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The HDi-250 is designed for control via serial commands via RS-232 or TCP/IP. For convenience is also has front panel pushbuttons.
The BCD HDi-250 uses the "BCD1" Command Protocol, the same as used since 1982 and is in current use with BCD's TC-100, SB-100 and VC-16x controllers. We will update this list from time to time when people have questions. The full command set is listed in the Manual.
RS-232 Pinout: The DB-9 connectors on the HDi-250 is wired as DTE so a straight-through 9-pin cable (M-F) from your computer requires a Null-Modem adapter. The default Baud rate is 19,200 and may be changed and saved under software control.
Commands are 4-characters, terminated by CRLF (Carriage Return Line Feed). The unit then sends a prompt character ">" when it is ready to receive another command.
It is important that your control program wait for the ">" prompt before sending a command.
Some commands may have a numeric parameter.
The MODE and STAT commands do the same thing -- they return the current status of the system. MODE and STAT can take 3-4 seconds to return a value. It is important that your routine wait for the ">" prompt after issuing any command.
STAT is a status query that returns a 4-character reply of system status.
MODE is a status query that returns a number.
Common Commands
RECS means RECord Start. It starts recording.
STAT=RCRD. MODE=16
STOP makes it stop.
STAT=PTHR (pass through) MODE=25
PAUS makes playback or recording PAUSe.
STAT=STFW (step fwd) MODE=1
PLAY makes it play.
STAT=PLAY MODE=10
If the unit is in Pass-Through or Loop-Through mode (video in goes through to video out). PLAY makes it go to the TITLe menu.
If the unit is in PAUSe mode, playback resuumes.
STAT is a query for current transport status.
STAT returns a 4-character message like STOP, PLAY, RECD
MODE is the same as STAT but returns a 2-digit number.
Mode 10 is PLAY. MODE 0 is STOP/PTHR.
FRAM returns the current disc playback position as an integer frame number