Sony DXC-637 - DTL Limiter Adjustment; H;V RATIO Adjustment

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)