Table of Contents
Advertisement
SECTION
5
VIDEO SYSTEM ALIGNMENT
The video system alignment procedure is shown
5-3.
DEVIATION
ADJUSTMENT
in Charts 5-1 and 5-2.
(including
1. Clamp
level adj.
2. PB output
DEVIATION ADJ.
1.
Oscilloscope
2.
Monitor TV
2
w e
3.
SONY video alignment tape or any prerecorded
tape that has been recorded on a VTR known
to be in good condition.
a.
Clamp level adj.
b. PB output level adj.
c. Input level adj.
d. White clip adj.
These adjustments interact somewhat.
TAPE PATH CHECK
(Sec. 5-4)
MODULATOR
SYMMETRY ADJ.
(Sec. 5-5)
CARRIER
LEAK ADJ. (Sec. 5-6)
MONITOR LEVEL ADJ. (Sec. 5-7)
Procedure:
1.
Set
the
TV-CAMERA
Select
switch
to the
TV position.
2.
Connect scope to TP-104.
3.
Thread a blank tape.
4.
Set up the record mode
with no input signal.
5.
Adjust
R128
for
19 pulses
as
indicated
on
the scope screen.
19 pulses can be measured
as follows.
a. Adjust
scope
time base for:0.5us
per divi-
sion (calibrated).
b. Set scope controls to obtain
a stable trace.
Set R128
to produce
19 complete
cycles
in ten divisions.
6.
Connect
scope
to the arm of R128
(movable
slider of R128).
7.
Adjust sync tip clamp level as follows.
a. Set
scope
input
to
DC,
horizontal
time
base to 10us/cm and vertical deflection to
1V/cm.
.
b. Confirm that the VTR is in the record mode.
c. Adjust
scope
STABILITY
to
observe
a
RECORD
CURRENT ADJ.
(Sec. 5-8)
PB PREAMPLIFIER
ADJ.
(Sec. 5-9)
horizontal trace, and VERTICAL POSITION
so that the trace is positioned on the second
Chart 5-1
division from the bottom.
5-1
Advertisement
Table of Contents
