HP 54501A Service Manual page 64

HP 54501A SERVICE
W8 / 5
Wl
15V(A)*-
+12V(A)
12V(D)
5 .15V(A)-
+5 .15V(D)-
3 .5V(A)-
-5 .2V(A)-
-12V(A)
ANAGND(A)-
DGTLGND(D)-
FANGND(A)-
DSPLYGND(D)
W6
SYSTEM HSYNC
BOARD
VSYNC
ASSEMBLY
HBRGHT
J950 FBRGHT
5V(D)
r
+lzv(D)
DGTLGND
DSPLYGN
J13
Figure 6-1 . HP 54501A Simplified Block Diagram
Intensity
T
W7 / 3
* A and D represent analog CHI
and digital voltages from
** Dashed line indicates
the power supply . Analog
rear panel location .
voltages are routed mainly
to data acquisition section
of the system board .
r
W5 KEYPAD
J1 J951
AND
I L
20 RPG
r _____,
r
W4 HP-IB
J952
/--~ Connector
L
24
System Control
L _ _ _ _ _ J
r _____,
Data r
W3 DC
Acquisition
J4
/-~ Calibrators
L
2
Output
L _ _ _ _ _ J
r _____ l
r
W2 AC
J3
/--~ Calibrators
L
2 Output
J12 J11 J10
CH2 CH,
CH4