Victor 88A User manual
Contents
1. 1 SUMMARIZE The instrument isa steady performance battery driven digital mul timeter It uses the LCD with30mm high figure to make the reading clear Thefunction of 15sec backlight displaying and overload protection make operationmore convenient The instrument hasthe function ofmeasuring DCV ACV DCA ACA resistance capacitance test temperature and frequency anddiode triode and continuity test The instrument takes dual integral A Dconverter as key point is anexcellent tool 2 SAFETY NOTE This series meter s design meets thearticle of IEC1010 security stan dard enacted byIEC Please readthe following before operation 1 Do not inputa limited voltage higher than DC1000V orAC 750Vwhen measuring ranges 2 Voltageless than 36Vis a safety voltage When measuring voltage higher than DC 36V AC 25V check the connectionand insulation of testleads to avoidelectric shock 3 Be sure tokeep the testleads off thetesting points whencon verting function andrange 4 Select correct functionand range toavoid fault operation 5 When measuring current do not inputcurrent over 20A 6 Safety symbols ZN exists high voltage S GND E dual insulation must refer tomanual A low battery 3 CHARACTERISTIC 1 GENERAL 1 1 Displaying LCD displaying 1 2 Max indication 1999 3 1 2 auto polarity indication 1 3 Measuring method dualslope A Dtransfer 1 4 Sampling rate approx 3 times sec2. 1 5 Over range indication MSD displays 1 or 1 1 6 Low battery indication symbol displays 1 7 Operation 0 40 C relative humidity lt 80 1 8 Power one 9V battery NEDA1604 6F22 or equivalent 1 9 Size 189X97X35 mm lengthX width X height 1 10 Weight approx 375g including a battery 1 11 Accessories test leads user manual holster gift box and 9v battery 1 12 testing accessories a pair ofalligator clip atest accessory for Triode banana type hotthermocouple 2 TECHNICAL CHARACTERISTIC 2 1 Accuracy a Xrdg d at 23 5 C R H lt 75 one year guaranteed fromthe production date 2 2 TECHNICAL DATA 2 2 1 DC VOLT DCV Range Accuracy Resolution 200mV 100uV 2y 0 5 3 tmy 20V 10mV 200V 100mV 1000V 1 0 5 1V Input resistance 10MQ Overload protection 200mV range 250V DCor AC peak value Other range 1000VDC orAC peak value 2 2 2 AC VOLT ACV Range Accuracy Resolution 2V ImV 20V 0 8 5 10mV 200V 100mV 750V 1 2 5 1V Input resistance 1OMQ Overload protection 1000V DC or AC peak value Frequency response lessthan 200Vrange 40 400 Hz 750V range 40 200 Hz Displaying sine waverms mean value response 2 2 3 DC CURRENT DCA Range Accuracy Resolution 20uA 0 01uA 200uA 0 8 4 0 1uA 20mA 10uA 200mA 1 2 4 100uA 2A 1 5
3. 5 ImA 20A 2 0 5 10mA Max input voltdrop 200mV Max input current 20A the test timeshould be in10 seconds Overload protection 2A 250V quick action fuse 20Aun fused 2 2 4 AC CURRENT ACA Range Accuracy Resolution 200mA 2 0 5 100uA 2A 3 0 5 ImA 20A 3 0 10 10mA Max measuring voltdrop 200mV Max input current 20A the test time should be in10 seconds Overload protection 2A 250V quick action fuse 20Aun fused Frequency response 40 200 Hz Display sine wave RMS mean value response 2 2 5 RESISTANCE Q Range Accuracy Resolution 2002 0 8 5 0 12 2kQ 1Q 20kQ 0 8 3 102 200k Q 1002 2M2 1kQ 200M 2 5 0 RDG 10 20 100 kQ Open voltage less than 3V Overload protection 250VDC andAC peak value NOTE A at2002 range should makethe test leads short and measure the wireresistance then subtract from the actual measuring B at 200M range should makethe test leads short the meter will display 1 0M It s normaland has noeffect on the accuracy Shouldbe subtracted fromactual measuring 2 2 6 CAPACITANCE C Range Accuracy Resolution 20nF 10pF 2uF 2 5 20 InF 200uF 100nF Overload protection 36V DC orAC peak value 2 2 7 DIODE AND CONTINUITY TEST Range Displaying Test condition x8 The positive DC current is Positive voltage drop of approx mA negativ
4. Q terminal 2 Set the knob to aproper DCV range and connectthe leads crossly to the electric circuit undertest LCD displays polarity and voltage undertest connected bythe red testlead Note 1 Firstly users should set the knob to the highest range ifusers had no ideaabout the range of voltage undertest and then select the properrange based ondisplaying value 2 If LCD displays 1 it meansmeter is overthe max Value of range thus should set the knob to ahigher range 3 Do notinput a voltageover DC 1000V 4 Be carefully while measuring ahigh voltage DONOT touch the circuit 4 3 ACV measurement 1 Applythe black testlead to COM terminal and thered one to V Q terminal 2 Set the knobto a proper ACV range and then connect the leads crossly to theelectric circuit undertest NOTE 1 Firstly users should set the knob to the highest range if users had noidea about the range of voltage under test and then select the proper range basedon displaying value 2 If LCD displays 1 it means meter is overthe max value of range thus should setthe knob toa higher range 3 Do notinput a voltage over 750Vrms 4 Be carefully while measuring a highvoltage DO NOTtouch the circuit 4 4 DCA Measurement 1 Applythe black testlead to COM terminal and thered one to mA terminal the Max 2A orto 20A the Max 20A 2 Set the knob to aproper DCA range and connectthe leads crossly to theele
5. ancelled 4 12 AUTO POWER OFF The meter willbe into sleeping mode when itworks for 20 10 minutes Press POWER key twice torestart the power 4 13 BACKLIGHT Press B L key to turnon the backlight and it willturn off after 15 secretary NOTE When turning onbacklight the working current will be enlarged it leadsto shorten battery usage and enlarge accuracy of some functions 5 Maintenance Do not tryto modify the electric circuit 5 1 Keep the meter away from water dust andshock 5 2 Do notstore and operate the meter underthe condition ofhigh temperature high humidity combustible explosiveand strong magnetic place 5 3 Wipethe case witha damp clothand detergent donot use abrasives and alcohol 5 4 If donot operate fora long time should take outthe battery to avoid leakage 5 4 1 When signal displays shouldreplace the battery following the steps 5 4 1 1 Unlock the button and remove the battery case 5 4 1 2 Takeout the oldbattery and replace the new one It s better to usealkaline battery forlonger life 5 4 1 3 Fit onthe battery caseand lock the button 5 4 2 fuse change When replacing fuse please change another same type andspecification fuse 6 If the meterdoes not work properly checkthe meter as following Conditions Way tosolve MTurn on thepower No reading onLCD WSet the HOLDkey to acorrect mode MReplace battery signal appears MReplace battery No curren
6. ctric circuit undertest LCD displays polarity and current undertest connected bythe red testlead NOTE 1 Firstly users shouldset the knobto the highestrange if users had noidea about therange of currentunder test and then select the proper range basedon displaying value 2 Ifthe LCDdisplays 1 it means thecurrent is over range Now you needto set the knob to the higher 3 Max input currentis 2Aor 20A subjectto where thered test lead applyto too largecurrent will blowthe fuse Too large continuous currentwill heat thecircuit affect theaccuracy or damagethe meter while measuring at the range of 20A because there isno protection 4 5 ACAMeasurement 1 Applythe black testlead to COM terminal and thered one to mA terminal the Max 2A orto 20A the Max 20A 2 Set the knob to aproper ACArange and connectthe leads crossly to theelectric circuit undertest NOTE 1 Firstly users shouldset the knobto the highestrange if users had noidea about therange of currentunder test and then select the proper range based on displaying value 2 Ifthe LCDdisplays 1 it means thecurrent is over range Now youneed to setthe knob tothe higher 3 Max input currentis 2Aor 20A subject to where the red test lead applyto too largecurrent will blowthe fuse Be sure thetest is lessthan 10 seconds Please keep the leads off thecircuit while switching the function andrange knob Too largecontinuous current willhea
7. e diode voltage is approx 3V gt H Buzzer sounds the resista nce is less than 70 20 Q Overload protection 250V DC or AC peak value Warning DONOT input any voltage at this range for safety 2 2 8 TRANSISTOR hFEDATA TEST Range Displaying open voltage is approx 3V Test condition Basic current isapprox hFE NPNorPNP O 1000 te OUA Vee is about3V 2 2 9 HOT WIRE TEST Range Displaying Alarming Way condition TEST 000or1 sound light Standard AC hot wiretest Overload protection DC 500V orAC peak value Gal CAUTION BE CAREFULWHEN YOU OPERATE IT 4 OPERATION 4 1 Panel description SEE THE FIG 1 LCD display the measuring value 2 1 POWER switch turnon off the power 2 2 B L switch turnon off the back light ee 3 2 3 HOLD key pressit the max of presently measured value is held on LCDand HOLD symbol displays Pressit again HOLD symbol disappears andthe meter is exited the holding mode 2 4 The light ofhot wire testing 3 Range knob toselect measuring functionand range 4 Voltage resistance and frequency COM 5 GND the anodeCOM of testaccessory 6 2A currenttest COM thecathode COM oftest accessory 7 COM for measuring current 20A 4 2 DCV measurement 1 Applythe black testlead to COM terminal and thered one to V
8. itoris crept badly orbroken LCD displaysa value andit s unstable 4 Release the capacitor completely before measuring 4 8 TRANSISTOR hFE 1 Set the knob to hFErange Inset thetest leads to COM and mA Note COM terminal is forpositive pole mA terminalis OQ 2 Verify the transistor under tested is NPN or PNP insert emitter base and collectorto proper jack 4 9 Diode and Continuity Test 1 Applythe black testlead to COM terminal and thered one to V Q terminal the polarity of red leadis 2 Set the knob to range connect testleads with the diode under tested thered test connectto diode positive polarity the reading is theapprox value ofdiode forward voltdrop 3 Applytest leads totwo points oftested circuit ifthe inner buzzer sounds the resistanceis less than 70 20 Q 4 10 Hot WireTest 1 Pull outthe black testlead from COM jack and setthe red one to V Q jack 2 Set theknob to TESTrange and setthe red testlead to the tested circuit 3 If LCD displays 1 and the lightand sound alarming it means the circuit ofthe red testlead tested ishot wire ifthere is noany response it meansit is neutral wire NOTE 1 The function is only for testing AC standard live wire AC 110V AC 380V 2 Be careful to operate at thisrange 4 11 DataHold Press the Holdswitch the measured value is heldon LCD pressit again and the function is c
9. t or temperature input MlReplace fuse Big error Value WM Replace battery The specifications aresubject to change without notice The content ofthis manual isregarded as correct error or omits Pls contact with factory We herebywill not beresponsible for theaccident and damage caused byimproper operation The function stated for this User Manual cannot bethe Reason of special usage MB 0088 11
10. t the circuit affect the accuracyor damage the meter while measuring at the rangeof 20A becausethere is noprotection 4 6 Resistance Measurement 1 Apply the black lestlead to COM terminal and thered one to V Q terminal 2 Set theknob to aproper resistance range and connect the leads crossly with theresistor under tested NOTE 1 The LCD displays 1 while the resistanceis over the selected range Theknob should beadjusted to ahigher range When measuring value is over 1M Q the reading will take afew seconds tobe stable It s normal for high resistance measuring 2 When inputterminal is inopen circuit overload displays 3 When measuringin line resistor be sure thatthe power is off and all capacitors are releasedcompletely 4 Do notinput any voltageat resistance range 4 7 Capacitance Measurement 1 Applythe knob to proper capacitance range and insert the measuring accessories ortest leads into COM and mA terminal Note COM terminal is forpositive pole mA terminalis 2 Connect testleads with thetwo points ofcapacitor be waryof polarity if necessary NOTE 1 If the capacitance under testedis over the max value of selected range LCDdisplays 1 thus shouldset the knob to ahigher range 2 It s normal that there isa remained valueon LCD before capacitance measurement andit doesn t affectthe measurement 3 When measuringat large capacitancerange if capac
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