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BVP-E30/E30P M-V1
5-9 (E)
5-3. PA-272/273/274 Boards Adjustment
5-3-1. PA Gain Adjustment
n
For the PA gain adjustment, using an 89.9 %-reflective
grayscale chart is preferable.
Before performing adjustment, be sure to set the illumina-
tion of the light source (or the luminous intensity on the
chart surface) and to set the color temperature exactly.
For details, refer to Section 5-1-7. “Maintaining the
Grayscale Chart”.
Equipment :
Oscilloscope
Vectorscope
Object :
Grayscale chart
Board extension : VA-226 board
Preparations
.
Remove the right side panel. (Refer to Section 1-5.)
.
For BVP-E30WS/E30WSP
Remove the DR-536 board. (Refer to Section 2-1-3.)
.
Shoot the fully occupied grayscale chart in the full
underscanned monitor frame adjusting the zoom control.
(2000 lx and 3200 K)
For BVP-E30WS/E30WSP, shoot the chart as follows
according to the chart to be used.
.
Lens Iris
→
F11
.
Menu setting
MENU : OPERATION
PAGE :
PRESET WHITE
ITEM :
COLOR TEMP
→
3200k
.
WHITE BAL switch (on the side panel)
→
PRESET (3200 K)
(When using the 4:3 type)
Chart frame
(When using the 16:9 type)
Underscanned monitor frame
Adjustment Procedures
1.
PA G Gain Adjustment
Test Point :
TP71 (GND : GND A) /
EX-464 extension board
Adjustment Point :
1
RV1/PA-273 board
Specifications :
A = 165
±
10 mV
2.
Set the TEST OUT switch (on the side panel) to ENC.
3.
Menu setting
MENU : SERVICE
PAGE :
VA TRIMMING
ITEM :
TEST OUT
→
ENC
Connect the vectorscope to the TEST OUT connector.
4.
PA R/B Gain Adjustment
Adjustment Point :
1
RV1/PA-272 board
1
RV1/PA-274 board
Specifications :
Center the beam spot on the
vectorscope.
R
M
G
C
Y
G
Y
L
B
10
u
S
50m
B
W
L
A
(Oscilloscope)
1
1
1
RV1/PA-272 board
RV1/PA-273 board
RV1/PA-274 board