Motorola R-2001A Service Manual page 189

DIV
... . . .
~ ~~
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SCAN UP 5 MHz/S
SCAN UP 5-500 KHz/ S
SCAN UP 500 Hz/S
SCAN ON 5 MHz/ S
SCAN ON 5-500 KHz/S
. !
SCAN ON 500 Hz/S
56-61
40
41-43
44
33
35. 37. 38
39
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7-19. 21
48
72
74
R F ATTEN 0-l l:J DB
SENS MDN
CSSG C DNT EN
' CSSG BURST EN
MON1GEN ,
WB/ NB
73
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IMAGE HII LO
~
0.01V-10V/ O IV RNG SEL
25-28
30
32
29
55
62·65
70
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IF O LVD
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SIG PRES
' IN PROT ACT
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EXT HORIZ SEL
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AF ADRS BUS 0·3
/ AF BUS EN 2
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AF DATA BUS 0-3
66-69
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1
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PAl ENCDR
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U12-15
INPUT BUFFERS
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ADRS
DECO D E
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EXT IN
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1 2 1
I
AC / DC
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I
I
I
l
INT SCOPE TO RNG SW
6
1
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VERT POS
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, ,1 VERT GAIN RTN
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HORIZ IN
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Ul-4. 6-8
4·1 6/3-8
LATCHES
DECODERS
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U9
ATTEN
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R39·44. KS-8.
07. 14
TP1
RANGE
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DVM
ATTEN
BUFFER
r
DISPLAY LED'S
FUNCTIO N LED'S
MODULA TIDN LED'S
U25
DVM FROM RNG SW
U24. 01 5
EXT FREO CNTR
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5-86
,].92
93-98
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22
34
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CNTR
EXT FREO CNTR PREAMP
/
'
38
08·1 1
SCOPE
VERT FRO M RNG SW (0.5V /C M)
/ .
VERT
PREAMP
'
20
U27
SCOPE
HORIZ TO SCO PE AMPL (0.5V / CM)
/
HO RIZ
'
50
PREAMP
''" 20
Figure 18-1. Front Panel Interface Module A12
Block Diagram