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Motorola R-20018 Manual page 135

Communications system analyzer

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P1

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3-10

27, 28

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15, 22

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67, 68

65, 66

63. 64

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AF ADD BUS 0-3

AF BUS EN1

AF DATA BUS 0-3

1 KHz SINE RTN

(0)

EXT MOD RTN

(0)

INT MOD RTN (0)

U3? 34 35

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ADRS

U37. 39-44

DECODE

CONTROL

LATCHES

•

TP6

·~

_r

L

-~

U23, 24

MOO

SEL

sw

•5 VDC

I

U26-30

U14-18

20-BIT

20-BIT

ADDER

LATCH

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104,8576

I

PL

GENERAT~

KHz

CLK GEN

U6.

7

-

-

r

SHIFT

23-BIT

REG

SHIFT

I

CONTROL

REG

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U20, 33

l

U34.36

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-

-

8)7

~2

v

--

IY

--

U11

U3

10Hz-

DECODE

---

0/A

10KHz

i10M

BP FIL

y

Ut U2

,--

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TP2

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-

OPL GLK

--~

TP3

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5-135 Hz

BP

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FIL

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OPL G!_N_!:RATOR

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TP9

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U23

PRGM

PL

ATIEN

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----

J

OPL

VOL CNTL AUDIO

DSBSC MOO

FM MOO

OFFSET MOD

5 VDC +AM MOO

MOD TO FP

MOD CAL AUDIO

TP1

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ll19

P1

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47,

48

51. 52

55, 56

59, 60

61, 62

43. 44

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49.

50

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PL!OPL

INT MOD II!

1

25. 26

SEL

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SYNTH 1 KHz

41. 42

>-ii-___:::;,:,:_::.:_:_;.::_:=_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ..,

U46

1KHz

BP FIL

1--------y_L ___________________________

,_KH_z_S_IN_E__;(I)T(

45

,

46

U45

11. 12

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MIC IN

I

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IDC

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TP7

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y

EXT MOO (1)1

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EXT MOD IN

v

13, 14

23. 24

8521·31

Figure 12-1.

Audio Synthesizer A6 Block Diagram

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