA 5 10KHz 0 16 10 30KHz 0 32 10A 50 Hz 5KHz 0 1 300Hz 3KHz 30KHz 300KHz 3MHz 30MHz_ F FREQ 0 00025
15. dBm Note In Diode and Continuity Testing the default rate is F In30M Q and 300M Q rang the default rate is S Connect with the USB Plug the one end of the devote USB cable to the communication connector on the real panel plug the other end of the cable to the USB port of the computer running the devote DMMVIEW_8145B software set the corresponding connector port to achieve online When success the COMM annunciator is lit on the instrument transmits measured value and state to computer thus the computer can remote Control display record Data Analysis print all the measurement process use the software stop the communication the instrument stop transmit measured value and the COMM annunciator POWER UP CONFIGURATION Factory Setting of Power Up Configuration When the meter is turned on and completes the power up sequence it assumes its power up disappear configuration The power up configuration set at the factory is shown in Table3 6 Table 3 6 Power Up Configuration Set at Factory PARAMETER CONFIGURATIONS REMARK Function Setting DC volt DCV Range Mode Autorange AUTO Reading Rate Slow S Reference Impedance for dBm 600Q Changeable Compare set value 0 MIN MAX AVG 0 Relative Base value 0 Frequency of Power 50Hz Changeable Back Light Time 0000 S Changeable Continuity beep when the input drops below 1500 Changeable Compare beep if the reading lower or higher se
16. e front panel Section 3 is organized so that related operations and functions are grouped together SECTION 4 MAINTENANCE Describes how to perform basic maintenance and how to replacing fuses as order SECTION 5 CALIBRATION Introduces the required equipment ambient environment station for calibration and the process of calibration SECTION 6 SPECIFICATIONS MULTIMETER SAFETY The Dual Display Multimeter has been designed and tested according to IEC Publication 1010 Safety Requirements for Electronic Measuring Apparatus This manual contains information and warnings 2 which must be followed to ensure safe operation and retain the meter in safe condition Some common international electrical symbols used in this manual are shown below OFF power O g SWITCH POSITION DANGEROUS VOLTAGE ON power EARTH GROUND SWITCH POSITION AC ALTERNATING WARNING INFORMATION A CURRENT E DC DIRECT CURRENT Before using the meter read the following safety information carefully Avoid working alone Follow all safety procedures for equipment being tested Inspect the test leads for damaged insulation or exposed metal Check test lead continuity Damaged leads should be replaced Be sure the meter is in good operating condition Select the proper function for your measurement To avoid electrical shock display when working above 30V dc or 30V ac RMS Disconnect the li
17. function and the method of the line connection right or not newly AC Volts calibration Placed the standard equipment in the STBY state press the ACV button to enter to AC Volts calibration state Connect the standard equipment with the meter as shown in Figure 5 1 before 1 7 Press the Press the SHIFT button of the meter enter to the 300mV range calibration MNMX button of the meter select the 30mV calibration point and the F annunciator appears on the top left corner of the LCD 1KHz appears on the secondary display indicates the frequency of the applied signal should be 1KHz Applied the standard equipment 30mV 1KHz to the meter Keep the meter at least 20 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly Press the MNMX button again to select the 300mV calibration point and the S annunciator appears 16 10 11 on the top left corner of the LCD 1KHz appears on the secondary display indicates the frequency of the applied signal should be 1KHz Applied the standard equipment 300mV 1KHz to the meter Keep the meter at least 20 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if
18. has passed all tests and is ready for normal operation if an error code is not displayed After the meter completes the power up sequence it assumes the power up measurement configuration stored in non volatile memory The power up configuration set at the factory is shown in Table 3 6 To change the power up configuration refer to CHANGING THE POWER UP CONFIGURATION in Section 3 USING THE PUSHBUTTONS The pushbuttons on the front panel select meter functions and operations A summary of basic pushbutton operations is shown in Figure2 3 FUNCTION BUTTONS Press to Selecta Function pcv bca Q acy ACA FREQ FUNCTION MODIFIER BUTTONS Press to Select a Modifier Mode dBm gt E RANGE BUTTONS Press to Select a Range ti BACK LIGHT ias REL Nx Comp Press in to Power up V CREEA NMS 2 POME l N RANGE x x F An SHIFT RATE HOLD amp hur a Lv ra Press to Step Through Measurement Rate Slow Fast Figure 2 3 Summary of Basic Pushbutton Operations Pushbuttons can be used in two ways You can Press a single button to select a function or operation EXAMPLE Press ACV to select volts ac function Press a combination of buttons one after the other EXAMPLE Press ACV to select volts ac function and then press 4 REL to select the decibels
19. he top left corner of the LCD the CAL annunciator always appears in calibration mode and the meter default enter to 300mV DC volts calibration mode 2 Placed the standard equipment in the STBY state and connected with the meter as shown in Figure 5 1 3 Set the standard equipment to DCV and adjust NORAL AU Scope until the display reads 300mV press the OPR 5 button to output 4 Press the SHIFT button of the meter to calibrate the rated range for the DCV function ene mA 500mA 250V FAST FUSE ALL INPUTS 1KV MAX ale 15 standard source 5520A and the display reads the calibrated point Press the REL button to save the calibrated value after 5 seconds and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly Press the a button to change range in calibration mode the meter is in manual range Set the standard equipment to the required output Repeat step 4 to 7 until complete all range Note Be sure that the standard equipment is in the STBY state before change the function DC 300mA amps calibration Placed the standard equipment in the STBY state press the DCA button and the meter default enter to 300mA DC Amps calibration state Connect the standard equ
20. hod of the line connection right or not newly ion Keep the meter at least 5 seconds press the 1 Placed the standard equipment in the STBY state press the O button and the meter default enter to 3000 range calibration state 2 Connect the standard equipment with the meter as shown in Figure 5 5 mA 500mA 250V ALL INPUTS 1KV MAX as NORMAL com Figure 5 5 standard source 5520A 3 4 5 Applied the standard equipment 300Q to the meter and select 2 wire compensation on Press the SHIFT button of the meter to calibrate the indicated range displayed on the meter Keep the meter at least 10 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly 6 Press the Ga button to change rang 7 Applied the standard equipment indicated on the display to the meter once the calibrated range above 300KQ select 2 wire compensation on remove the line connected with the AUX terminal of the standard equipment 8 Repeat step 5 to step 7 until complete all range INTRODUCTION This Section contains the specifications of the Dual Display Multimeter These specifications assume Slow readi ng rate A 1 year calibrati
21. idity GENERAL Common Mode Voltage Size Weight Power ACCESSORIES A couple of test leads A power line cord A user s manual lt 0 1 times the applicable accuracy specification per degree C for 5 C to 18 C and 28 C to 40 C 5 C to 40 C 25 C to 50 C lt 90 at 5 C to 28 C non condensing lt 80 at 28 C to 40 C lt 70 at 10 C to 40 C for the 300KQ 3MO and 30MO ranges 1000V dc or peak ac maximum from any input to earth 245mm deep 220mm wide 82mm high about 2Kg about 5VA SECTION 7 Points for Attention to Use of Operation Instruction The present operation instruction is subject to change without notice The content of the operation instruction is regarded as correct Whenever any user finds its mistakes omission etc he or she is requested to contact the manufacturer The present manufacturer is not liable for any accident and hazard arising from any maoperation The functions described in this operation instruction should not be used as grounds to apply this product to a particular purpose 21
22. ipment with the meter as shown in Figure 5 2 Adjust the standard equipment until the display reads 300mA press the OPRI button to output 1 2 3 standard source 5520A Figure 5 2 DC 10A amps calibration Placed the standard equipment in the STBY state press the DCA button to enter to DCA calibration 1 state NORMAL AUX SCOPE standard source 5520A F igure 5 3 4 Press the SHIFT button of the meter to calibrate the 300mA range and the display reads the calibrated point j 5 Press the REL button to save the calibrated value mites E after 5 seconds and the SAVE displayed on the tH LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly 2 Connect the standard equipment with the meter as shown in Figure 5 3 3 Press the Lim button to select the 10A range 4 Press the SHIFT button of the meter to calibrate the 10A range and the display reads 3A Applied the standard equipment 3A to the meter 5 Press the REL button to save the calibrated value after 5 seconds and the SAVE displayed on the LCD if the ERR displayed check the set value for va 10A FUSED 500MA 250V FAST FUSE ALL INPUTS 1KV MAX ade the standard equipment and inspect the
23. itute container is used the instrument should be wrapped in paper and surrounded with at least four inches of excelsior or similar shock absorbing material CLAIM FOR DAMAGE IN SHIPMENT TO ORIGINAL PURCHASER The instrument should be thoroughly inspected immediately upon original delivery to purchaser All material in the container should be checked against the enclosed packing list The manufacturer will not be responsible for shortages against the packing sheet unless notified immediately If the instrument is damaged in any way a claim should be filed with the carrier immediately To obtain a quotation to repair shipment damage contact the nearest Service Center Final claim and negotiations with the carrier must be completed by the customer Section 1 Introduction INTRODUCING THE DUAL DISPLAY MULTIMETER In this manual WARNING is reserved for conditions and actions that pose hazard s to the user CAUTION is reserved for conditions and actions that may damage your meter NOTE This manual contains information and warnings that must be followed to ensure safe operation and retain the meter in safe condition A WARNING READ THE MULTIMETER SAFETY SHEET BEFORE USING THE METER The Dual Display Multimeter is a 5 digit high resolution mode The meter is designed for bench top The features provided by the meter are Adual Liquid Crystal Display that allows two properties of an input signal to be displayed at the same time T
24. meter at least 20 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly Press the LA button change the range Repeat step 3 to step 10 until complete all range AC 10A amps calibration Placed the standard equipment in the STBY state press the ACA button to enter to AC Amps calibration state Connect the standard equipment with the meter as shown in Figure 5 4 Press the x button to select the 10A range Press the SHIFT button of the meter to calibrate the 10A range Press the MNMX button of the meter select the 0 3A calibration point and the F annunciator appears on the top left corner of the LCD 1KHz appears on the secondary display indicates the frequency of the applied signal should be 1 KHz 6 Applied the standard equipment 0 3 A 10A FUSED 1KHz to the meter 7 Keep the meter at least 20 seconds press the REL button to save the calibrated value H and the SAVE displayed on the LCD if the eam ERR displayed check the set value for in the standard equipment and inspect the function and the method of the line NORMAL 500mA 250V FAST FUSE standard source 5520A connection
25. n calibration adjustment and or repair is needed To perform these tests you will need a 5520A Multifunction Calibrator or equivalents Each of the measurements listed in the following steps assume the instrument is being tested after a one hour warmup in an environment with an ambient temperature of 18 to 28 C and a relative humidity of less than70 NOTE All measurements listed in the performance test tables are made in the slow reading rate unless otherwise noted 1 Connect a test lead from the Output NORMAL HI and LO connectors of the 5520A to the MQ and M connectors on the meter see Figure 4 1 Select the Volts dc Volts ac Resistance or Frequency function and range on the meter and the input level from the 5520A The display should meet the request listed in Section 6 2 Connect a test lead from the output AUX HI and LO connectors of the 5520A to the mA 10AFUSED VAJH I m 500mA 250V FAST FUSE ALL INPUTS AX 13 and COM connectors on the meter see Figure 4 2 Select the Current ac or Current dc function and 300mA range on the meter and the input level from the 5520A The display should meet the request listed in Section 6 3 Connect a test lead from the output 20A HI and LO connectors of the 5520A to the 10A and COM connectors on the meter see Figure 4 3 Select the Current dc or Current ac function and 10A range on the meter and the input level from the 5520A The displ
26. nge have not full scale 3MHz 3 3000 MHz 30MHz ANGING AUTO ax v Ranging operations are performed using the AUTO Autoranging x and W buttons see Figure 3 4 When you are in the autorange mode the AUTO annunciator is lit Press to Toggle In and Out of Autorange ES Press to Enter Manual Range and Up Range ne Manual Ranging Press AUTO In manual range the meter remains in the selected range regardless of input Press AUTO Press to Enter Manual Range and Down Range ta In autorange the meter automaticall greater than full scale If no higher y selects the next higher range when a reading is range is available OL overload is displayed The meter automatically selects a lower range when a reading is less than approximately 10 of the selected range Figure 3 4 Range Selection Butons to toggle in and out of manual ranging The range you are in when you enter the manual range mode becomes the selected range back to autoranging Press L to up range If the ab pressed when the meter is still in autorange manual ranging is selected the AUTO annunciator turns off and the next higher range is selected if there is one Press xg to down range If the wis pressed when the meter is still in autorange manual ranging is selected the AUTO annunciator turns off and
27. ollowing formula dBm 10 lg 1000 value reference impedance where value is the measurement value and displayed on the secondary display The reference impedance can be changed Refer to Changing the Power UP Configuration later in Section 3 Communication Interface The real time measured value can be transmitted to the computer by the devote USB cable and the VICTORVIEW_8145B software refer to using the communication function in section 3 SECTION 3 Operating the Meter from the Front Panel INTRODUCTION Section 3 explains how to operate the meter from the front panel FRONT PANEL OPERATIONS The following operations can be performed from the front panel Select a measurement function DCV ACV DCA ACA Q FREQ dBm BEH and Select function modifiers that cause the meter to display relative readings REL minimum maximum or average values MN MX Enter the Touch Hold mode HOLD to hold a reading on the display Set Measurement Rate RATE change the rate as F Fast or S Slow Take a measurement and compare COMP it to a setting value Select the manual or autorange mode AUTO up range or Lam howneange manually to desired range Turn on or turn off the back light when arrive the setting time the back light can automatically off Power on or off the power supply POWER
28. on button and connect the test leads as shown in Figure 2 4 The meter will select the appropriate range in the autorange mode Measuring Current To measure current insert the red test lead in the mA input terminal for currents up to 330mA or in the 10A input terminal for higher current and insert the black test lead in the COM terminal Connect the test leads as shown in Figure 2 5 m 10aFuseD VQ gt 4 S mA 500mA 250V FAST FUSE ALL INPUTS 1KV MAX DC Voltage Pesistance or AC Voltage Figure 2 4 Measuring DC Voltage Resistance AC Voltage NOTE After measuring high current using the 10A input thermal voltages are generated that may create errors when making low level dc measurements of volts current or ohms To make the most accurate measurements allow up to ten minutes for the thermals to settle out lt CURRENT S SOURCE CS J co ALL INPUTS 1KV MAX SV mA 500mA 250V Figure2 5 Measuring Current Diode Continuity Testing The continuity test determines whether a circuit is intact i e has a resistance less than about 1500 To perform a cole hity test press and connect the test leads as e shown in Figure 2 6 The beeper emits a continuous beep when the input i ns drops below 1500 Beep condition can be changed refer to Changing the a aan Power UP Configuration later in Section 3 and the readings for the test
29. on cycle An operating temperature of 18 C to 28 C 64 4 F 82 4 F One hour warmup Relative humidity not exceeding 70 non_condensing Accuracy is expressed as percentage of reading digits 18 SECTION 6 Specifications READING RATES Rate Readings per Second Slow S 3 Fast F 5 7 DC VOLTAGE Range Resolution Accuracy 300mV 10uV 3V 100uV 30V imV 0 03 3 300V 10mV 1000V 100mV Input Impedance 1000MOQ at 300mV and 3V 10M at other ranges Normal Mode Rejection Ratio NMR 60dB at 50Hz or 60Hz Common Mode Rejection Ratio CMR 120dB at 50Hz or 60Hz Maximum Input 1000V peak TRUE RMS AC VOLTAGE AC COUPLED Accuracy Range Resolution 20 50Hz 50 Hz 10KHz 10 20KHz 20 30KHz 30 50KHz 300mV 10uV 1 80 5 80 10 150 2 30 3V 100uV 0 5 30 30V 1mV 3 30 300V 10mV 750V 100mV REMARK Accuracy specifications apply to the range from 10 to 100 Input Impedance 1MQ in parallel with 0 1uF Maximum Crest Factor 3 0 Common Mode Rejection Ratio gt 120dB at 50Hz or 60Hz 1KQ unbalanced resistance Maximum Input 750V rms 1000V peak 19 DC CURRENT Range Resolution Accuracy Input Impedance 300 mA 10uA 0 1 3 10 10A 1mA 1 5 3 0 010 Maximum Input 300mA Protected with a 500mA 250V fast blow fuse 10A Protected with a 11A 250V fast blow fuse for 30 seconds maximum
30. ost digit on the primary display is flashing then can set the low point press AUTO to select the digit to be set each press AUTO causes the digit to the right to be selected and flashing press or to up or down the flaski g digiigHach subsequent press the COMP button toggles between high set low set and compare measurements taken To exit the Compare Modifier press and hold down the COMP button for two seconds or press other function buttons Selecting the Compare Modifier turns off autoranging and locks in the present range Make sure you are in the correct range before selecting the Compare Modifier The function modifier is relative to the measurement function refer to the Table 3 5 Table 3 5 function modifier and measurement function REL HOLD MNMX COMP Function DCV v J J J ACV v J J J DCA v J J J 10 ACA v v J Ki Q v v J VJ FREQ J J J dBm v SELECTING A MEASUREMENT RATE RATE The meter takes measurements at one of two user selectable rates slow and fast The rate selected is indicated by S F on the display Press the RATE to change the measurement rates at S or F The selected rate applies to DCV DCA Q ACV ACA
31. played on the secondary display To exit the MN MX AVG modifier press and hold down the IMN MX button for two seconds or press other function buttons Selecting the MN MX AVG modifier turns off autoranging and locks in the present range Make sure you are in the correct range before selecting the MN MX AVG modifier COMP Compare Modifier The compare function COMP provides an easy way to determine if a reading falls within a designated range of values In the compare mode the meter displays a reading in the secondary display and indicates in the primary display if that value is lower CO LO than higher CO HI than or within a range PASS you selected if the reading lower or higher the beeper emits a continuous tone Compare Modifier can be used under dc voltage ac voltage dc current ac current and omh function in compare mode the meter is in manually range mode Following the step to enter Compare Modifier Select a function and a range Press COMP to toggle in Compare Modifier Before selecting the compare function set the high and low compare point first when compare modifier selected MAX annunciator lights and the leftmost digit on the primary display is flashing then can set the high point press AUTO to select the digit to be set each press AUTO causes the digit to the right to be selected and flashing press or to a plor down th amp dshing digit Press the COMP again MIN annunciator lights and the leftm
32. relative modifier REL turns off autoranging and locks in the present range Make sure you are in the correct range before selecting the relative modifier If you press other buttons after the relative modifier has been selected you will automatically exit REL HOLD Touch Hold Modifier The Touch Hold modifier allows you to hold the measurement reading on the display Press HOLDI to select the Touch Hold modifier When Touch Hold is selected HOLD annunciator is lit on and the beeper emits a single beep Press HOLD again to exit Touch Hold modifier and the beeper emits a single beep MN MX AVG Minimum Maximum Average Modifier The MN MX modifier causes the meter to store the minimum and maximum inputs measured since the MN MX AVG modifier was selected Press MN MX to select the MN MX AVG modifier When the MN MX AVG modifier is first selected the minimum maximum and average values are set to the displayed reading and the MAX annunciator lights once the maximum value showed on the primary display the beeper emits a single beep Press MN MX again to display the minimum reading and the MIN annunciator lights once the minimum value showed on the primary display the beeper emits a single beep Press MN MX again to display the average reading on the primary display AVG annunciator lights Each subsequent press the MN MX button toggles among the minimum maximum and average measurements taken The measurement reading dis
33. rue rms AC 30 MHz in frequency measurement 10uV sensitivity in volts DC Decibels with variable reference impedance measurement capability Acompare mode to determine if a measurement is within above or below a designated range Slow and Fast selectable count resolution with reading speeds of 3 and 6 reading per second respectively Built in self tests with closed case calibration no internal calibration adjustment Isolation of Universal Serial Bus USB Port Remote Control display record Data Analysis print with computer WHERE TO GO FROM HERE This manual has been organized to assist you in getting started quickly It is not necessary for you to read the entire manual before using the meter effectively However we recommend that you do so in order to use your meter to its full advantage Begin by scanning the Table of Contents to familiarize yourself with the organization of the manual Then read Section 2 GETTING STARTED Refer to the appropriate section of the manual as needed The contents of each section are summarized below SECTION 1 INTRODUCTION Introduces the Dual Display Multimeter describing its features and users manual SECTION 2 GETTING STARTED Explains how to prepare the meter for operation and get started quickly taking basic measurements from the front panel SECTION 3 OPERATING THE METER FROM THE FRONT PANEL Provides a complete description of each operation that can be performed using the pushbuttons on th
34. t value Changeable Changing the Power Up Configuration You can change the power up configuration to one that more closely meet your needs and preferences To change the Power Up Configuration power up the meter and press SHIFT simultaneity 1 Change Back Light Time Press AUTO when bLOFF is annunciator showed on the primary display The value of setting is showed on the secondary display then press Le or 5 to step up or down the setting value with 30S The limit of the setting value is 3600S 1 hour when the setting value is 0000 indicates that back light only be turned off manually Press the HOLD save the set value the memory annunciator is lit on 11 Change Frequency of Power Press AUTO when FrSET annunciator is showed on the primary display the Frequency is showed on the secondary display then press or A Lo to select the frequency at 50Hz or 60Hz Once change the Frequency of Power the meter should be calibrated newly Press the HOLD save the set value the memory annunciator is lit on Change the Reference Impedance Press AUTO when CONS annunciator is showed on the primary display the Reference Impedance is showed on the secondary display Then press or E amp sele he needed value supplied value are 50 75 93 100 150 300 500 600 800 1200 2400 unit O Press the HOLD save the set value the memory annunciator is
35. the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly Press the La button to change range Repeat step 3 to 10 until complete all range AC 30 300mA amps calibration 1 10 11 Placed the standard equipment in the STBY state press the ACA button and the meter default enter to 30mA AC calibration state Connect the standard equipment with the meter as shown in Figure 5 2 referred before Press the SHIFT button of the meter to calibrate the 30mA range Press the MNMX button of the meter select the 3mA calibration point and the F annunciator appears on the top left corner of the LCD 1KHz appears on the secondary display indicates the frequency of the applied signal should be 1KHz Applied the standard equipment 3mA 1KHz to the meter Keep the meter at least 20 seconds press the REL button to save the calibrated value and the SAVE displayed on the LCD if the ERR displayed check the set value for the standard equipment and inspect the function and the method of the line connection right or not newly Press the MNMX button again to select the 30mA calibration point and the S annunciator appears on the top left corner of the LCD 1KHz appears on the secondary display indicates the frequency of the applied signal should be 1KHz Applied the standard equipment 30mA 1KHz to the meter Keep the
36. ue before a reading is E displayed To use a function modifier press a function ae button to select a primary function and then press a function modifier button See Figure 3 5 REL Relative Readings Modifier Press REL to select the relative modifier When the relative modifier is selected the last valid reading is stored as the relative base and displayed on the secondary display The reading on the primary display is always the difference between the relative base and an input measurement and the A annunciator turn on REL present reading relative base For example if the relative base is 15 000V and the present reading is 14 100V the display will show 0 900V A WARING REMEMBER A RELATIVE READING MAY NOT INDICATE THE PRESENCE OF DANGEROUS VOLTAGES AT THE INPUT CONNECTORS OR TEST LEADS USE CAUTION TO AVOID ELECTRICAL SHOCK OR DAMAGE TO THE METER Press REL again the relative base is displayed on the secondary display The reading on the primary display is REL and the annunciator turn on simultaneous present reading relative base REL x100 relative base For example if the relative base is 15 000V and the present reading is 14 100V the display will show 6 Press REL again to exit the relative modifier NOTE The relative modifier cannot be selected if the display shows OL or is blank The display would be blank for example because of range changes Selecting the
37. ve test lead V 2 t before disconnecting the common test lead COM Disconnect the power and discharge high voltage capacitors before testing in Q and gt When making a current measurement turn the circuit power off before connecting the meter in the circuit Check meter fuses before measuring transformer secondary or motor winding current See Section 4 MAINTENANCE An open fuse may allow high voltage build up which is potentially hazardous Section 2 Getting Started INTRODUCTION Section 2 explains how to prepare the meter for operation discusses general operating features and walks you through the basics of taking some common measurements GETTING STARTED Unpacking and Inspecting the Meter Carefully remove the meter from its shipping container and inspect it for possible damage or missing items If the meter is damaged or something is missing contact the place of purchase immediately Save the container and packing material in case you have to return the meter Front Panel and Rear Panel The front panel Shown in Figure 2 1 has three main elements the input terminals on the right the display and the pushbuttons The pushbuttons are used to select major functions ranging operations Pa j WIGTOR 8145B DUAL DISPLAY MULTIMETER and function modifiers These va elements are described in detail O in Section 3 10A FUSED ne Minmaxavo Ous BEB Bs ABBBBR AC DC gt H
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