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3-5-17. DTL Limiter Adjustment
3-5-18. H/V RATIO Adjustment
Object:
Grayscale chart
Note: Be sure that "3-5-16. DTL Crispening/Aliasing
Equipment:
Waveform monitor
Adjustment is completed.
To be extended: IE-47 board
Preparation:
Object:
Grayscale chart
e $1 (DTL ON/OFF)/IE-47 board — "ON"
Equipment:
B/W monitor screen
e @RV3 (H/V RATIO)/E-47 board
— Mechanical center
Preparation:
WHITE BAL switch/camera side
e @RV5 (DTL LEVEL)/IE-47 board — Fully clockwise ©
— PRESET
e @RVY (DTL CLIP)/IE-47 board
Test point:
VIDEO OUT
— Fully counterclockwise ©
Adjusting point: @RV3 (H/V RATIO)/IE-47 board
Test point: VIDEO OUT connector/camera side
Adjustment Procedure
1.
Chart frame = Underscanned monitor frame
Adjustment Procedure
2.
Test point:
VIDEO OUT
1.
Chart frame = Underscanned monitor frame
Adjusting point: Lens iris
2.
Test point:
VIDEO OUT
Specification:
A = 80+ 2 IRE (for NTSC)
Adjusting point: Lens iris
560 + 10 mV (for PAL)
Specification:
| White Level = 90 + 2 IRE (for NTSC)
630 + 10 mV (for PAL)
3.
Turn @RV9 (DTL CLIP)/IE-47 board clockwise slowly and
"s
stop where the spike at portion "A" becomes 2/3 of its
oe
maximum size.
A
3.
Observing the point indicated on the B/W monitor (See
the figure below), adjust @RV3 (H/V RATIO)/IE-47 board
—
{—)
—
so that both horizontal and vertical detail levels are equal.
sapie co
H:V=1:4
|
nes
— pe
—
saan
H
=
om
on
=
=
=
Cee aU EEnE
EEE
a
a
Vv
Note: After adjustment, carry out "3-5-19. Detail Level Adjust-
ment".
IE-47 BOARD
— COMPONENT SIDE —
CNi
Le
eae
[Jos
TP2
AVI2
Tis
o
(HF orFsen
(HE ALIAS)
6
3
L
i
Eat)
Orvis
oL3
of 12 Rvs
LPs
(2HLEV.)
(1HLEV.)
TP10 Dla
(OTL ALIAS)
LJrs
oz
ToL
om
a
a
oa
QICRISP,)
FL
TPit
7
Be ea
omg,
F
(BLK. BAL.)
@
AVIO
(LEV. DEP.).
7
cv1
0
i
@
V9
(HF PHASE)
(DTL CLIP)
Qe
Qo.
(PHASE!)
RVS
Rv3
(DTLLEV.)
(HV RATIO)
DXC-637 (UC)
3-18
DXC-637P (EK)
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