JVC BR-D95U specifications Adjustment

12 EDITING SYSTEM PHASE ADJUSTMENT

12-2 ADJUSTMENT

Adjustment outline for each item

●Video level/setup level/chroma level/chroma phase

Use menu switch No. 124 <CHROMA ROTE> to specify whether the chroma phase reference signal is a composite signal or component signal.

1.Play back a cassette tape with standard color signals recorded on it. Do not use the built-in color bar signal for adjustment.

2.Adjust the knobs so that the displays on the waveform monitor (WFM) and the vectorscope (VSC) appear as illustrated below.

Waveforms on the WFM (NTSC signal)	Waveforms on the VSC (NTSC signal)
	R
	MG

12 EDITING SYSTEM PHASE ADJUSTMENT

12-2 ADJUSTMENT

System phase/subcarrier phase/SCH phase The system phase can be varied with the subcarrier-unit step. The relationship between the sync and burst phase does not change. The phase in the subcarrier can be varied. The relationship between the sync and burst phase does not change.

●To adjust the phase with reference to sync phase, follow the system phase adjustment procedure described below.

●To adjust the phase with reference to subcarrier phase, adjust the system phase as described below, then adjust the subcarrier phase.

●To vary sync and burst phase (SCH), adjust it with <SCH PHASE> in the video control menu.

System phase (SYSTEM PHASE) adjustment

System phase adjustment matches the VCR’s blanking phase with the switcher’s correct blanking phase. Switch between the switcher reference signal and the input VCR signal and adjust until there is no change in phase position. Without this adjustment, video distortion occurs after completion of fading during switching.

A:
Video level
			YL	B
		B:	G
		Setup level		CY
	A: Video level
	Adjust to 100 IRE. (NTSC)		C: Chroma level/chroma phase
	Adjust to 0.7 V (PAL)
			Adjust the two knobs so that the lighting point of
	B: Setup level (NTSC only)
			each vector waveform is located within the
	Adjust against deviation.
			mark.
Video (H) phase (VID (H) PHASE) adjustment
The video phase determines where a picture is located with respect to the sync signal. You can adjust this using
the same waveform monitor used for system phase adjustment. Set the WFM reference sync to INT and adjust
while observing blanking until no part of the VCR picture is missing in the rising section.
If you’re not using a waveform monitor, wipe the picture with the switcher reference signal and adjust until the
entire picture can be seen on the monitor.

Waveforms on a waveform monitor

The WFM enlarges in 0.1 µsec.

Genlocking signal (H sync) 50%

50%

Match Player’s video output

(H sync) 50%

50%

(Pay attention to sync fall)

Phase setting for genlocking signal

1.Set the waveform monitor (WFM)’s input to B and synchronize with input B. Set the H sync position with the WFM’s H POSITION volume control to 50% of the H sync level. (Refer to the upper figure on the left.)

Adjustment of Player 1

2.Select Player 1 with the special-effects device (switcher).

3.Play back the reference color bar on Player 1.

4.Set the WFM’s input to A and synchronize with input B. Set the [SYSTEM PHASE] item of Player 1 to the same H sync position as step 1. (Refer to the lower figure on the left.)

Adjustment of Player 2

5.Select Player 2 with the special-effect device (switcher).

6.Repeat steps 3 and 4 to adjust the system phase of Player 2.

•The KM-D600 switcher is self-adjusting. No adjustment is required.

Subcarrier phase (SC PHASE) adjustment

NTSC signal waveforms

Adjustment of Player 1

1. Select Player 1 with the special-effects device

(switcher).

System subcarrier phase adjustment matches the VCR subcarrier with the reference subcarrier of the switcher. Adjust so that the reference subcarrier overlaps the VCR subcarrier.

Player 1

Match

Player 2

2.	Play back the reference color bar on Player 1.
3.	Set the WFM’s input to A and synchronize with
	input A. Adjust the video phase by setting the [VID
	(H) PHASE] item of Player 1 so that none of the
	image is missing. (Refer to the upper figure on the
	left.)

Adjustment of Player 2

4.Select Player 2 with the special-effects device (switcher).

5.With the WFM’s input set to A and input A synchronized, adjust the video phase by setting the [VID (H) PHASE] item of Player 2 in the same way as step 3. (Refer to the lower figure on the left.)

Waveforms on the vector scope (NTSC signal)
Burst signal	R	Burst signal
		R	MG
	MG
YL		YL
	B		B
G	CY	G	CY
Fig. 1		Fig. 2

*● Adjustment of the KM-D600 switcher is not necessary as it is self-adjusting.

●Adjustment of the KM-3000 switcher is not necessary as it is a component switcher.

●Composite switchers other than the KM-D600 must

be adjusted.

Phase setting for genlocking signal

1.Set the vector scope’s input to B and synchronize with input B. Adjust the phase of the burst signal to the reference line with the vector scope (Refer to Fig. 2 on the left.).

Adjustment of Player 1

2.Select Player 1 with the special-effects device (switcher).

3.Play back the reference color bar on Player 1.

4.Set the vector scope’s input to A and synchronize with input B. Adjust the phase of a burst signal to the reference line by setting the [SC PHASE] item of Player 1. (Refer to Fig. 2 on the left.)

Adjustment of Player 2

5.	Select Player 2 with the special-effects device
6.	(switcher).
	Repeat steps 3 and 4 to adjust the subcarrier of
	Player 2.

(WFM: Inside reference sync signal)

120 121