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3-7.
DEFLECTION ADJUSTMENTS
Check B+,
as described in Section 3-8, before
making any adjustments to the deflection circuits.
Place the camera in a test jig (see Section 4-1),
or put the camera on the tripod and point the
camera at the test card.
The distance between
the lens and the test card should be 2.5
ft.
1.
Vertical Size Adjustments
a.
Set up the camera to display video output on
a monitor.
See Section 4-2.
Make sure that
the monitor is not overscanned and has good
linearity.
b.
Connect the vertical input leads of the scope
between the V out terminal on the deflection
board and ground.
ce.
Adjust R131 HEIGHT for 3.5 volts +0. 2 volts
(P-P)
d.
Adjust R128 V LIN for best linearity on the
display.
Reset R131 if necessary to produce
best linearity.
2.
Vertical Frequency Adjustment
(Factory Service Center)
Equipment required: Frequency counter
HP~521C
or equivalent
a.
Connect the input lead of the counter to the V
out terminal on the deflection board.
See Fig
8-3 Connect the ground lead to the chassis.
b.
Turn on the counter.
Set the Gate Selector to
1 sec.
ec.
Turnon Camera.
Allow
five minutes for
warmup.
Set mode switch to VTR but dis-
connect VTR so that vertical oscillator runs
free.
d.
Adjust VERTICAL
FREQUENCY
for a stable
counter reading of 56Hz
(£1 Hz)
e.
Disconnect the counter.
f.
Check operation with the Videocorder
as
follows.
Connect the camera to the Video-
corder in the usual way.
Set up the E-to-E
mode and turn the motor on and off several
times.
Make sure that the camera locks up
properly and has no vertical jitter or bounce,
when the motor in the Videocorder is running.
g.
Lock R123 with white paint.
3.
Vertical Frequency
(Field Procedure)
a.
Connect the camera to the Videocorder
and set
up the camera E-to-E mode.
b.
Turn on the motor in the VTR.
In the CV-2100
series, the motor will be running when the VTR
is in the E-to~E mode.
Observe
the picture on the monitor and turn
VERTICAL FREQUENCY
R123
clockwise
slowly.
See
Fig. 3-7.
Stop clockwise ro-
tation where the picture falls out of sync and
appears to roll downwards erratically.
Turn
R123
counterclockwise
from this position
slightly.
Lock R123 with white locking paint.
V. FREQ
ADJ
Fig. 3-7.
VERTICAL FREQUENCY
ADJUSTMENT.
Horizontal Size Adjustment
Place the camera in the test jig (see Section
4-1) or point the camera at a test card lo-
cated 2.5 ft. from the lens.
Connect the vertical-input lead of the scope
to the H out terminal on the deflection board.
See Fig. 3-3.
Adjust R115 HORIZ
OUT for a reading of
40 volts,(peak-to-peak).
Observe the monitor and reset R115,
if
necessary for correct picture width.
Horizontal Frequency Adjustment
(Factory Service
Center)
Equipment required:
Frequency Counter HP-521 C
or equivalent.
Connect the input lead of the counter to the
H OUT terminal on the D board.
See Fig
3-3.
Connect the ground lead to the chassis.
Turn on Camera.
Allow five minutes for
warmup.
Set mode switch to VIDEO or RF.
Adjust the core of L101 HOR FREQ for a
counter reading of 15.745 Hz +5 Hz.
Nete:
Use a non-metallic
screwdriver-
type alignment tool to adjust L101.
In
some cases the core of L101 may be
3-5
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