No. 51878
AV21BT7ENS / AV21BT7ENB
AV21BT7EPS / AV21BT7EPB
AV21BT7EES / AV21BT7EEB
13
Item
Measuring
instruments
Test point
Adjustment part
Description
Adjust 06
[ Y-Delay PAL ]
1. Receive
a
PAL
colour bar signal.
2. Select
<Adjust 06>
from SERVICE MENU.
3. Adjust
Y-Delay PAL
till the colour transients on the colour
bar of the pattern become as sharper and colours between
transients do not mix with each other as possible.
Note: If the SAW filter is one of the G1965M, J1951M, K2958M,
K2962M, G3957M, K6256K, K6259K or M1963M, there is
constant group delay distortion, so for an equal delay of
the luminance and chrominance signal the delay must be
set at a value of 160nS. This means the adjustment must
be set to the maximum value.
Adjust 07
[ Y-Delay SECAM ]
1. Receive
a
SECAM
colour bar signal.
2. Select
<Adjust 07>
from SERVICE MENU.
3. Adjust
Y-Delay
SECAM
till the colour transients on the
colour bar of the pattern become as sharper and colours
between transients do not mix with each other as possible.
Note: If the SAW filter is one of the G1965M, K2958M,
K2962M, G3957M, K6256K or K6259K, there is constant
group delay distortion, so for an equal delay of the
luminance and chrominance signal the delay must be
set at a value of 160nS. This means the adjustment must
be set to the maximum value.
LUMINANCE
DELAY
Adjustment
Signal
generator
Adjust 08
[ Y-Delay NTSC ]
1. Receive
a
NTSC
colour bar signal.
2. Select
<Adjust 08>
from SERVICE MENU.
3. Adjust
Y-Delay
NTSC
till the colour transients on the colour
bar of the pattern become as sharper and colours between
transients do not mix with each other as possible.
Note: If the SAW filter is M1963M, there is constant group delay
distortion, so for an equal delay of the luminance and
chrominance signal the delay must be set at a value of
160nS. This means the adjustment must be set to the
maximum value.
