24
PHILIPS LTC3963/51 (E) QR31809
Display character code
The codes with diagonal line are not used.
ASCII code
The codes with diagonal line are not used.
OPERATING THE VCR FROM A PERSONAL COMPUTER
Connect this VCR to a personal computer via the RS-232C interface jacks to remote control the VCR by oper-
ating the computer. You can also display the status of the VCR on the monitor screen to check it.
■
RS-232C Interface Specifications
Communication system:
Full duplex
Communication rate:
1200/2400/4800/9600 BAUD (The rate can be specified using the SELECTION MENU
screen. This is set to 9600 BAUD at the factory.)
Communication format:
Start:
1 bit
Data:
8 bits
Parity:
None
Stop:
1 bit
Communication codes:
Two types, the ASCII and display character codes
■
Communication Protocol
1. Be sure to attach an “SX” code at the start of communications and an “EX” code at the end. The VCR does
not accept the command without these codes.
2. The VCR only transmits a reply to the received command.
3. When the VCR receives one of the remote control commands shown on page 25, it returns the status for
reception acknowledgment or the status requested currently.
4. If the commands are transmitted consecutively or another command is transmitted before the VCR has
ended an operation, the VCR returns the “SX”BUSY”EX” code. Re-transmit the command.
5. If there is a mistake in the received communications format, the VCR returns one of the following commu-
nication error codes.
•
ERL:
Error in code length
•
ERC:
Error in code format
•
ERT:
Error inside the VCR (when return is not possible within about 2 seconds)
6. When the VCR detects a communications error such as a stop bit error, bit length error, etc., it replaces the
received byte with “!” for processing.
∗
If a communications error occurs in the OSD display data, the OSD character is replaced with “!”. If a
communications error occurs in data other than the above, a communications error code is returned.
■
OSD Display Data
When the date and hour are displayed or nothing is
displayed (only the picture is displayed), up to 12
characters are displayed at the position shown in
the figure.
0–
:
2–1999
1
2
3
A00
M
9
0
ON
: 7
2
0
14
Up to 12 characters are
displayed at this position.
0
0
1
2
(blank)
!
3
0
1
2
3
4
5
6
7
8
9
:
<
>
?
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
4
5
P
Q
R
S
T
U
V
W
X
Y
Z
6
7
1
2
3
S
X
E
X
4
5
6
7
8
9
A
B
C
D
✽
,
–
E
F
0
0
1
2
(blank)
“
$
%
&
’
(
)
3
0
1
2
3
4
5
6
7
8
9
:
;
=
?
A
a
q
b
r
c
s
d
t
e
u
f
v
g
w
h
x
i
y
j
k
l
m
n
o
z
B
C
D
E
F
G
H
I
J
K
L
M
N
O
4
5
P
p
Q
R
S
T
U
V
W
X
Y
Z
6
7
1
2
3
4
5
6
7
8
9
A
B
C
D
✽
+
,
–
.
/
E
F
