JVC GY- HD101 manual Presetting and Recording of Time Code, Drop frame/Non-drop frame mode

PREPARATIONS FOR OPERATION

Recording Time Codes in Continuation of Time Codes Recorded on Tape

The GY-HD100 also incorporates a time code reader. There- fore, when the unit enters record mode from record-standby mode, it can read the time code data recorded on the tape and record time codes in continuation of the existing data. The recorded user’s bit data are identical to the user’s bit data recorded on tape.

*However, approximately ±1-frame variations may occur in scene accuracy.

To enable this function, set the time code related switches as follows before starting recording.

„Setting

Set the TC GENE. switch inside the LCD door to REGEN.

MEMO

The time code framing mode automatically becomes the mode (drop frame or non drop frame) already recorded on the tape.

Presetting and Recording of Time Code

TC/UB/CLOCK menu screen

(FRAME RATE: 60/30)

The time codes from the internal time code generator can be recorded at the time of recording scenes.

•The TC/UB/CLOCK menu screen differs depending on whether the FRAME RATE item on the VIDEO FORMAT menu screen is “60/30” or “50/25”.

Framing mode:

Drop frame/

Non-drop setting

TC/UB/CLOCK menu screen

(FRAME RATE: 50/25)

To preset the Time Code, make the following settings.

„TC GENE. switch Set to REC or FREE.

REC	: The data preset in the time code generator
	runs only during recording.
	Use this setting if it is necessary to record
	continual time codes across different scenes.
	* However, approximately ±1-frame varia-
	tions may occur in scene accuracy.
FREE	: The time code starts to run from the time it is
	preset in the time code generator.

„TC/UB/CLOCK menu screen (FRAME RATE: 60/30)

Use the DROP/NON DROP item to select the framing mode for the time code generator.

DROP	: The time code generator’s running method is
	set the drop frame mode.
	Use this setting when placing emphasis on
	the recording time.
NON	: The time code generator’s running method is
DROP	set to the non drop frame mode.
	Use this setting when placing emphasis on
	the number of frames.

MEMO

Drop frame/Non-drop frame mode

In the NTSC system, the actual number of frames per 1 sec- ond is approximately 29.97 frames, but per time code 30 frames are processed. To compensate for this difference, the mode called “drop mode” drops frame 00 and 01 for every minute not divisible by 10.

The “non-drop frame mode” is when no frames are dropped and the actual time shift neglected.

„TC/UB/CLOCK menu screen (FRAME RATE: 50/25) Whether or not user’s bit data should be recorded can be selected with the UB REC item on the TC/UB/CLOCK menu screen.

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