Sony HKDV-501A Playing Back Non-audio Data, Output of Pull Down Signal, To exit DMC playback mode

5-4 Playback

To stop the tape during DMC playback

Press the STOP button.

To exit DMC playback mode

Press the ALT/[F7] (DMC) button in HOME menu to go off DMC on the display.

During DMC playback, the tape runs as shown in the diagram below.

	Preroll time ⋅		Speed variation
	initial speed	IN point	end point
	$	$	$
	Press the PREVIEW button.
Chapter5
Recording/Playback	Tape runs at	Playback mode	Playback at
	initial speed	using the	normal speed
		memorized speed
		DMC playback

5-4-5 Playing Back Non-audio Data

Non-audio data recorded on a tape is detected automatically and played back.

Note

When non-audio data is being played back:

•The “OVER” indication on the audio level meters flashes.

•Analog audio output to the main line, monitor, and the headphones are muted.

•The playback level cannot be adjusted using the PB audio output level controls.

5-4-6 Output of Pull Down Signal

The explanation of pull down signal output for playback is given below.

Time code multiplexed to pull down signal output

•The value of the time code multiplexed to pull down HD SDI output signal is determined by the time code preset using the PDPSET MENU in the TC menu and converted into 30-frame time code.

Note

LTC output of this unit is always 24-frame time code which is output from the main output line of this unit.

•When this unit is operated in 24F mode, time code data of the user’s bits area is not included in the pull down signal output. The time code value before conversion (24F mode) and sequence information of conversion contained in user’s bits data are multiplexed to the HD SDI output signal. The following four bits are used for the sequence information to display 0 to 9 repeatedly.

MSB: The first bit of the tens digit of the hour The second bit of the tens digit of the hour The first bit of the tens digit of the minute

LSB: The first bit of the tens digit of the second When the sequence information is masked, the remaining contents of user’s bits data are the same as the time code value before conversion (24F mode).

Note

Since user’s bits data multiplexed to the down- converted output signal are updated frame by frame, 24-frame time code and sequence information of the down-converted output signal differs from those multiplexed to the HD output signal.

Time code area	User’s bits area (HD)
30F TC	24F TC + sequence information
00:00:00:00	00:00:00:00	A frame
00:00:00:0100:00:00:00 *	00:80:00:0100:00:80:00
00:00:00:0200:00:00:01 *	40:00:00:0100:80:80:01
			Cycle of
00:00:00:0300:00:00:02 *	40:80:00:0240:00:80:02		conversion
00:00:00:0400:00:00:03 *	80:00:00:0340:80:80:03
00:00:00:0500:00:00:04 *	00:00:00:0480:00:80:03	A frame
00:00:00:05 *	00:00:80:04

5-16Chapter 5 Recording/Playback