Tektronix 7834

TELEVISION
PRODUCTS
TV
GENERATORS /
REPLACEMENT
OF
TEK
MADE
SYNC
AND
TIMING
CHIP
-
ADDENDUM
When
ordering
a
050 *
parts
kit
to
replace
the
Tek
made
155-0147-00
/
02
sync
and
timing
chips
,
be
sure
to
use
a
negotiated
price
(
NP )
(
as
listed
on
Parts
Notice
204
)
rather
than
the
list
price
of
the
kit .
Use
the
list
price
only
when
the
customer
is
not
returning
a
defective
155-0147-00
/
02
and
the
circuit
board .
See
parts
notice
204
for
additional
information .
Please
insure
that
the
Customer
Service
Representative
includes
the
Negotiated
Price
in
the
Stock
Requisition
when
the
order
is
placed .
*
050-1338-00
050-7339-00
050-1340-00
050-1341-00
050-1342-00
050-7343-00
050-1344-00
--Steve
Schmelzer
58/571
,
Ext
.
6507
1900
/
OPERATING
PRECAUTIONS
FOR
1900
TEST
INSERTION
GENERATOR
Program
Routing
and
Genlock
Source
Selection
APPLICATION
:
1900
is
being
used
with
the
015-0374-00
Remote
Control
Unit
for
VITS
and
VIRS
insertion
.
BACKROUND
:
The
factory
programming
of
the
Remote
Control
Unit
is
such
that
the
ENABLE /
DISABLE
switch
does
not
affect
the
INSERT
,
BYPASS
,
PROGRAM ,
or
BLACK
BURST
controls
.
These
controls
are
always
active
.
POSSIBILITY
:
The
user
may
inadvertently
select
BYPASS
or
BLACK
BURST
,
both
of
which
will
cause
the
1900
to
go
to
bypass
thus
discontinuing
VITS
insertion
.
RECOMMENDATION
:
Be
aware
that
users
may
approach
you
with
this
problem .
The
cure
is
to
move
jumper
P635
(
in
the
Remote
Control
Unit
)
to
pins
B
and
C.
This
causes
the
genlock
source
and
program
routing
selectors
to
be
disabled
and
the
1900
to
default
to
INSERT
and
PROGRAM
when
the
ENABLE
/
DISABLE
switch
is
in
the
DISABLE
position .
(
continued
on
the
following
page )
-14
June 27 ,
1980
Issue 10-13