Sony 6-2Advanced Automatic Editing, 6-2-4Performing Preread Editing

6-2 Advanced Automatic Editing

Editing 6 Chapter

6-2-4 Performing Preread Editing

Video and digital audio signals already recorded on the tape can be used as an edit source for insert editing. This type of editing is called preread editing, as the VTR uses preread heads to read signals in advance. Signals that are read in advance can be sent to mixers for mixing, then recorded to the original channels or other digital audio channels.

The preread editing settings are performed with the [F1] (PRE READ) button in the HOME menu.

For details on the settings, refer to “4-2-1 Setting the Preread Function (PRE READ)” on page 4-14.

Video

source

		Digital or
	Digital or analog video input	analog
Video		video
switcher		output

Audio	Digital or
mixer
	analog
	audio
	input	Digital or
		analog
		audio
		output

Audio

source

Preread editing

Notes

•In preread editing, if an input video signal is used as the reference signal for the output video signal, oscillation may occur because of loop-closing. To avoid this, select the external reference signal for preread editing by setting the item 309. SERVO REFERENCE SELECT in the VTR SETUP menu to ext.

•When preread mode is selected, shifting of the VTR to E-E mode is disabled in all operation modes to prevent oscillation caused by loop-closing. If preread mode is deselected while a loop between the input and output of the same channel exists, E-E signals are output and oscillation occurs. To prevent oscillation, do the procedure below to select PB mode for both the video and digital audio channels before the start of preread editing.

1 Press the ALT button, then press the [F2] (PB/EE) button in HOME menu to select PB.

2 Press the ALT button again, and press the [F1] (PRE READ) button repeatedly while holding down the SFT button to select video, audio or a/v.

3 Make the required connections for preread editing.

4 Perform preread editing after selecting the insert editing mode.

5 After preread editing, undo all the connections used for the preread editing.

6 Press the [F1] (PRE READ) button while holding down the SFT button to select off.

7 Check that no loop connections remain.

6-18Chapter 6 Editing