Sony BRC-300 Service Manual page 87

Chroma Output, Cr, Cb Level Adjustment
Mode Camera
Subject Arbitrary
Measurement point DD-208 board, pin 8 of CN151
(75 Z terminated)
External trigger: Pin 6 of CN151
Measuring instrument Oscilloscope
Adjustment page C
Adjustment addresses 26, 27
Specifications Cr level:
Cb level:
Burst level: C = 286 ± 6 mV (NTSC)
Adjusting procedure
Order Page Address Data Procedure
1 0 01 01
2 3 0C 02
3 C 26
4 C 26
5 C 27
6 C 27
7
8 3 0C 00
9 0 01 00
0.28 us (NTSC)
0.23 us (PAL)
BRC-300/300P
BRU-300/300P
A = 714 ± 14 mV (NTSC)
A = 700 ± 14 mV (PAL)
B = 714 ± 14 mV (NTSC)
B = 700 ± 14 mV (PAL)
C = 300 ± 6 mV (PAL)
Set the data.
Set the data, and press
PAUSE button.
Change the data to satisfy the
specification A.
Press PAUSE button.
Change the data to satisfy the
specification B.
Press PAUSE button.
Check that the specification C is
satisfied.
Set the data, and press
PAUSE button.
Set the data.
H
A B
0.28 us (NTSC)
0.23 us (PAL)
Video Output Level Check
Mode
Subject
Measurement point
Measuring instrument Oscilloscope
Specifications
Checking procedure
Order Page Address Data Procedure
1 3
2
3
4 3
A
C
3-2. BRC-300/300P Camera Block Electrical Alignment
Camera
Arbitrary
DD-208 board, pin 4 of CN151
(75 Z terminated)
Sync level: A = 286 ± 18 mV (NTSC)
A = 300 ± 18 mV (PAL)
Burst level: B = 286 ± 18 mV (NTSC)
B = 300 ± 18m V (PAL)
0C 02 Set the data, and press
PAUSE button.
Check that the specification A is
satisfied.
Check that the specification B is
satisfied.
0C 00 Set the data, and press
PAUSE button.
H
B
3-21