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RS-232C specifications
Send
ы
я
Receive data returned
Description of operation
Data sent from PC
(OPERATION | Processing status of the VTR.
The
[STX] QOS [ETX]
OGG
(ЕТХ)
VTR sends back the information in the | .
STATHS)
form of a bitmap, as in the table below,
С
ОАТА
which indicates the internal processing
.
АОН$ОН
statuses.
The table 1 information is
Е
DATA
first divided into 4 higher and 4 lower
bits, and this 4-bit data is expressed in
ADRSOL
hexadecimal notation (0, 1, 2 and so
on up to E, F), as shown by the bitmap
B
DATA
example below.
The format in which
ADRS1H
this information
is sent back
is as
3
DATA
follows:
ADRS1
lower data, and so on in this
ADRS2H
sequence.
A
o|
Е
ADRS3H
4
Hexadecimal notation
[3
DATA
ADRS3L
[1] —
DATA
ADRS4H
—— DATA
ADRS4L
TABLE1 INTERNAL PROCESSING DATA
DATA
ADRS 0
DATA
6H: 1
ADRS 1
2H: 0
DATA
REC INHIBIT
|CASSETTE
DATA
ADRS 3
REC INHIBIT TAB : This bit is set to "1" for a tape whose tab has been broken out.
CASSETTE IN
: This bit is set to "1" when the tape is loaded.
VV
: This signifies that the playback screen has been selected.
With a playback picture, the bit
is set to "1."
VTR STATUS
: Refer to the following table.
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