D A T A S I G N A L S E X A M P L E S; B I O C K D I A G R A M O F D I G I T A L S E C T I O; P I N N I N G O; D I S M A N T L I N G T H E P L V - Philips PM2517E Service Manual

46
3.4.3.3. Truth table of the oa 0055
Function
B l a n k
l p o s . ,
t n e g . ,
O u t p u t s
D i s p l a y
r e a d r n g
B l a n k i n g
+ 999.9 mV
+ 9.999 V
+ 99.99 V
+ 999.9 V
- 999.9 mV
- 9 . 9 9 9 V
- 9 9 . 9 9 V
- 9 9 9 . 9 V
o
999.9 fl
9.999 kQ
99.99 kQ
999.9 kQ
9.999 t\4Q
- 9 9 9 . 9 m V
- 9 . 9 9 9 V
- 99.99 V
- 999.9 V
lpos.,
I neg.,
+ 9 9 . 9 9 m A
+ 9.999 A
- 9 9 . 9 9 m A
-9.999 A
i 999.9
-999.9
I
+ o a
L o g i c 1 = 0 V v
L o g i c 0 = - 8 . 5 V
Logic X = irrelevant
- For a liquid crystal display, signal DS2 is a square wave
- F o r a c o m m o n c a t h o d e L E D d i s p l a y s i g n a l D C L i s L o g i c 0
- For a common anode LED display signal DCL is Logic 1
In function |
, the mV indication is suppressed by a switch in the Pl\4 2517E.
In function V- and mA- the -indication is not used in the Pl\4 2517E.
0 0 0 0 0 0
0 0 0 1 1 0 0
0 0 0 0 0 0 0 0 0 1 0 r 0
0
0 0 1 0 1 x x
I
0
0 0 r 0 l x x
0
O F c \ c Y )
E ) { C E . . : z
o o Ö o
o c o <
9
< . o o o z z z
o
0 0 0 0 0 0
0 0 0 0
0 0 0
X
O O O X X X X
X
1 1 0 0 0 0
0 0 0 1
1 0 0
0 1 0 0 0 0
0 ' l 0 0
1 0 0
0 1 0 0 0 0
0 0 1 0
1 0 0
0 1 0 0 0 0
0 0 0 1
1 0 0
0 1 0 0 0
0 0 0
1
0 1 0 0 0
0 0 1
1
0 1 0 0 0
0 1 0
1
0 1 0 0 0
0 1 1
1
1 1 0 0 0 0 0 0 0 1
0 1 0
0 1 0 0 0 0 0 l 0 0
0 1 0
0 1 0 0 0 0 0 0 1 0
0 1 0
0 1 0 0 0 0
0 0 0 1 0 1 0
0 1 0 0 0 0 0 0
0
0 1 0 0 0
0 0 1
0
0 1 0 0 0 0 ' t 0
0
0 1 0 0 0 0 1 1 0
0 0 0 1 0 0
0 0 0 1
0 0 0
0 0 0 1 0 1 0 1 0 0
0 0 0
0 0 0 1 0 1
0 0 1 0 0 0 0
0 0 0 1 0 1
0 0 0 1 0 0 0
0 0 0 1 1 0 0 1 0 0 0 0 0
0 0 1 0 0 1 1 1
x
0 0 1 0 0
0 0 0
x
0 0 1 0 0
0 0 1
x
0 0 1 0 0 0 1 0
x
0 0 1 0 0 J l l
x
l ' t 0 0 0 0 0 0 0 1
0 0 ' l
0 1 0 0 0 0 0 1 0 0 0 0 1
0 l 0 0 0 0
0 0 1 0
0 0 1
0 1 0 0 0 0 0 0 0 r
0 0 1
0 1 1 0 0 0 0 0
x
0 l t 0 0 0 0 1 x
0
1 1 0 0 0 r 0 x
0 1 1 0 0 0 1 1 x
1 0 1 0 0 0 0 0 1 0
1 0 0
0 0 ' t 0 0 0 0 1 0 0
1 0 0
0 1 0 1 0 0 0 1 1
0 1 0 1 1 0 1 1
' 1
0 0 1 0
0 1 0
0 0 1 0 0 0 0 1 0 0
0 1 0
0 1 0 1 ' 1 0 1 1
0
0 0 0 0 1 0 0 0 r
0 0 1 0 0 0 0 1 0 0 0 0 1
0
1 1 1 1
0 1 1 X
1 1 0 0 0 0 0 0 0 1 1 0 0
0
0 1 ' l 0 1 x x
1