Sony PVM-2530 Service Manual page 58

Trinitron color video monitor
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PVM-2530
RM-739
CMPTR
connector(25-pin)
Pin assignment
Pin No.
Signal
1
*
IBM select
2
Audio select
3
H. sync or composite sync
4
Blue input
5
Green input
6
Red
input
7
No connection
8
9*
Analog/digital
mode select
10
RGB/NORMAL mode select
11
V-sync
12
Blanking
13
Audio input
14
No connection
15-24
Ground
25*
IBM luminance signal
0
* Examples for microcomputer
connections
::s\
1
9
r
Analog signal
-
High state
IBM computer
High state
Low state
TIL 3BIT
Low state
Low state
computer
2
3
4
5
6
8
9
10
11
1~
13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
O
14
15
16
17
Hl
19
20
21
22
23
?J
25
Signal level
High state (5
V):
IBM mode
Low
state: 3 Bit TIL
0
High state (5 V or open): Audio inputs from pin 13.
Low state (less than 0.4 V): Audio inputs from the LINE A/LINE B AUDIO IN jacks or VTR
connector
Negative polarity
When the high state
is
selected at pin 9:
1 Vp-p, 75-ohm terminated
When the low state is selected at pin 9:
TIL level
Positive
polarity
When
the
high state is selected at pin 9:
Analog signal (0.7 Vp-p, 75-ohm terminated, non
sync
1 Vp-p, 75-ohm terminated, with sync on G-signal)
When the
low
state is selected at pin 9:
Digital signal (TIL level)
-
High state (open): Analog signal (0.7 Vp-p)
Low
state
(ground):
Digital signal (TIL level)
High state (5 V or open): RGB inputs from a
microcomputer
Low state (ground): Composite video inputs from the LINE A/LINE B VIDEO IN
or
VTR
connector
·-
Negative polarity
TIL level
High state (5 V or open): Video
inputs
from a microcomputer
only
Low state (ground): Composite video input from the LINE A/LINE B VIDEO IN
or VTR
connector
During the low state, the video signal from the microcomputer
is blanked
and
the
composite video signal from the LINE A/LINE B VIDEO IN
or
VTR
connector
is
superimposed over the
signal
from the microcomputer.
Input level
-5
dB
(100%
modulation),
input
impedance more than 47
k ohms
----
-----
-
·---
-
--
-
----·-----
-
---
·---
-
-
·--
.
-
..
---
--
-----
----
-
-
--
----
----------
- -------
-
Positive polarity
When the high state
is selected at pin
1: TIL level
-
-
---
1
When the
low state is selected at pin
1:
Low state (ground)
25
-
IBM luminance
signal
Low state
--
- -
-
--
---
--
While the
information given is
true
at
the time
of printing
.
small
production
changes in the course of our company"s policy of
improvement through
research and design might
not
necessarily
be
indicated
in the
specifications
.
We
would ask you to check
with
your appointed Sony
dealer
if clarification
on any point is
required.
Design
and specificati
on
s subJect
to
change without notice
.
-
2
-

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