Fluke 77 Manual do Utilizador descarregar pdf (Página 58)

Schematic Diagrams

5

5-7

0.22

C13

VDD

BT1

9V

1000V,300

CODE

FUNCTION

INT

INT

LOW

HIGH

MA,10A

INT

K0

AZ

K1

AFO

FAO

CONVERTER

FA(-)

AFI

ACLO

ACHI

ACA

B3

B1

B2

B0

+VDD

TEST

-VSS

BPR

XTAL2

XTAL1

ANALOG

PROCESSOR

FILTER*

AC

ACAC

AC*

AC*

AC

MOHMS

3V,300K

30V,30K

300V,3K

SOURCE

VOLTAGE

OHMS

OHMS

DT,OHMSV

X1

X0.3

ACTIVE

FILTER INTEGRATOR

TO

DIGITAL

SECTION

COMPARATOR

BUFFER

D3

D2

D1

D0

C0

NDAV

CLK

C1

C2

C3

EC

OHMS

DE-INT

DE-INT

AP75

U1

47PF

C16

TP1

10

C9

9.20K

R18

32.768KHZ

Y1

47PF

C12

33PF

C15

.027

C6

20.5K

R17

.027

C5

R10

1.50M

R9 1.00M

10

110K

225K

9

8

Z1

.033

C8

1.00MR19

0.47

C7

S1

2.2

C11

S1 S1

LS1

CR1

BAS16

S1

ON

RANGE

20%

63V

PC

63V

PC

PP

0.1W

25V

10V

0.5%

5%

5%

63V

6V

0.5%

5%

58

14

57

4567

49

50

51

52

56

54 55 32488

1716 26 4645443928 2740 47

59

1

60

12

6

4

6

5

6

96

FLUKE 77-3-1001

aaa10f.eps

Figure 5-1. A1 Main PCA (cont)

1 2 ... 53 54 55 56 57 58 59

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