3-25 (E)
BKM-21D
3-5-4. D1 H PHASE Adjustment
(BD Board)
n
The following adjustment menu is below the BKM-21D
menu of the MAINTENANCE menu.
CCP-P (CHROMA CLAMP PULSE-POSITION)
1.
Input the D1 white 100% full field signal (525/60) into
the SDI-1 terminal.
2.
Set 06 CH.
3.
Connect the oscilloscope to the following measuring
points.
CH1 : TP201 of the BD board (Y OUT)
CH2 : Pin
20a
of CN2 of the BD board (H
SYNC)
4.
Adjust the CCP-P (CHROMA CLAMP PULSE-
POSITION) data so that the H SYNC position A
satisfies the specification.
5.
Input the D1 white 100% full field signal (625/50) into
the SDI-A terminal.
6.
Adjust the CCP-P data so that the position of the H
SYNC B satisfies the specification.
Fig. 5-6.
Y OUT
(TP 201)
H SYNC
(CN2- 20a )
A
Enlargement
Y OUT
a
b
a = b
c = d
c
d
A or B
Specification A = 2.1
±
0.1
u
sec (525/60)
Specification B = 2.1
±
0.1
u
sec (625/50)
A
Specification A = 3.45 V
±
5 mV
0 V
3-5-5. D2 NTSC A/D Input Level Adjustment
(BD Board)
n
The following adjustment menu is below the BKM-21D
menu of the MAINTENANCE menu.
A D LEVEL
1.
Input the D2 NTSC 100% color bar signal into the
SDI-1 input terminal.
(Full-field 0% set up)
2.
Connect the oscilloscope to TP310 of the BD board.
3.
Adjust the A D LEVEL data so that the A/D input
level A satisfies the specification.
Fig. 5-7.
