Sony HSR-1/1P User Manual
5
Detailed Descriptions of Commands
NOT TARGET (05H)
Notifies that the VTR could not find the specified
position on the tape when executing the T/D SEARCH
or ALARM SEARCH command.
position on the tape when executing the T/D SEARCH
or ALARM SEARCH command.
CASSETTE OUT (03H)
Notifies that the cassette was ejected.
ALARM IN (06H)
Notifies of alarm input. Each time an alarm is
generated, this command is issued. Which channel is
in alarm status can be confirmed by using the ALARM
SENSE (DAH+C4H) command.
generated, this command is issued. Which channel is
in alarm status can be confirmed by using the ALARM
SENSE (DAH+C4H) command.
Numerical Value Commands
The numerical value commands are used to specify
numerical parameters. These commands are also used
when returning numerical data, such as time data, from
the VTR to the computer. The following four
command formats are supported:
numerical parameters. These commands are also used
when returning numerical data, such as time data, from
the VTR to the computer. The following four
command formats are supported:
Numerical value commands 0 to 9 (30H to
39H)
39H)
To express numerical values 0 to 9 for each command.
Numerical value commands A to F (3AH to
3FH)
3FH)
To express numerical values A to F for each command.
Sign (+) command (A1H) and sign (–)
command (A2H)
command (A2H)
Used to specify the sign of numerical data.
ENTER (40H)
Used to specify completion of numerical parameter
input.
input.
VTR Return Commands
When the VTR receives a command from the
computer, it returns a VTR return command. The
HSR-1/1P supports the following commands.
computer, it returns a VTR return command. The
HSR-1/1P supports the following commands.
ACK (0AH)
ACK is returned when the VTR receives the defined
command correctly. When the command from
computer requests STATUS SENSE or other data,
ACK is not returned, but only data is returned.
command correctly. When the command from
computer requests STATUS SENSE or other data,
ACK is not returned, but only data is returned.
NAK (0BH)
NAK is returned if a command which is not defined
for the current mode (for example, a numerical value
command in a mode other than the numerical input
mode) is received, or when a communication error is
detected.
for the current mode (for example, a numerical value
command in a mode other than the numerical input
mode) is received, or when a communication error is
detected.
COMPLETION (01H)
COMPLETION is returned when the VTR has
completed the operation of the T/D SEARCH or
ALARM SEARCH command. The COMPLETION
command will not be returned if the VTR receives a
tape-run-related command or the C.L. command
before completion of the above commands, because
the VTR stops executing the above commands to
execute a new command.
completed the operation of the T/D SEARCH or
ALARM SEARCH command. The COMPLETION
command will not be returned if the VTR receives a
tape-run-related command or the C.L. command
before completion of the above commands, because
the VTR stops executing the above commands to
execute a new command.
ERROR (02H)
Notifies of generation of an error during operation.
ERROR is returned when a VTR receives a command
that cannot be executed because of an error, such as
tape slack, etc., or when an error has occurred during
execution of the T/D SEARCH or ALARM SEARCH
command, and stopped the operation. Remove the
cause of the error and release the error status using the
C.E. and C.L. commands.
ERROR is returned when a VTR receives a command
that cannot be executed because of an error, such as
tape slack, etc., or when an error has occurred during
execution of the T/D SEARCH or ALARM SEARCH
command, and stopped the operation. Remove the
cause of the error and release the error status using the
C.E. and C.L. commands.