Adjustment Of Chroma Signal; Write Data - JVC TK-C400E Service Manual

Measuring
No. instrument &
Item
Input signals

2.10 ADJUSTMENT OF CHROMA SIGNAL

1 Color level Oscilloscope
and hue (H-rote, 10:1) or
adjustment W.F.M.
Color bar chart
Red
Yellow
[NTSC]
2 Chroma Oscilloscope
suppress (H-rate, 10:1) or
adjustment W.F.M
Gray scale chart

2.11 WRITE DATA

1 Write data
2-12
Measuring point (*)
Adjustment parts (-)
Mode
Adjustment level (+)
* VIDEO OUT
(75 ohm Termination)
- LENS IRIS
+
U-ver. 0.57 Vp-p (80IRE)
E-ver. 0.56 Vp-p (80%)
- RY GAIN
[CAT: FIELD, Byte: 8]
- RYHUE
[CAT: FIELD, Byte: 10]
- BYGAIN
[CAT: FIELD, Byte: 9]
- BYHUE
[CAT:FIELD, Byte:11]
Red
Yellow
[PAL]
* VIDEO OUT
(75 ohm Termination)
- CSHLV
LENS OPEN
[CAT: FIELD, Byte: 4]
+ Minimum carrier
leakage.
Adjustment procedure
1) Select the "NEXT" button to display "Color
level and Hue" on the title bar.
2) Adjust the lens iris to obtain the specified level
of white part at the measuring point.
3) Adjust the RYGAIN, RYHUE, BYGAIN and
BYHUE with " " and " " buttons to obtain
the specified position at the measuring posi-
tion.
1) Select the "NEXT" button to display "chroma
suppress at high light" on the title bar.
2) Turn the lens iris so that the wevefome of
gray scale is saturated as shown left figure.
3) Adjust the CSHLV with " " and " " but-
tons to minimize carrier leakage on saturated
signal.
1) Select the "NEXT" button to display "Write
data to the EEPROM" on the title bar.
2) Press the "NEXT" button, then message box
are appeared."Are you sure to write EEPROM?"
3) Select the "YES" button to write all data just
adjusted to memory in camera.