16
RxD
TxD
B5H 31H
0AH 0AH
CMD SPEED DATA
ACK ACK
TxD
RxD
72H
95H
CMD
ACK
Detailed Descriptions of Commands
HEAD HOURS (D2H)
Requests the accumulated time of use of the heads.
When this command is issued, the VTR returns 5 bytes
of data to indicate the time
Example: When the time is 529 hours:
OPERATION HOURS (D3H)
Requests the accumulated powered time of the VTR.
When this command is issued, the VTR returns 5 bytes
of data to indicate the time
Example: When the time is 1852 hours:
ROM VERSION INQ (72H)
Requests the ROM version of the VTR. When this
command is issued, a one-byte code is returned, as
shown below.
7tib 6tib 5tib 4tib 3tib 2tib 1tib 0tib
1
evobaslaremunrebmunnoisreV
.tnioplamicedeht
lamicedehtwolebslaremunrebmunnoisreV
.tniop
Example: When the version number is 1.5:
VCR INQ (FBH)
Checks whether the connected equipment is a VTR or
not. When the connected equipment is a VTR, ACK is
returned. If not, NAK is returned.
RxD
TxD
D2H
30H 30H 35H 32H 39H
CMD
00529
RxD
TxD
D3H
30H 31H 38H 35H 32H
CMD
01852
Tape Run System Commands
PLAY (3AH)
This command sets the VTR to PLAY mode.
F.FWD (ABH)
This command sets the VTR to Fast Forward mode.
REW (ACH)
This command sets the VTR to Rewind mode.
FORWARD SHUTTLE (B5H)
This command sets the VTR to Playback mode at the
specified speed in the forward direction.
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H03LLITS
H13dwF×03/1
H23dwF×01/1
H33dwF×5/1
H43dwF×2/1
H53dwF×1
H63dwF×2
H73dwF×5
H83dwF×61
Example: To play back at 1/30 speed in the forward
direction:
REVERSE SHUTTLE (B6H)
This command sets the VTR to Playback mode at the
specified speed in the reverse direction.
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H03LLITS
H13veR×03/1
H23veR×01/1
H33veR×5/1
H43veR×2/1
H53veR×1
H63veR×2
H73veR×5
H83veR×61
