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Содержание YX-360TR

Страница 1: ...Y sanuJa SANWA ELECTRIC INSTRUMENT CO LTD Dempa Bldg Sotokanda2 Chome Chiyoda Ku Tokyo Japan MULTITESTER OPERATOR S MANUAL ...

Страница 2: ...idely from minute current to high voltage Furthermore the input impedancechanges from a few ohms up to high megohm level with the measurementrange cut over These properties of a circuit tester demand the operator to use utmost care in the operation and maintenanceof his instrument to ward him self off danger and damageto the meter Especially when checking high power equipment no operation mistake ...

Страница 3: ...l idea according to your own service desigt contents Generaldescription 2 Features 4 Measurement rangesand performance 6 I As a circuit tester 6 2 As a transistor tester 6 Operation I as a circuit tester 7 I Zero correction of indicator 7 2 Test lead connections 7 3 Selectionof range 7 4 Measurement rangesand scalereading g 5 Difference between voltage and current mdasurements 10 6 Voltage measure...

Страница 4: ...semiconductorslike LED whose forward voltageexceeds 1 5V being unable to read either their forward or backwald resistance In this respect the 1 s volt bat teries lined up in seriesspreadthe measurementrangeof semiconductors One handedoperation control and rational arrangement of ranges All measurementsare controlled by a singleknob Into the bargain the 1000V DC and AC rangeslie adjacent each other...

Страница 5: ...e 3 2 AC voltage ACV Voltagesof commercialAC supply AC powered circuits AF signatlevel erc r aiu Eachof the 4 rangenorations_ 10_rooo the maxi_ mum voltagereadingfor that range 3 3 DC current DCA Current consumption of DC power operatedequip_ 2 As a transistortester Measurement ranges 0 0 I V 0 5v 2 5 V 10V s0V 25gy l 000v 25kV 25kVwith HV probeextra 0 l0v 50v 250V 1000v Frequency l38fi 8 il iii I...

Страница 6: ...voltage and current 0 10 0 50 and 0 250 lineseach reading 0 10V 0 50V and0 250V fs 0 1V 0 5V 2 5Vand1000Vareread multiplied For current G250 A line reads0 0 254 0 25mA and 0 2 5mA 0 50uA is readon 0 50 line 4 ACV red AC voltage Common scale with DCV reads 0 250V 0 50V and0 l0V direct ly For 0 1000V multiply the read ineon 0 l0 line s hrr blue amplihca factor DC tion Extra connector reads 0 1000 on...

Страница 7: ...e measurementby parallel connection In case of Fig 2 A there exists no high impedance correspondingto Re of Fig 3 Power supply sourcehasits own internal resistance but it is so small as can be ignored for voltage measurement and the lossof current consumption by a tester is practically nil the meter reading Ep But as can be noted in Fig 3 the circuit condition changeson account of R4 presentand 20...

Страница 8: ...tal amplifying circuit and similarly the presenceof the input signal on the synchronous detaching and synchronous amplifying cir cuits Resistance measurementand 0O adjustment Resistance measurement is powered by internal bat teries They wear by use resultingin readingerror of the measuredvalue For correct reading of resistance the sensitivityof the indicator must be adjustedaccordingto the voltage...

Страница 9: ...ed circuit of a definite impedance power can be compared by simply expressingthe voltage current ratio by dB The dB scale provided is graduatedto read from OdB to 22d8 on the referenceof OdB at 0 7 75Y which is the voltage when I mW is dissipatedacross600C2 Most frequently the input and output circuit im pedancesof audio amplifiers are not necessarilystand when testing polarized resistance like tr...

Страница 10: ...inaries This instrument usesits resistancerange for transistor tests and so the pointer must be exactly adjustedto zero bgfgge colnecting a transistor fo n usu e_ent tor which the P and N terninalsare shortedtogeiherand the pornter is adjustedby OeADJ 2 Measurementof lcEo leakage currentl 2 l A small sizeTR hereinaftera transistoris referred to as TR is checkedon the Xl0 e l5mA range and a large s...

Страница 11: ...R kinetically measuredalso determines the quality of a TR on a very simple theory As a TR is connected to the tester as shown in Fig 11 there flows I r o A certain resistance R connected across the N terminal and the base of the TR causes the current I to flow Fig I l determined by R For a good TR Icxh n is leri to the collector resulting in so much clrrrcnt increase and higher readingof the meter...

Страница 12: ...V while average testers will fail to check and In very low it by the connectionsof Fig 14 to measureIr it is impossible to have light emitted The 3 volt internal battery layout of the instrument effectively checksit on the Xl range While light is being emitted the LI scale reads the current lr and the LV scale the forward volageVr maintenance 1 Choosinga proper range For increasedaccuracy use the ...

Страница 13: ...l00V misapplied but it can be replaced to restore the instrument to normal per formance Resistors most liable to burn are 9Q R2l for the Xl Q range and lQ Rl2 for 0 254 range Refer to supplementary data at the end of the manual For a high power circuit of more than 200V sparking can causesome abnormality in the tester Be certain to have the meter damaged repaired and undergo regular inspection and...

Страница 14: ...er R YXRIT Resisto 2k 4k0 ACV sensitivitv calibration R X R 8 Res s l r 1k l shunt R Yliit19 R kQ di rde serie R t R 3r Rcsrst 1kf2 obm series R20 YXR2I Res f Ql Q l shunr R 2l R 3 Resistor 200Q S2X10 shurt R YXR23 Resistor 33 3kO Q xlk shunt R 2l YXR2 Resistor l94kA 2 Xl0k series YXR25 Res tor l0kQ 0 2 adjuste R25 Part No Description R S YXR26 Resistbr l6kQ shunt R26 RFOI Recti f ier copper oxide...

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