HP Car 3490A 5'8, 3Yä1.^.dP, l8'd',tshäl, Figure7-24. SchematicDiagram,Main Logic, Al

L S H C

( H A Z D )

A N A L O GZ E R OD E T E C T F R O MU 2 0 3( 7 )

T R A N S F E RA N D Z E R O D E T E C T

+ 5 V

u t 8

-

A N D O R

I N V E R TG A T E

I I M E C O U N T3 2 ( H T C 3 2 )

( H T F E

)

TANSFERENABLEH

F R O MU 9 ( 2 I )( L T X F ) rnarusrERL 6 ro u?,4

( H Z D T )

ZEROOETECTH T Ou t 9 f l )

I N P U T

P O L A RIT Y

STORAGE

O U A L IF I E R

H M Q C iöi,liisliä)31,"qE N A B L E S I G N A L S

( H T C 3 2 )

T I M E C O U N T3 2

(L C O V )

C L O C KO V E R L O A DL F R O MU I 6 ( 9 )

3 , 9 ,t 2 )

r c R 2 0

5'8l8'd',tshäl'"

3

^ r

3Yä1.^.dP

A L L I C ' sV l € W E DF R O M T O p

i

_	l
* " " ^ ; '

Figure7-24.SchematicDiagram,Main Logic, Al.

7471.748