Vcr Status Commands; Other Commands; Return Commands - Sony SVT-RS100 Manual De Instrucciones

VCR Status Commands

When the VCR status commands are entered, the VCR
responds with the information (data) about each
command.
COUNT CODE (D0H)
In response to this command, the VCR returns the
counter value in 6 bytes.
Example: For –1:23:45, 31H, 31H, 32H, 33H, 34H,
35H will be returned.
30H indicates + and 31H indicates –.
RXD D0
TXD 31 31
VCR INQUIRY (FB)
Confirms that the connected equipment is a VCR. The
VCR returns ACK (0A) (only when using RS-232C
connector).
HEAD TIME (D2H)
In response to this command, the VCR returns the
operation time of the video heads in 5 bytes.
Example: For 00333, 30H, 30H, 33H, 33H, 33H will
be returned.
RXD D2
TXD 30 30
POWER TIME (D3H)
In response to this command, the VCR returns the
power on time in 5 bites.
Example: For 00777, 30H, 30H, 37H, 37H, 37H will
be returned.
RXD D3
TXD 30 30
T/L STATUS SENSE (D6H)
In response to this command, the VCR returns its
status in 5 bytes.
(See "T/L STATUS SENSE (D6H) bit allocation" on
page 12 for details.)
32 33 34 35
33 33 33
37 37 37
STATUS SENSE (D7H)
In response to this command, the VCR returns its
operating mode in 6 bytes.
( See "STATUS SENSE (D7H) bit allocation" on page
12 for details.)

Other Commands

ENTER (40H)
Send this command to indicate the end of a numeric
command.
CLEAR (56H)
Clears all the commands.
Clears if an error occurs.
CLEAR ERROR (41H)
Clears the last byte entered of a multiple-byte
command.
Clears if an error occurs.

Return Commands

ACK (0AH)
Acknowledges the command.
NOT TARGET (05H)
Notifies that the tape has come to the end or beginning
without the search/scan point being located, as well as
that the search/scan has been canceled.
COMPLETION (01H)
Notifies that a search/scan point has been located.
Notifies that an alarm picture has been found during
scan.
ERROR (02H)
Indicates an error in the second or following byte of a
multiple-byte command. You cannot send any
command but the VCR returns its status. To clear an
error, send CLEAR ERROR (41H) or CLEAR (56H).
NAK (0BH)
Rejects the command if you send an unknown
command (or a command without any function).
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