Creative 0404 owner manual SMPTE Modes of Operation, Host Mode, External Mode, Flywheel Modes

6 - Appendix

Sync Daughter Card Supplement

Mode (fps)	Sets the transmitted frame rate when striping SMPTE.
SMPTE Striping	Edit this field to set the start time in hours:minutes:seconds:frames for
	striping SMPTE.
Stripe Button	Initiates SMPTE Time Code generation at the SMPTE output beginning at
	the time set in the striping display.
Stop Button	Stops SMPTE striping. This button also stops SMPTE when One-Time Jam
	Sync has been initiated.
Flywheel Mode	Selects one of the four Flywheel modes. See the descriptions below.
Output Level	Sets the SMPTE output level from -10dBV (consumer) to +4dBu (pro).
FLY/JAM Frames	If flywheel mode is on and a dropout is detected this is the number of fly-
	wheel frames that will be output before the sync card stops and chases.
Word Clock	Turns word clock termination on or off. Except in special cases, this con-
Termination	trol should normally be left on. See “Word Clock In/Out”.
SMPTE/MTC	This control selects the source of the SMPTE output jack. The choices are:
Output Source	Host MTC or the SMPTE Input jack (to regenerate SMPTE).

SMPTE Modes of Operation

Host Mode

The host computer is the source of synchronization. MTC messages are sent to the Sync Daughter Card from the computer application and converted into SMPTE. MTC is also output from the MIDI port on the Sync Daughter Card.

External Mode

SMPTE messages from SMPTE In are converted to MTC (quarter-frame messages) and sent to the host application. This happens automatically whenever LTC is received at the SMPTE input jack. Clean SMPTE data is also transmitted from SMPTE Out if “SMPTE (Regenerate)” is set.

Flywheel Mode

If the incoming SMPTE data is corrupted or missing frames, MTC code will continue to be output if “Flywheel mode” is enabled. The flywheel modes are described below.

Flywheel Modes

Off	Upon any dropout, MTC stops and the Sync card monitors the input for
	valid code. If valid code is again received, it chases and relocks.
Fixed 0-127	Upon any dropout, MTC continues outputting Quarter-frame messages
	at the same rate (flywheeling). When a dropout is detected, this is the
	number of frames that will be output before the Sync card stops output-
	ting MTC and monitors the input for valid code. If valid code is again
	received, it chases and relocks.
Continuous	Upon any dropout, MTC continues outputting Quarter-frame messages
	at the same rate (flywheeling). The Sync card monitors the input for valid
	code and continues flywheeling until valid code is received, then relocks.
1-Time Jam Sync	Upon any dropout, MTC continues outputting Quarter-frame messages
	at the same rate (flywheeling) without monitoring the SMPTE input until
	the Stop button is pressed.

72 Creative Professional