Hameg hm8011-3_4.5_digit_multimeter_sm 电路图.pdf

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1、I 1 I I ! I j J J . 1-1 l=t 11 E I:; Instruments Service Manual HM8011-3 ; RadioFans.CN 收音机爱 好者资料库 I J i C1j) 00 00 00 cv 00 (!J J for current measurements mA switch for resistance measure- for toItage measurements Cl) V/kO (shock-proof socket forconnectors of 4mm diameter) Connection (high JXtentia

2、l) tor voltage and resistarice measurements in combination with the COMMON input . CAUTlON I TIte wob 8CIO thls t8nnlnsl wlth respect to cae (non-lu8ed Hrthed conductor, ground) should not 8xceed 1000 V to ensure .lety oloper8tion. DC/AC(pushbUtton) Fion selection between DCand AC rem.eftta. cxJ ) )

3、 (pushbutton) Swich tor disoonnecting the acoustic signal. The buzzer beeps with every mange cf the measurement ringe. when overtoed oocurs. arKj if the display is zero in the resist8nCe range. RANGE (6-position rotary switch) The range switch permits to adjust the measurement ranges within the sele

4、cted functions. When voltages and currents of unknown magnitude are measured, flr8tiy HIect hlgh- meaul8m8nf ,.1 Then set the switch to the next range in order, until optimum resolution is obtained. 2OA (shock-proot socket tor connectors of 4 mm diameter) Terminal (high poential) tor AC and DC curre

5、nt meas- urements in the 20A range in combination with the common input . Tlte/nput not tu. prot8Cted. At CUnwn18 whIch exceed DA the maximum mlss/. bI. m.rlng time i. 3D SSC. Measurlng tim. exceeding 30 sec. an use th.nnal damage 0 the Intern. resistors. RadioFans.CN 收音机爱 好者资料库 selection selection

6、J j J COMMON dlfference The mean vafue of the input YOItage end C voItages 8f8 detennined by the tlUe rms value. When measuring AC YOltages. a DC component is suppressed. If possibfe. the COMMON terminal should be connected directly to ground or to the test circuit point carrying the Iowest potentia

7、l to ground. During rneasurements of circuits containing inductive components. inadmissibfy high voltages may occur. when the test circuit is ope In this c8se. appropriate precautions should be taken to prevent destruction of the HM8011-3 module by induced voItages. Current m.su.nts For current meas

8、urements, the device to be tested is connected to the mA socket (!) or the 20A socket . The HMBO11.J module .hould be ln88lted Info the line whlch canie8 the 1oW8St iGt6. to ground. To ensu18 Ntety 0 OperBtlon, the VOItage fo gmund aCIoa the COMMON terminal 8hou1d not excHd Vp AC currents are determ

9、ined bytheirtrue rms value (see Crest factor). When measuring AC currents. a DC component is suppressed. The current measurement ranges are microfuse-pro- tected from overload condition (2000mA range: up to 2A; lower ranges: up to 200mA). The 20A input is not fuse protected. If a fuse has bfOwn. fir

10、stly eliminate the overload cause. Then re-establish the operating condi- tion of the HM8011-3 multimeter. At cu.,.,. whIch exceed 1DA the mu. adm meaurlng time ,. JO.-. Reslstance mN.ur.menu For resistance measurements, the device to be tested is inserted between the COMMON terminal end the V,Ikg s

11、ocket (7).A DC vottage is appied aCfOSS the con- necting terminals (see specifications on page 7). There- fore only devices which are not under voItage should be measured. because any voItage present in the test cir- cuit wifl give an erroneous result. If very .sma41 resistalqS are rfeasured; the fi

12、ne resis- tance of the connecting leeds must be taken into consid- eration. tVhen the resistarx:e measurement inputs are shor- tened (approx. 0 Q) the buzzer beeps continuously. to Overload protection All measurement ranges of the HM8011-3 multimeter are protected against different types of overload

13、 condi- tions. General procedure: WhenmHSuringunknown m.gnitudes, firstiy select the highftt m.urernent rsnge, Ware switching over to the optimum rud- out rsnge. If. failure 0 the HM8011-3 module I. detected, firstiy e/imin.te the silure u.e, befo,. performlng sny further m.urement. Fuse repiacement

14、: 11 overload occured in a current measurement range. one of the two micro1uses must be replaced before re-starting operation of the HM 8011. 3 module. For this purpose. the set must be opened. the fuses being only 8CCe$sibJe from the inside. In anycase. only fuses of the specified type shall be use

15、d to avoid damaging of the HM 8011-3 muttimeter and to ensure continuity 01 specifiC$tion in the current measurement ranges. ct.88 - RadioFans.CN 收音机爱 好者资料库 j J J j j J J J j J j J - CF - ffii . R 0 period dration pulse duration pulse voltage j t8)1es. the conc HM 8011-3 measurement ranges must be r

16、e-el. However. a re-aljgnment should only be performedr if a calibrator ofadequste accuracy is 8v8i. In 811 measuremem ranges. the HM 8011-3 test modes must be check by comperison with the values specified in the IfofIowing tables. However. before changing the mellUrement r 1. t5 , 1 . t 1 1- 1 1 1

17、1 1 1 1 2% 1% 1% 1% 0.1% 0.1 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1S t.-. 1. 1. , . % % % % % g Q g Q t , 1 1 464 100 464 100 Electronic Parts List ile Descriptton TL81 ICl80691.2V lF356 AD536 JCl7660 ICl7135 Tl 82 I Cl 8089 NE555 79l05 78L05 4081 4093 01 02 m 04 0.1 27 100 82 2.2 68 24.4 10 10 22

18、 6.8 22 22 10 2.2 10 2.2 2.2 10 0.1 0.1 6.8 6.8 0.22 0.22 10 10 0.33 1 1 10 220 22 47 10 10 10 ,V 1CKMV 83V 831 1S)I 831 831 630V 36V 63V 4OOV 401 401 36V 63V 36V 63V 63V 630V 250V 2501 400V 4001 100V 100V 630V 361 1I 1001 1001 35V 1601 631 25V 351 35V 351 2 6- 20% 10% 2.5- 10 1% 20% pF pF pF nF pF

19、nF nF F nF pF i,1F F F F l1f F nF F F pF pF i,1F nF F F F F pF nF F F F F 2W 2W 107 C8 09 10 11 12 13 20% 5% 4511K: 201 = 7806 7812 78122 20% 20% 6% 6% 20- 20% 20% 2N2219 BC567 J112 BC237 8C239C 01 02-104 05-106 07-111 092.5 2K 2.K BC 567 1 kQ Iin. 20% 2.5kQ n. 20% 500 glin. 20- 100kQ In. 2K 470 g!i

20、n. 20- 1 kQ lin. 20% 4.7 kQ lin. 20%- 2-22pF 2-22pF 2-22pF C 201- 100 IAF C 301 1 000 IAF C 302 10j4F C 303 22nF C 304 1 000 j4F C 305 10j4F C 306 22 nF C 307 1000j4F C 308 10jAF C309 22nF C 310 0.01j4F C 311 10jAF C 312 10jAF C 313 10jAF 0101 0102-0113 D 114 0116 0.,8 Ot17 0118 0119 0120- 0123 0126

21、 18VV 26V 36V 83V 26V V 83V 26V V 83V 3kV .V .V .V VC 101 VC 102 VC 10320% 20% 20% V 5.6V O.2A 2A VI 101-104 VZ106 1/4W F 101 F 102 8250 C15008R 101 iR1 R2 R303 1 B260C1600 8260 C1600 8260C1600 Tr8fo 2x12.6V EM513 1 N4149 FDH 300 FDH 300 1 N4149 1 N4149 1 N4149 F DH 3(X) 1 N4149 EM513 . . J I QJ C Q

22、) ,- co . 0 I -1- 2 c( . = G U U f G C 0 U , G u C G . ;. I i, . N . I A. III i I 1 J . 8flI. . I. v . .1 81 , - t. I 8 . 1I I ! I.11 e,.s 8 II i. !I 1I iJ il ! 1 !, M11-11-3 . c 0 U I (.) 0 CI) C . c Q) Q) C J . Q) C C m Q) , t: Q) :e Q) =: w ., dt898 notice, And8n.1g8n Sous r68erve Oe , R.-,.-=.; d8 ;-:-lc-:-;o . 1