JVC GY-HD250, GY-HD251 manual Presetting and Recording of Time Code, Setting, Drop, Non

e_hd250.book Page 44 Tuesday, October 24, 2006 3:11 PM

PREPARATIONS FOR OPERATION

Presetting and Recording of Time Code

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”.

There are two ways to preset the time code.

•Set from the TC/UB/CLOCK menu screen.

•Set in the LCD screen without opening the menu screen. This section explains how to set from the TC/UB/CLOCK menu screen.

* See page 46 for instructions of setting from the LCD screen.

Menu and switch settings to set the time code preset are the same as the settings below.

Setting

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.

„Set the TCG SOURCE item in the TC/UB/CLOCK menu screen to INTERNAL.

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

Use the DROP FRAME 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.

TC/UB/CLOCK menu screen

(FRAME RATE: 60/30)

Framing mode:

Drop frame/

Non-drop setting

MEMO

Drop frame/Non-drop frame mode

In the NTSC system, the actual number of frames per 1 second is approximately 29.97 frames, but per time code 30 frames are processed. To compensate for this differ- ence, 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.

TC/UB/CLOCK menu screen

(FRAME RATE: 50/25)

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