G)
AUTO/B&W
switch
(13.
INPUT
VIDEO
board)
AUTO:
Thi
s switch detects if burst
is
present in
the
VTR
playback signals, and automatica
ll
y sets the system
to col
or
or bl
ac
k-and-white
mode
.
B&W:
This
se
ts the whole system
to
m
onoc
hr
ome
opera-
tion and the write clock is co
nt
ro
ll
ed
by
the H
SYNC.
@
CABLE
COMPENSATION
switch
(13
.
INPUT
VIDEO
board)
This switch serves to compensate for deterioration in
th
e
fre
quen
cy
respon
se
cau
se
d by the
ca
bles between the VTR and
BVT
-2000
. Compensation for cable lengths
of
0, 5,
10
and
25
me
ters corresponding to pins 1, 3, 5 and 7
of
SW4
is
available.
@
Y/C
DELAY
COMPENSATION
switch
(13.
INPUT
VIDEO
board)
Thi
s switch
se
rves
to
co
mpensate
fo
r the Y/C group del
ay
difference produced in the VTR
or
BVT-2000 across a
±
IO
nsec range.
Th
e Y
/C
delay compensation makes u
se
of
th
e all-pass
network, and the delay time of the chroma signal can be
selected wi
th
re
spect
to
the Y signal
in
accordance with the
positi
on
of
this
sw
itc
h.
The
del
ay
time
in
the chroma band
ca
n be switched to - 75,
-50,
- 25, O, +25, +50, and +
75
nsec corresp
on
ding to the
switch pin position l, 2,
3,
4, 5, 6 and 7.
©
DIRECT/PROCESS
switch
(12.
HETERODYNE
COLOR
board)
Option
BK-2003
This switch
is
used only
fo
r U-matic VTRs.
DIRECT: Set the switch
to
this positi
on
when a heterodyne
col
or
VTR (such as Sony's
BV
U-
200A or
BVU-J
00)
, which is provided
with
an SC
input
co
nn
ector
for Y
/C
int
erleaving, is connected.
PROCESS: S
et
to this position when a hetero
dyn
e
co
lor
VTR (such as Sony's
V0-2860)
, which does n
ot
have an SC input
co
nn
ector
for Y/C interlea
vi
ng,
is
connected.
@
COLOR
FRAMING
ADJUSTMENT
vrs
& lamps
@
COLOR
FRAMING
NORMALiADJUST
switch
& la
mp
}
(7
.
SEQUENCER
board)
This
con
trol secti
on
consists
of
two
variable resistors and
two light-emitting diodes. Adjust this section when
th
e col
or
phase must be repeated with a high level
of
precision,
fo
r
example, editing accurately a t
ape
which is recorded with
co
lor
fram
in
g servo, or when composing video anim
at
ion.
Turn the
@ NORMAL/ ADJUST
sw
itch to ADJUST (LED
li
ghts up) and adjust the
CD
two
va
riable resistors so th
at
the
two
CD
LEDs
li
g
ht
up. After adjustm
ent,
be
sure to set the
@ NORMAL/ ADJUST switch to NORMAL position. (The 3
LEDs go
off
.)
If
the SYSTEM SYNC PHASE con
tro
l and the SYSTEM SC
PHASE
control
arc turn
ed
afte
r ad
just
ing these two variable
resistors, turn the
@N
ORMAL/ADJ
US
T switch to ADJUST,
and make sure that the two LEDs
li
ght
up
.
If
they
do
n
ot
light
up, read
just
th
e two variable resistors.
Q)
DOC
ON/OFF
switch (6.
SYNC
GENERATOR
2 board)
ON:
Thi
s is the normal positi
on
.
Off':
Thi
s turns the
dropout
co
mp
en
sa
tion off.
@ V
BLANKING
LINE
SELECT
switches
(6
.
SYNC
GENERA·
TOR
2 board)
8 circuit switches
By
setting switch 2 and
sw
i
tc
h 3
to
ON, it
is
possible to
se
lect
any
li
ne in the vertical blanki
ng
p
er
i
od
which corresponds to
the
numb
er
of
the board, and so these are u
se
d to shape
th
e
li
nes and set them to the pedestal level.
®
LOCK
MODE
lamps (3.
SYNC
GENERATOR
1 board)
1-12
Th
e appropri
ate
lamps illuminate
to
show the
typ
e
of
reference
signal being supplied to
th
e BVT-2000 (COLOR/SYNC/
INT
ER
NAL).
ADVANCED
SYNC
AUTO/MANUAL
switch
} (3.
SYNC
ADVANCED
SYNC
PHASE
control
GENERATOR
ADVANCED
SYNC
PHASE
IN
lamp 1 board)
AUTO: This is used
to
co
mpare
the reference vertical
sy
nc
with
the
VTR playba
ck
vertical sync phase, and
co
ntr
ol the advanced sync phase a
ut
omat
ica
ll
y
so
that the playback video phase is brought to the
ce
nt
er
of
the
wi
ndow.
MANUAL:
Th
is is used to allow the advanced sync phase to
be
cont
ro
ll
ed with the advance sync phase control
trimmer vr3. (Adjust so that the ADVANCED
SYNC PHASE
IN
la
mp
lights up. This lamp
co
rresp
on
ds
to
the
OFF
TAPE V-PHASE IN lamp
on the fro
nt
panel.)
•
Us
e the MANUAL mode when there are problems with the
ri
se
response in the AUTO mode.
REFERENCE
SELECT
switch (3.
SYNC
GENERATOR
1
board)
This
sw
i
tc
h is used
to
set the BVT-2000's reference signal to
COMP VIDEO, SC,
or
COM
P SY
NC
.
In
ternal l
oc
k is
automatica
lly set wh
en
a signal which corresponds to the
position of this switch is n
ot
con
ne
cte
d to the con
ne
ct
or
panel.
HD
SIGNAL
PICK
UP }
@
VD
SIGNAL
PICK
UP (3.
SYNC
GENERATOR
1 board)
SIGNALGND
The
se
can be used for the external sy
nc
signals of the
osci
ll
oscope, if so required, when checking the wave-forms
of
the TBC
se
cti
on
s.
@
BURST
LEVEL
& PHASE
controls
(4. PROCESSOR board)
These are used
to
adjust
fi
nely the burst level and the burst
phase
of
the
output.
@
SYNC
LEVEL
c
ontrol
(4. PROCESSOR board)
This is used to adjust finely the
sy
nc level
of
the output.
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