Tektronix 5000 Series User manual

COMBINATION
EDITION
Sad
Tektronix
COMMITTED TO
EXCELLENCE
Wizards
Workshop
********************
ALL
SERVICE
QUESTIONS
FROM
EUROPE ,
MIDDLE
EAST ,
AND
AFRICA
SHOULD
BE
ADDRESSED
TO
THE
EUROPEAN
MARKETING
CENTER
SERVICE
GROUP
IN
THE
NETHERLANDS
.
TEKTRONIX
INTERNAL
USE
ONLY
Published
by
Service
Admin
Support
56-037
Ext .
8939
Merlo
October
31
,
1980
Issue 10-22
TABLE
OF
CONTENTS
ONFIDENTIAL
PERSONNEL
CHANGES
1
GENERAL
BEAVERTON
PRODUCT
UPDATE
STATUS
.
·
2
P / N
158-0151-00
MIXED
STOCK "
PURGE
"
3 .
SERVICE
SUPPORT
CLOSING
DURING
THANKSGNVING
SHUTDOWN
.3
ADMINISTRATIVE
SUPPORT
REPORT
DISTRIBUTION
·
4
LABORATORY
INSTRUMENT
DIVISION
TM500
CG551AP
PARTS
SUPPORT
. 5
5
VY
DC505A , 190 REPLACEMENT
.
5
DM501A
SRECIAL
MAINTENANCE
INFORMATION (
Reference Pull -
out )
A - 1
Hea
SC504
MODIFICATIONS
.
·
6
TM506
:
CABINET TO
RACKMOUNT
CONVERSION
..6
I

-
TABLE OF CONTENTS ( CONTINUED )
5000 SERIES
7
5B10N , RANDOM LOSS OF SWEEP S / N B099092 & UP .
5441 , AUTO FOCUS MODIFICATION DOCUMENTATION S / N B092860 & UP . .
8
7000 SERIES
7623A , 7633 , & 7834 FLOOD GUN ANODE VOLTAGE SPECIFICATION WAIVER . 1.8
COMMUNICATIONS DIVISION
MEDICAL
067-0706-99 TEST UNIT MANUAL CORRECTION
.
9
400
CHART
RECORDER
GEAR
PROBLEM
·
9
.
400
RECORDER
TRIGGER
PROBLEM . 9
400
SERIES MEDICAL
MONITORS ,
UNDERSIZED
CRT'S
10
410
CRT
REPLACEMENT
KIT 10
413
EMI
IMPROVEMENT (
CORRECTION
)
..
.
.10
.
u
SPECTRUM
ANALYZERS
SPECTRUM
ANALYZER
C95
SOCKET
REPAIR
. 11
SPECTRUM
ANALYZER
SPOT
-
OF -
GOLD ( SOG
)
CONNECTORS
.
11
7L5 NEW STORAGE BOARD , 040-0872-01 , PRICE INCREASE
.11
TELEVISION PRODUCTS
528
RESISTOR
RELIABILITY
PROBLEM 12
147A
BREEZEWAY
SPECS
13
1410
SERIES
-
SPG11
, 12
, 22
CAPACITOR FIT
PROBLEM
14
1420
POWER SUPPLY
NOISE
15
1440
MODS
I2R
,
I3R ,
13C .
15
1440 , 4H
OSCILLATOR
ADJUSTMENT
RANGE
.16
1900 /
SUBCARRIER OUT / FULL
-
FIELD OUT
BURST
PHASE
RELATIONSHIP
RANDOM (
CORRECTION )
..
·
17
II
October 31 ,
1980
Issue
10-22

TABLE OF CONTENTS ( CONTINUED )
SERVICE INSTRUMENT DIVISION
ACCESSORIES
C - 50 SERIES CAMERA CURRENT SURGE
18
C - 51 , C - 53 , AND C - 59 CAMERA OCCLUDER ASSEMBLIES
18
P6046 , 0123 PARTS REPLACEMENT KIT
19
P6201 , Q100
REPLACEMENT
19
P6302 AND P6042 HALL DEVICE EPOXY PROBLEM .
19
PORTABLES
T900 INTERMITTENT ATTENUATOR
20
T912 RELIABILITY IMPROVEMENTS
.
21
TELEQUIPMENT
CAPACITOR REPLACEMENT . .
25
PC BOARDS
...
25
C
PILOT LAMP FAILURE .
25
INFORMATION DISPLAY DIVISION
IDD MAINTENANCE AGREEMENT PROMOTION SERVICE PLAN 12/14/79
26
SERVICE UPDATE PROGRAMS STATUS ( Reference Pull - Out )
B -
1
4052/4054 MISLABELED IC'S ON MAS BOARD ..
26
4081 , 619 : STORAGE CIRCUIT BOARD M36079
. . ,
27
O
4631 , 4632 , 4633A , 4634 : BOWED PAPER CUT
.
27
4631 / 32 / 33A / 34 : FAULTY SPROCKETS
28
4634 SCAN RATE CALIBRATION CORRECTION
.. 29
4663 INTERFACE BOARDS MODIFICATION
31
.
4905 WANGCO HARD DISK DRIVE TERMINATOR .
31
C
III
October 31 , 1980
Issue 10-22

TABLE
OF
CONTENTS
( CONTINUED
)
LABORATORY
INSTRUMENT
DIVISION
MICROCOMPUTER
DEVELOPMENT
PRODUCTS
8001
/
8002A
,
8041
EMULATION
RESTRICTIONS
..
32
SEMICONDUCTOR
TEST
SYSTEMS
S -
3200 :
POWER
CABLES ,
T.I.M.E.
OPTION
33
S -
3200 :
TEST
STATION
POWER
SUPPLY
SENSING
35
SIGNAL
PROCESSING
SYSTEMS
7912AD
FIRMWARE
UPGRADE
CLOSES
36
REFERENCE
PULL -
OUTS
LABORATORY
INSTRUMENT
DIVISION
TM500
DM501A
SPECIAL
MAINTENANCE
INFORMATION
A - 1
and
A
-
2
INFORMATION
DISPLAY
DIVISION
SERVICE UPDATE PROGRAMS STATUS .
B - 1
thru
B - 3
Fiacie
wur
!
Shaund
Happy
IV
October
31 ,
1980
Issue
10-22

PERSONNEL
CHANGES
C
First of all
your
editor
would
like
to
apologize to RON
BLACK of the
Concord
Service
Center for
leaving his
position
hanging in
the
air .
Ron's
position
is
Field
Service
Specialist II .
My
apologies
Ron .
Sharon
******
NEW
HIRES
TOM
FLYNN
San
Diego
Tom
has
been
the Stock
Clerk in
the San
Diego
Office
for
the
past
year
and a helf and is now joining the Field Service team . He will assume
the responsibilities of a Field Service Specialist I.
Good
luck
and
continued
success in
the
future
to
Tom .
**
ROBERT
COLLINS -
Boston
Bob has joined the T & M service team as an ET - I . He was discharged from
the U.S. Army in August of this year , after working as a repair / calibration
technician for four years . Bob and his wife Chong Hai reside in Nashua ,
N.H. He plans to complete his degree work for an EE at a local university .
Bob's
hobbies
include
photography
and
bowling .
**
RONALD THERIAULT - Boston
C
Ron comes to Tek from Raytheon Co. , where he was in charge of maintaining
all of the electronic equipment for the special microwave devices division .
He holds an associates degree in Electronic Engineering from Franklin
Institute of
Boston .
Ron also has a master televisions technician's
license and repairs television and stereo equipment at his home .
When
not
totally absorbed in electronics , Ron enjoys weight lifting , running , roller
skating , and music . He will be on Boston's T & M Service team as an ET - I .
**
TERRY
WELLS
-
Cleveland
Terry comes to Tek with a Tacan Radar repair background in the navy .
He will performing the duties of Electronic Technician I in for the Cleve
land
team .
**
A hearty welcome to all of our new hires !!!!!
******
PROMOTIONS
ROBERT KIMBALL
Syracuse
Promoted to Electronic Technician III
JIM CAMPBELL
Syracuse
Promoted to Sr. Field Clerk / Driver
Congratulations
to
both
these
men !!!
--Editor
-1 October 31 , 1980
Issue 10-22

中
:

GENERAL
BEAVERTON
PRODUCT
UPDATE
STATUS
The
following
is a
synopsis of
the
status of
Beaverton
Update
Programs
(
U.S.
Code 18
) to
date :
SCHEDULE
COMPLETION
PRODUCT
DESCRIPTION
PART
NUMBER
DATE
PUBLICATION
Active :
7-18
(
U.S. )
Spot -
of
-
gold
Connectors
AP305
SÓB
10-6-80
Return
to
Beaverton
5000/7000
Spot - of - gold
Connectors
(
Field )
175 -
XXXX
-
XX
AP109
WIZ
4-4-80
T900
Vertical
Atten .
343-0564-00
343-0565-00
1-1-81
WIZ
12-17-79
413
Power
Supply
040-0961-00
Indefinite SOB
5-6-80
WIZ
6-13-80
C30B
X -
Sync
Wiring
Error
No
parts
12-31-80
SOB
2-28-80
7904 /
R7903
/
7704A
CRT
X
-
Ray
--
Indefinite
SOB
8-4-78
WIZ
9-29-78
221
Safety
- PS
Insul .
045-0016-00
Indefinite
WIZ
5-30-80
7D15
Socket
Rework
10+
sockets ;
AP109
Beaverton
SOB
7-24-79
Model
3
Scopecart
Waber
Power
Strip
Safety
Exchange -
Beaverton
Indefinite
IOC
6-18-80
Inactive / Terminated :
DM44
Spot - of - gold
Medical Monitors CRT Socket
--Todd
Paulus
58-511 ,
Ext
.
7092
-2
October 31 , 1980
Issue
10-22

P / N
158-0151-00
MIXED
STOCK "
PURGE
"
The
158-0151-00
is
a
29.952
MHZ
Crystal ,
but
some
parts
in
stock
were
found
to
be
marked
29.752
MHZ
. Check
all
stock
areas
under
P / N
158-0151-00
and
purge
all
parts
marked
29.752 MHZ
; reorder
as
necessary
.
11
--Rich
Andrusco
58/511
,
Ext
.
5609
SERVICE
SUPPORT
CLOSING
DURING
THANKSGIVING
SHUTDOWN
All
three
Service
Support
groups ;
T & M
-
Bldg
. 58
,
Systems -
Bldg
. 92
,
and
IDD
-
Bldg
.
63
,
will
be
closed
during
the
Thanksgiving
shutdown
November
24 thru
26 .
Factory
Service
will
remain
open
to
handle
all
technical
support
so
please
direct
all
technical
questions
to
them
during
this
period .
--Sharon
Huetson
Editor
-3
October
31 ,
1980
Issue
10-22

ADMINISTRATIVE
SUPPORT
REPORT
DISTRIBUTION
Beaverton is
still
having
some
problems
with
mis -
addressed
mailings .
Please
ensure
Supervisors ,
Technicians ,
and
CSR's
are
mailing
the
following
forms
and
reports to
the
appropriate mail
station .
M / S 56-063
M / S
53-114
3 .
Time
Distribution
Sheets (
TDS )
2.
Service
Information
System
Copies
of
the
Service
Record
Module
Exchange
Packets
Of
The
On
-
Site
Service
Record
With
Module
For
Exchange
b .
If
Repair
Done In
Field
4.
Component
Failure
Warranty
Information
Copy
of
the
Service
Record
with
Component
5.
Job
Number
Reports
a .
M / S 56-095
M / S
53-114
M / S 53-114
M / S 56-037
C
--Bill
Duerden
56-037 , Ext . 8938
-
-4
October 31 ,
1980
Issue 10-22

:
u
上

LABORATORY INSTRUMENT DIVISION
C
TM500
CG551AP
PARTS
SUPPORT
Do not order part number 129-0802-00 , reference Service Implementation
Notice date April 4 , 1980. This part is not currently required
and cannot be ordered .
--Frank Tucker
92-236
,
Ext .
1286
DC505A , 190 REPLACEMENT
The
physical
height
of
190
(
P / N
156-0158-00
)
varies
between
different
vendors .
Some
parts
are
too
large
for
the
space
provided .
When it
is
necessary to
replace
U90 ,
remove
the IC
socket
and
solder
U90
directly
into
the
board
.
Use P
/ N
156-0158-01 , a
pretested
IC
to
replace
490 on
the A4
level
out
board .
This
change
is
in
reference
to
Mod #
M34427
and
is
for
your
information
only .
C
--Terry Turner
92-236
,
Ext .
1288
-5
October 31 ,
1980
Issue
10-22

SC504
MODIFICATIONS
Several
modifications
have
been
implemented
on
the
SC504 to
improve
performance
.
Modification
kit
040-0974-00
contains
parts and
instructions
to
provide the
following
:
1.
Improved
high
frequency
triggering
by
reducing
noise
on the
+5
volt
power
supplies
in
the
Trigger
Switch
circuit
and
by
adding
a
1.1 ks
resistor
to
eliminate
oscillations in
the
Trigger
circuit .
2.
Improved
Vertical
Amplifier
gain
stability
with
respect
to
temperature
by
replacing
two
pair
of
transistors
in
the
Vertical
Amp with transistors that have better temperature specs .
3. Increased CRT Beam current adjustment range .
4.
Improved
sweep
linearity
in
the 50
and
100
nsec /
div
ranges .
Modification
Kit
040-0986-00
contains
parts
and
instructions
to
eliminate
30
kHz
ripple
that is
present
on
the vertical
signal
and
the
high voltage supply .
If a
customer
complains
of any
of the
above
problems
, the
appropriate
040 kit
should be
installed
.
--Terry
Turner
92-236
,
Ext
.
1288
c
TM506
:
CABINET
TO
RACKMOUNT
CONVERSION
When
converting
a
cabinet
model
TM506
to
a
rackmount
model
,
use
kit
#
040-0761-04
.
The new
040
kit
includes a 14
watt
fan to
replace
the
7
watt
fan .
This
improves
cooling
when
using
instruments
with
high
heat
dissipation
levels
in
a
rackmount
configuration
.
--Terry
Turner
92-236 ,
Ext .
1288
-6
October
31 ,
1980
Issue
10-22

5000
SERIES
C
5B10N , RANDOM LOSS OF SWEEP S / N B099092 & UP
Reference :
5B1ON Instruction Manual P / N 070-1140-00
Corporate
Mod #
M41618
The Miller Integrator microcircuit , 1210 , P / N 155-0028-00 , has developed a
greater sensitivity on its delay control input , Pin 6. The decoupling on
this pin is now inadequate , allowing a glitch on this input to cause sporadic
missing sweeps . To prevent this , remove C209 , P / N 283-0002-00 , from the front
of the circuit board and place it on the back of the board between Pins 3 and
6. See sketches for additional details .
Relocate C209 ( 283-0002-00 )
to
back of
board
Relocate C209 ( 283-0002-00 ) from front
of board to backside between pio 3 & pin 6 of 0210
( 155-0028-00
)
Pin
6
Pin 3
HEIMITTAUTI
4
ITUD
(
111
O
C117
)
A117
erry
Q
(
0716
A206
29
0716
)
R
?!
*
2350
R215
Abad
0743
A712
0214
1210
07461
SN
0080000
&
UP
#
218
A224
C275
A220
SN
BO
79999
&
BELOW
A24
C242
A24
)
a
Ons
C
(
AIT
)
регіо
R
???
F
na
21
M233
-N279
.
A
736
Omni
-2011
0271
206
R203
A225
4227
A
2
.
)
+
0144
1677
A162
C179
TAIL
CRIN
O
#
2
144
badgQDDDDD0000
adarbda000ROOT
HH1
FR22.4
-
C1970
Einrad
-
163
DOBLO
b.OOOD
CI
77
(
Ociss
CNPJ
:
000
John
Eaton
58/511
,
Ext
.
5222
-7
October
31 ,
1980
Issue
10-22

.
5441 , AUTO FOCUS MODIFICATION DOCUMENTATION S / N B092860 & UP
Reference :
5441
Instruction
Manual
P / N
070-2140-00
Corporate
Mod
#
M37626
Lately several inquiries have been received asking for schematic and parts
location diagrams . The complete information is available in the " Change
Information "
section in
the
latest
instruction
manual .
If
you are
using
the microfiche , it is not clear where to find the information . If
you
look
under the mod
summary
section
, it
states to see
the
latest
manual
.
Looking
through the main section of the microfiche manual , you will not find it .
It is
located
under the
change
information ,
on
page 3 of
the
manual
micro
fiche .
This
section
contains
the
revised
electrical
parts
list , an
adjust
ment procedure , component and adjustment locations , and schematic changes .
--John
Eaton
58/511 , Ext . 5222
7000 SERIES
7623A ,
7633 , &
7834
FLOOD
GUN ANODE
VOLTAGE
SPECIFICATION
WAIVER
Instrument
Manufacturing
has
granted a
waiver to
CRT
Manufacturing
until
December 18 ,
1980
that
allows
the
use of
CRT's
that
have
Flood
Gun
Anode
Voltages
that
drop to 80
volts
during the
erase
cycle in
Bistable
Modes .
This
temporary
waiver
does
not
change
existing EIS
specifications .
Instruments
manufactured
during
the
waiver
period
will be
evaluated
to
determine
the
affects on
performance
.
Replacement
CRT's
from
Beaverton
that
are
below
the
original
86
volt
specification
will
be
tagged
by
CRT
Manufacturing to
record
the
voltage they
read
between
80
volts
and
86
volts .
--Lynn
Sperley
58/511 , Ext . 6902
c
-8
October 31 , 1980
Issue
10-22

1
COMMUNICATIONS
DIVISION
C
MEDICAL
067-0706-99
TEST
UNIT
MANUAL
CORRECTION
Reference :
Manual
,
Page
3-28
In
the
adjustment
procedure ,
Step
210
should
read :
Connect
both
X1
probes
to
TP94
(
see
Fig
.
3-12 ) .
Step
21g
should
read :
Adjust -
CVA
TSee
Fig
.
3-5
hor a
DC503
reading
of
32
Öms +
1
Oms .
Please
make
the
appropriate
corrections
to
your
manual .
--Submitted
by
Steve
Biron
,
Atlanta
--Inserted
by
Dave
McKinney
,
58/511
Ext
.
7072
400 CHART RECORDER GEAR PROBLEM
Reference :
P / N 118-0076-00 Motor Assembly , Chart Recorder Drive
C
Motors in
the
warehouse
were
found to
have
improper
gears .
Some
of
these
may
have been shipped to the field . The specific problem is that the 18 tooth gear
is only .200 " long instead of .350 " . The gear is too short to mesh properly in
the 400 recorder . Check your stock and reject any defective parts through nor
mal
channels .
--Dave
McKinney
58/511 ,
Ext . 7072
400
RECORDER
TRIGGER
PROBLEM
Reference :
Run
Control
Board
Schematic
1
A
slow
falling
edge
on
the
pulse
which
triggers
U -
118B
may
cause
it
to
re
-
trigger .
If
this
one -
shot re
-
triggers ,
it
will
cause
the
MARK
button to
produce
a
double
mark
each
time
the
button
is
pressed .
Effective S / N
B024970 ;
C -
116 P / N
283-0111-00 ,
0.
luF
changes
to
P
/ N
283-0032-00
470pf
.
The
Run
Control
Board
, P
/ N
670-4692-03 ,
changes
to a
670-4692-04 .
The
new
capacitor
eliminates a
double mark
when
the
MARK
button is
pressed
.
--Dave
McKinney
58/511 ,
Ext .
7072
C
-9
October 31 , 1980
Issue
10-22

400
SERIES
MEDICAL
MONITORS ,
UNDERSIZED
CRT'S
Reference :
Kit P / N
050-0659-01
*
Kit P / N
050-1419-00
Manufacturing is receiving slightly undersized CRT's which will not allow proper
seating .
To
correct the
problem
four ( 4 )
cushion
pads are
added
to
shim the
CRT
against the retainer shield . This will allow for proper seating against the tabs
on
the
subpanel .
If or
when
replacement
of
the
CRT becomes
necessary
refer to
the
following
:
1. Kit
P / N
050-0659-01
*
replaces
the
CRT
in
the
410 monitor
,
S / N
B010100
-
B169999
.
2.
Kit P / N
050-1419-00
replaces
the
CRT in
the
408 ,
412 ,
413 ,
413A
, 414
and
( 410 ,
S / N
B170000 -
up ) .
*
Kit P / N
050-0659-01
replaces
kit P / N
050-0659-00
.
The
difference
is the addition of the cushion pads .
All
instructional
information is
provided
in
the
kits .
--Dave
Mckinney
58/511 ,
Ext
.
7072
410 CRT REPLACEMENT KIT
Reference :
Kit P / N
050-0659-01
Effective : S / N B010100 - B169999
A new CRT , P / N 154-0508-01 , replaces P / N 154-0508-00 which is no longer available .
Use of the new CRT requires replacing the CRT anode lead assembly , P / N 195-0046-00 ,
with a new CRT anode lead assembly P / N 195-0125-00 .
A strip of self - adhesive foam padding is included in the kit , to be used , if neces
sary , to prevent the CRT from shifting out of alignment .
NOTE : If the serial number of your instrument is above those listed , or if this
kit has been installed previously , use parts replacement kit P / N 050-1419-00 as a
replacement
for V555
.
--Dave
McKinney
58/511
,
Ext .
7072
413 EMI IMPROVEMENT ( CORRECTION )
Reference :
WIZARD Article - 413 EMI Improvement
Issue
10-19 ,
September
19 , 1980
The
original
WIZARD
article has an
error
in
the
parts
listing . The
capacitor
,
C379 , is listed as a 0.0015 pF . It should read as a 0.0015 uF capacitor .
--Dave
McKinney
58/511
,
Ext
.
7072
-10
October 31
,
1980
Issue
10-22

SPECTRUM
ANALYZERS
C
SPECTRUM
ANALYZER
C95
SOCKET
REPAIR
If
you
have a
spectrum
analyzer
that
has a
C95
failure
,
you
can
remove
the
socket
and
solder
the
IC
into
the
board .
There
is
no
program
to
send a
spectrum
analyzer
with
C95
failures
back
to
Beaverton
for
repair .
An
easy
way
to
isolate à
C95
failure
is
to
push
down
lightly
on
the
IC
.
This
will
move
the
IC
in
its
socket
and
appear
to
fix
the
failure .
This
failure
will
return
if
the
socket
is
not
removed .
Do
not
return
any
unit
for
C95
socket
rework
unless
it
qualifies
for
the
Manufacturing
Repair
/
Return
Program .
Documentation
of
past
failures
must
be
provided .
--Rich
Kuhns
58/511 ,
Ext
.
6782
SPECTRUM
ANALYZER
SPOT -
OF -
GOLD
(
SOG
)
CONNECTORS
There
are
some
questions
on
the
procedure
for
Repairing
SOG
connectors
in
the
7L5 ,
7L12
and
7L13 .
No
Code
18
program
is
set
up
to
repair
these
units .
When
you
have a
7L5 ,
7L12
or
7L13
with
SOG
connectors
,
you
can
replace
the
indivi
dual
connectors (
you
will
need a
Berg
HT95
crimping
tool )
or
the
cables
assemb
lies
can
be
replaced
.
Replacing
the
individual
connectors
is
easier
and
less
costly
of
the
two
choices .
The
Berg
crimping
tool
can
be
purchased
from
Ravencraft
Ind .
,
14860
SW
Bonny
Brae
Street ,
Beaverton ,
OR
97005 ,
Phone
(
503 )
646-9261
,
ATTN :
Frank
Ravencraft .
Do
not
return
any
unit
for
SOG
rework
unless
it
qualifies
for
the
Manufacturing
Repair
/
Return
program
. Documentation
of
past
failures
must
be
provided .
--Rich
Kuhns
58/511 ,
Ext .
6782
7L5
NEW
STORAGE
BOARD ,
040-0872-01
,
PRICE
INCREASE
The
price
of
the
Modification
Kit
,
P / N
040-0872-01 ,
has
been
brought
into
line
with
other
similar
mod
kits .
See
WIZARD'S
WORKSHOP
article on
Pages 9
and 10
of
the
March 21 ,
1980
issue
for
further
information .
Refer
to
the
Numerical
Parts
Record
(
NPR
)
for
the
current
price .
--Rich
Kuhns
58/511
,
Ext .
6782
-11
October 31 , 1980
Issue 10-22

)

TELEVISION
PRODUCTS
528
RESISTOR
RELIABILITY
PROBLEM
Reference :
Manual P / N
070-0800-00
Kelvin
brand
resistors
,
P / N
308-0797-00 ,
R150
and
R170 (
B266750
and
subsequent
)
have
exhibited
reliability
problems .
Factory
stock
has
been
purged .
It
is
recom
mended
that
field
stock
also be
purged
of
this
part
and
instruments
that
were
shipped
containing
this
part
have it
replaced as
they
come in
for service
.
Kelvin
parts
can be
recognized by
the
name on
the
case .
An
acceptable
replace
ment
is
the
DALE
brand
(
same
part
number
) .
Kelvin
has
been
disqualified
as
vendor
for
this
part
.
--Bill
Bean
58/511 , Ext . 6507
C
C
-12
October 31 , 1980
Issue 10-22

147A BREEZEWAY SPECS
Reference
: Mod #
41481
,
Manual P / N
070-2029-00
Diagram
18
,
Modulator
Board
The standard instrument has a breezeway that is too long to easily meet SMPTE
specifications . Should you encounter an inability to make this spec , R8538
can be
changed
from an 11K
resistor
(
321-0293-00 ) to
a
7.15K
resistor
(
327
0275-00 ) .
Also change
R406
from a 15.8K
resistor
(
321-0308-00
) to an
11.OK
resistor
( 321-0293-00 ) .
The
SMPTE
spec for
breezeway
is
0.6usec .
147A's have been typically 0.8u sec .
T
RISE FA
TIME
375
ns
+ 15 %
90 %
FRONT PORCH
1.54 ws : 50
ns
|
10 %
50 %
BURST
2.31
us
+ 70 ns
1
10 %
BLANKING LEVEL
BLANKING
LEVEL
LINE
SYNC
10
%
um
10 %
4.71
us
50 ns
50
%
Breezway :
Defined
in
INTSC
color
as
that
por
tion
of
the
back
porch
between the trailing edge
of
sync
and
the start
of
color
burst .
I
2
90 %
RISE -FALL TIME
115 ns ,
10 %
11.1
us
Determined
from
3.579545
MHz
--Bill
Bean
58/511
,
Ext
.
6507
-13
October
31 ,
1980
Issue
10-22