Sony DTC-690 manual 27

			Sub Codes
		In addition to the ordinary audio signals,
A
		various control codes called sub codes
		can be recorded on the DAT cassette
		tapes to ease recording and reproducing
		operation. Å
	DAT cassette tape	A)The sub codes are recorded.
		B)Audio signals are recorded.
		A desired selection can be called up or
		time information can be displayed using
		the sub codes, for example.
		The sub codes such as start ID, program
		number, skip ID, end ID and absolute time
		are available on this unit.
	A)	•	Sub codes are written on the tape
			separately from the audio signals, so the
			audio signals are not affected.
		•	Sub codes, except the absolute time,
			can be rewritten after the audio signal
			recording has been completed.
			The recorded audio signals are not
			affected by the rewritten sub codes.
	B)	• When you record the tape with sub
			codes written onto a new tape via digital-
			to-digital connection, the sub codes to
			be written on the new tape are following:
		Start IDs		The same as the codes written
				on the original tape.
		Skip IDs		The same as the codes written
				on the original tape.
		Program		New ones will be written
		Numbers		according to the DAT deck you
				use.
		Absolute		New ones will be written.
		time
		End ID		The one written on the original
				tape will not be written.
		When you use analog-to-analog
		connection, no sub codes on the original
		tape will be written onto a new tape. New
		codes will be written according to the DAT
		deck you use.

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