Tektronbc@
PLE
AS
E
C
HE
C
KF
O
R
C
H
A
N
G
E
I
NF
O
RM
ATIO
N
AT
THE
RE
A
R
OF
TH
IS
M
A
NU
A
L
.
7
Α
17
A
MPL
I
F
I
ER
I
N
ST
RU
CTIO
N
M
A
NU
A
L
Te
k
t r
on
ix,
Inc
.
Ρ
.
Ο
.
Box
500
B
eave
r
ton,
O
r
ego
n
97077
Serial
N
um
b
er
CO
MM
ITT
E
D
TO
E
XC
ELLEN
C
E
070-1263-00
F
i
r
st Pr
i
n
ti
ng
OCT
1971
Pr
o
du
ct
G
r
o
up 42
R
evise
d
A
PR
1984
Co
p y
r
ig
h
t
C
1971
Tek
t r
o
n
ix,
Inc
.
All rig
h
ts
r
ese
r
ved
.
Co
n
tents
of
t
h
is
p
ublication
may
n ot b
e
r
e
prod
uced
in
any
form
wit h
out
t
h e
writte
n perm
issio
n
of
Te
k tro
n
ix,
I
n c
. .
P
ro
du
cts
of
Te
k
t r
onix,
Inc
.
a n
d
its
subsi
d
ia
r
ies
a
r
e
cove
r
ed
by U
.S
.
and
foreig
n p
ate
n
ts
a
nd
/or
pe
n
di
n g p
atents
.
T
EK
T
RO
N
IX,
ΤΕΚ
,
SCO
PE-M
O
B
I
LE,
a n d
a
r
e
r
egiste
r
e d
t r
a
d
emar
k s of
Te
k
t r
o
n
ix,
Inc
.
T
ELE
Q
U
I
PMEN
T
is
α
registere
d
t r
adema
rk of
Te
k
t
r
on
ix
U
.K
.
L
imite
d
.
Pr
i
n te
d
i
n
U
.S
.A
.
Specificatio
n
an
d
price
cha
n
ge
pr ivileges
are
rese
r
ved
.
I
NST
RUMEN
T
S
ER
IA
L
NUMBER
S
E
ac
h
instr u
ment has
α
serial
nu
m
b
er
on α
p
a6el
i
n
sert, tag,
or
sta
mp
ed
on
t
he
c h
assis
.
T
h
e
fi
r
st
nu
m
b
e
r
o
r
lette
r
d
esig
n
ates
th
e
co un
try
of
ma
nu
fact
ur
e
.
T
he
last
five
d
igits
of
t
h e
se
r ial
nu
m
be
r
a
r
e
assig
n
e
d
sequ
e n
tially
an
d
a
re
u n
ique
to
eac
h
i
n
st
r
ume
n
t
.
Those
m
anufact
ur
ed
in
t
h e
U
nite
d
States
have
six
un
i
que
d
igits
.
T
h
e coun
try of
m
an
ufact
ur e
is
i
d
e n
tifie
d as
follows
:
ΒΟΟΟΟΟΟ
Te
k
t
r
on
ix,
Inc
.,
B
eaverto
n
,
O
r
egon,
U
SA
100000
Te
k
t
r
onix
Gue
rn
sey,
L
td
.,
C
ha
nn
el
Isla
n
ds
200000
Te
k
t r
on
ix
U
nite
d
K
i
n g
dom, L
td
.,
L
ondo
n
300000
So
n
y/Te
k
tronix,
Japan
700000
Te
k
t r
o
n
ix
H
olla
n
d,
NV,
H
eere
n
veen
,
T
h
e
N
et h
e
r
la
nds
TA
BLE
O
F
CO
N
T
EN
TS
P
age
S
PE
CIF
ICATIO
N
O
PER
ATI
NG
I
NSTRU
CTIO
NS
1
CI
R
C
U
IT
O
PER
ATIO
N
1
M
AI
N
T
ENA
N
C
E
CA
L
I
BR
ATIO
N
2
APPL
ICATIO
NS
ELE
CT
R
ICA
L
P
A
RTS
L
IST
DIAG
R
A
M
SAND
CI
RC
U
IT
B
OA
RD
I
LLU
STR
ATIO
NS
MEC
HAN
ICA
L
PARTS
L
IST
7
Α
17
ADD
OCT
1983
7
Α
17
I
N
ST
RU
CTIO
N
M
A
NU
A
L
SPECIFICATION
i
n
stall,
alig
n
t
h
e
upp
e
r
and
lowe
r r
ails
of
t
h
e
7
Α
17
with
t
he
plug-in
co
m
pa
r t
m
ent
t
r
ack
s
an
d
fully
inse
r t it (t
h
e
Ge
n
e
r
al
pl
u
g-i
n p
a
n
el
m
ust
b
e
fl
u
s
h with
t
he
oscilloscope
p
anel)
.
7
Α
17
is
α u
tility
plug-in
d
esig
ned
for
u
se
w
it
h
To
r
e
m
ove, pull
t
he
release
latc
h to
disengage
t h
e 7
Α
17
T
h
e
from
t
h
e
oscilloscope
.
Te
k
t r
onix
7000-se
r
ies
oscillosco
p
es
.
T
h
is
plug-in
pr
ovi
d
es
50-oh
m,
50-
m
illivolt/
d
ivision
access to
eit
he
r t
he ve
r
tical
Controls
and
Connectors
o
r
ho
r
izo
n
tal
d
eflection
syste
m
i
n
t
he
mainframe
.
It
also
p
rovi
d
es
i
n
te
r
facing
to
t
he
mai
nf
r
a
m
e
p
owe
r s
upp
lies,
P
OSITIO
N
P
ositions
the d
is
p
lay
.
rea
d ou
t
en
co
d
ing
ci r
cuits,
an
d
ot
h
er
f
un
ctions th
at
allow
cu
stom
circ
u
it
d
esig
n to
m
eet
specific
n
eed
s
.
E
lect
r
ical
C
h
aracteristics
Deflectio
n F
acto
r
:
50
mill
ivolts/
d
ivisio
n
wit
h
Gain
a
dju
ste
d
inter
n
ally
.
Freq
ue
ncy
R
es
po
n
se
(
M
ainf
r
a
m
e
depe
nd
ent)
:
7400
-
50
mega
h
ertz
;
7500
-
75
mega
h
ertz
;
7700
-
150
m
ega
h
e
r
tz
;
7900
-
greater
t
han
150
m
ega
h
ertz
.
T
h
is
plug-in
h
as
α b
asic
d
eflectio
n facto
r
of
50
I
npu
t
Im
pe
d
a
nce
:
mV
/d
iv
w
h
en
t
he
i
n
te
rn
al
Gai n
co
n
trol
is
p
rope
r
ly
a
dju
ste
d
.
G
r
eate
r
than
10
m
V
/
d
iv
at
reduced
b
a
ndwi
d
t
h
50
o
hm
s
p
l
u
s
o
r
min
u
s
10%
.
m
ay
b
e
ach
ieve
d
by adju
sti
ng
t
he
Gain
control
.
Ot
her
d
eflection
facto
r
s
may
be ac
h
ieve
d b
y
u
sing
the
sol
der
pad
s
p
r
ovi
ded
in
t h
e
plug-in,
an
d
cu
stom-
d
esigni
n
g
t
h
e
P
OSITIO
N
R
a
nge
:
ci r
cu
it
.
Refer to
t h
e
A
pp
licatio
n
s
section
for
s
uggestions
.
At
least
+10
d
ivisions
to
at
least
-10
divisio
n
s
fro
m
gratic
u
le
ce
n
te
r .
T
he 7
Α
17
is
not
factory
eq
ui
pp
ed
wit
h
r
eadou
t
.
M
axi
mu
m
I
n
p
u
t
V
oltage
:
H
owever,
access
is
provided so
t
h
at
rea
d
ou
t
e
n
co
ding
5
volts
RM
S
r
esisto
r
s
can
b
e
connecte
d
.
R
efe
r
to
t
h
e
A
pp
lications
section for
s
u
ggestio
n
s .
En
viro
nmental
C
h
a
r
acteristics
R
efe
r
to the
7000-se
r
ies
oscilloscope
mainfra
m
e
m
a
nu
al
.
OPER
ATI
N
G
I
N
ST
RU
CTIO
N
S
I
NPU
T
BN
C
co
nn
ecto
r
p
rovi
d
es
α
m
ea
n
s
for
conn
ecting
α
sig
n
al
.
Inp
u
t
Coupling
T
he 7
Α
17
I
NPU
T
is
d
i
r
ectly
coup
led
i
nto α
50-o
h
m
impe
d
ance
.
H
oweve
r
,
t
h
e
i
npu
t
may
b
e
d
esig
ned to
acce
p
t
any
type
of
signal
.
R
efer to
t
he
Applicatio
n
s
section fo
r s
uggestions
.
Deflection
F
actor
R
ea
dou
t
En
cod
i
ng
P
olarity
T
he p
olarity
of
t
he
dis
p
laye
d
sig
n
al
may
be
inverte
d
by
moving
the
st
r
ap
s
from
+
UP
(as
m
ar
k
e
d
on
t
h
e
ci r
c
u
it
board
)
to
t
he
solde
r
p
a
d
s
m
a
rk
ed
I
NV
.
CI
R
C
U
IT
O
PER
ATIO
N
7
Α
17
Ge
n
e
r
al
Th
e
sig
n
al
a
pp
lie
d to the
I
NPU
T
con
necto
r is
d
irect
T
he 7
Α
17 operates with
any
7000-se
r
ies
oscillosco
p
e
cou
p
le
d to pa
r
a
ph
ase
am
p
lifier
0110,
Q210
.
P
ositio
n
i
ng
and
is
r
ea
dy
for
u
se
as
it is
r
eceive
d
.
It
can
be
installe
d
is
achieved
b
y
varying
th
e
DC
level
at
the base of
in
any
co
m
pa
r
tment
of
t
h
e
7000-se
r
ies
oscilloscope
.
To
Q210
.
Gain
of the p
a r a
ph
ase
amp
lifier
(Q110,
Q210)
is
7
Α
17
set
to
a
pp
roxi
m
ately
one by
R
211
.
P
ola
r
ity
of
t
h
e
Special
P
arts
.
In
a
d
d
ition
to
t
h
e
sta
n
dard
electro
n
ic
d
is
p
laye
d
sig
n al
may
be
inverte
d
b
y
movi
n
g t
h
e s
h
orting
com
ponen
ts,
so
m
e
s
p
ecial
p
arts
a
r
e
u
sed
in
t
h
e
7
Α
17
.
stra
p
s
to
t
h
e
I
NV
p
ositio
n
.
T
he
out
pu
t
of
t
h
e
p
ara
ph
ase
T
hese pa
r
ts
a
r e
man
u
fact
ur
e
d
o
r
selected
by Te
k
tronix,
amplifie
r
is
co
n
necte
d to
common
emitter d
iffere
n
tial
I
nc
. i
n
accor
d
ance
wit
h our
specifications
.
T
hese
s
p
ecial
a
mp
lifie
r
Q125,
0225
and
co
m
mon
b
ase d
iffe
r
e
n
tial
pa
r ts
are
in
d
icate
d
in
t
he p
arts
list
b
y
an
aste
ris
k
am
p
lifie
r
Q120,
Q220
.
T
h
ese
a
mp
lifiers
pr
ovide
t r
igge
r
pr
eceding
t
he p
a r
t
n
u
m
b
er
.
Or
d
er
all s
p
ecial
p
arts
output
a
n
d
signal
o
utpu
ts
to the
oscillosco
p
e
m
ai n
fra
m
e
d
irectly
f r
o
m
yo
ur
local
Te
k
t
r
onix
F
iel
d Office or
via
t
he
i
n
terface
con
n
ecto
r
s
.
re
p
resentative
.
M
AI
N
T
EN
A
N
C
E
Or
de
r
ing
P
a
r
ts
.
Wh
en
or
d
eri
ng
re
p
lace
m
en
t
p
arts
f r
o
m
Ge
neral
Te
k
t r
on
ix,
I
nc
.,
incl
ude
t
h
e
instr
u
mentTy
p
e,
instr
u
ment
s
p
o
r
tion
of
t
h
e
manual
contain
s
info
rmation
Serial
Numb
er,
α desc
r
i
ption of
t
he pa
r
t (if
elect
r
ical,
This
include
circuit
number),
and
t
he
Te
ktronix
P
art
co
nce
r
ning preven
tive
m
ainte
nan
ce,
corrective
mai
n
-
Nu
mb
er
.
te
n
a
n
ce,
and
t r
oub
les
hooting
t
he 7
Α
17
.
Fu
rt
h
e
r
i
nfo
r
ma-
tio
n
relati
ng
to
ge
ne
r
al
m
ai
n
tena
nce can be found
i
n
t
h
e
7000-se
r
ies
i
n
str
u
ction
ma
n
ual
.
Solde
r
ing
Tec
hn
i
ques
.
Ca
r e s
h
o
u
l
d
b
e
ta
k
e
n
w
h
e
n
sol
d
eri
ng to p
reve
n
t
d
a
m
age
due
to excess
h
eat
.
Α
s
m
all
wattage
sol
d
e r
ing
iron
(15 to
50
watts)
s
h
ould
be
used
.
Clean
i
ng
Apply
h
eat
d
irectly
to
t
h
e
j
u
nction
to
be
sol
de
r e
d
.
U
se
To
im
pr
ove
r
elia
b
ility
and to
avoi
d p
ossi
b
le t
h
ermal
only
eno
ugh heat to
form
α
goo
d b
on
d
.
H
eat
sin
k
a
n
d
elect
r
ical
pr
ob
lems,
it is
reco
mm
ended
t
hat th
e
co
mp
o
nen
ts
w
h
en n
ecessa
r
y
.
7
Α
17
be
cleaned
at
pe
r
io
d
ic
intervals,
as
well
as
b
efo
r e
cali
b
ration
.
R
ep
ac
k
aging
for
S
h
ipme
nt
L
oose
du
st
may
b
e
re
m
ove
d
wit
h
α
soft
cloth or
α
dry
br
ush
.
H
ar
d
en
e
d
d
irt
may
be
re
m
ove
d
wit
h
α
cotton-ti
pped
swa
b
or
cloth
,
d
am
pened
w
it
h α
m
il
d
d
ete
r
gent
an
d
water
sol
u
tio
n
,
t
hen ca
r
ef
u
lly
r
inse
d
and
dr
ied
.
Troubles
h
ooting
Seve
r
al t r
oub
les
h
ooting
ai
d
s
for
t
he 7
Α
17 a
r
e given
on
o
n
e
fol
d
out
p
age
locate
d
at
t
he
rear
of
t
he
manual
.
Th
is
page
incl
ud
es
:
Sc
he
m
atic
d
iag
r
a
m
s, s
h
owi
ng
im
p
or-
tant
voltages,
co
mp
o
ne
n t
val
u
es,
and
circuit
n
u
m
be
rs
;
b
oard
p
ict
ur
es
s
h
owing
ph
ysical
locatio
ns of
t
h
e
co
mp
on
e
n
ts
;
an
d
semicon
ductor
basi
ng d
iagra
m
s
.
F
or
b
est
results,
u
se
t
hese
ai
d
s
in
con
jun
ction
wit
h
t
he
Ci
r
cuit
Operation
a
nd
Cali
b
ratio
n p
rocedu
r e
.
R
efer
to
t
he 7000-series
mainf
r
ame
m
an
ual
fo
r
gen
e r al
troub
les
h
ooti
n
g
info
rm
atio
n
.
(i .e
.
se
m
ico
nductor
care,
colo
r
cod
i
n
g,
etc
.)
.
If
t
h
e
Te
ktro
n
ix inst
rum
ent
is
to
be
s
h
i
pp
e
d
to
α
Te
k
t
r
o
n
ix
Se
r
vice
Center
for
service
or
repair,
attach
α
tag
s
h
owing
:
ow
ne
r
(wit
h
a
dd
r
ess)
a
nd
t
he
na
m
e of an
i
nd
ivi
d
ual
at
yo
ur
firm
t
h
at
can be
contacted,
comp
lete
instr
u
me
nt
serial
nu
m
b
e
r
and
α
d
escri
p
tio
n of
t
he
service
requ
ire
d
.
Save
and
r
e-
u
se
th
e
pac
kage
in
w
h
ic
h
yo
u
r
instr
u
ment
was
s
h
i
pped
.
If t
he
original
pack
aging
is
un
fit
fo
r u
se
o
r
not
availa
b
le,
re
p
ackage
t h
e
inst
r
u
m
ent
as
follows
:
T
he ca
r
ton
test
stre
n
gt
h
fo
r
yo
ur
i
n
st
ru
me
n
t
is
200
po
und
s
.
Gain
Su
rro
und
t
h
e
instr
um
ent
with polyeth
yle
ne
s h
eeti
ng to
protect
t
he
finis
h of
t
he
instr
u
ment
.
O
b
tain
α
carto
n of
cor
ru
gate
d ca
rd
boar
d
of
the co
rr
ect ca
r
ton
stre
n
gt
h
and
having
insi
d
e
d
i
m
ensions
of
no
less
than
six
i
nch
es
m
o
r
e
t
h
an
t
h
e
instr
u
ment
d
imensio
n
s
.
C
u
s
h
ion
t
h
e
instrument
b
y
tig
h
tly
p
ac
k
i
ng
t
hree
i
n
c
h
es
of
dun
nage
o
r
ur
et
h
ane
foam
between
carto
n
an
d
i
n
str
um
e
n t,
on
all
si
des
.
Seal
ca
r
ton with
s
h
i
pp
i
ng
tape
o
r
i
ndu
st
r
ial
staple
r
.
CA
L
I
BR
ATIO
N
Co
rr
ective
M
aintenance
Install
t
he 7
Α
17
in
any
7000-se
r
ies
oscillosco
p
e
m
ai
n
-
Stan
d
ard
R
e
p
lace
m
ent
P
a
r
ts
.
All
electrical
a
nd
f
r
ame
.
Apply
α
1
kH
z,
0
.4
volt
s
q
uare-wave
fro
m
t
h
e
m
ech
a
n
ical
r
eplacement
parts
fo
r
t
h
e 7
Α
17 can b
e
oscillosco
p
e
CA
L
I
BR
ATO
R
.
Ce
n
te
r
t
he d
isplay
a
nd
obtai
ned
t
hr
ough
yo
ur
local
fiel
d
office
or
represen-
a
dj
ust
t
h
e
Gain
potentio
m
eter
(locate
d
on
th
e
circ
u
it
tative
.
H
oweve
r
,
m
a
ny of
t
he
electronic
p
arts
can
be
b
oa
r
d
)
for
α
d
is
p
lay
of
eig
h
t
divisio
n
s
.
ob
tai
ned
locally
i
n
less
ti
m
e t
h
a
n
is
req
u
i
r e
d to or
d
er
t
h
em
f r
om
Te
k
tro
n
ix,
Inc
.
Before purch
asi
ng or
ordering
NOTE
re
p
lace
m
e
n
t
p
arts,
check
t
he pa
r
ts
list
for
val
u
e,
rating,
O
b
se
r
ve
p
r
o
per
termination
of
CAL
I
BR
ATO
R
ou
t
put
tole
r
ance,
a
nd
d
escri
p
tio
n
.
w
h
en
applying
voltage
to
t
h
e
7A1750
Ω
input
.
REV
.
C,
OCT
.
1977
Α
PPL
I
CA
TIO
N
S
Gene
r
al
TA
BLE
1
T
h is
section
p
rovi
d
es
s
uggestion
s
for
possi
b
le
mo
d
i-
P
O
WER
S
UPPL
Y L
OAD
L
I
M
ITS
fications
to
t
h
e 7
Α
17
.
Th
e
7
Α
17
may
b
e
m
o
d
ifie
d to
s
u
it
α pa
r
tic
u
lar
n
ee
d
b
y
u
sing
t
he
areas
p
rovi
d
ed for
S
upp
ly
V
olts
*
M
axim
u
m
Limit
circuit
con
struction
.
P
ower
s
upp
ly
a
nd
r
ea
dou
t
connec-
tions
are rea
d
ily
availa
b
le
;
see
F
ig
.
2
for
t
h
eir
locations
.
+5
V
500
mA
T
he
fro
n
t
su
b
-
p
a
n
el
of
t
h
e
7
Α
17
is
p
r
e-
pu
nched with
+15
V
500
mA
various
size
and
s
h
a
p
e
h
oles
to
allow
easy
m
oun
ti
ng of
-15V
500
m
A
switc
h
es,
indicators,
etc
.
+50
V
100
mA
-50
V
100
m
A
7
Α
17
P
ower
s
u
pply
limitations
are given
in
Ta
b
le
1 . Ι
2
ί
5
recom
m
en
d
e
d
t
h
at
ci r c
u
it r
y
added
to
t
h
e
7
Α
17 not
*These
maximums
cannot
occur
simultaneously!
T
h e
total
p
ower
exceed
these
limitations
.
d
issipation
must
not
excee
d
-
16 .5
watts
.
GAI
N
AD
J
F
ig
.
2
.
7
Α
17 s
h
owing
areas
for
circuit
construction
and p
re- p
unched
front
sub-panel
.
7
Α
17
H
IG
H
IMPE
DA
N
C
E
A
MPL
I
F
I
ER
R
5
390
Ω
1/4
W
5%
R
6
910
92
1/4
W
5%
T
h
is fiel
d effect
t r
an
sisto
r
(
FE
T) a
mp
lifier
can
b
e
R7
21
Ω
1/8
W
1%
co
nn
ecte
d to the
in
pu
t
of
t
he 7
Α
17 to
i
ncrease th
e
R
8
1
ΜΩ
1/4
W
10%
sta
b
ility
and
r
aise
t h
e
i
np
ut
i
mp
e
dance
f r
om
50
o
h
ms
to
R9
21
Ω
1/8
W
1%
over
one
mego
h
m
depe
nding
on
t
he value of R
1
.
(It
is
R
10
910
Ω
1/4
W
5%
not
r
eco
mm
en
d
e
d
t
h
at
R
1
excee
d
five
or ten
mego
hm
s
R
11
390
Ω
1/4
W
5%
du
e to p
ote
n
tial
lea
k
age pr
ob
le
ms
.)
T
he op
tional limite
r ci r
cuit,
co
n
sisti n
g of
C
R
1
α and
C
R
i
b,
s
hou
l
d be u
sed
w
h
en
t
h
ere
is
α
p
ossibility
of
exceeding
±15
volts
at
the
i
np
ut of the
FET
a
mp
lifie
r
.
T
h
is
circ
u
it
will avoi
d
p
ossi
b
le
d
amage
to
t
h
e
FE
T
.
Atte
n
uato
r
s
m
ay
b
e
a
dd
e
d
to th
is
amplifier
circ
u
it
fo
r
t
he pu
rpose
of
ob
taini
n
g
α d
esi
r
ed d
eflection
facto
r
,
r
efe
r
Q
1 α -
Q
1
b
to
t
h
e a
pp
licatio
n
for "atte
nu
ators"
.
P
a
r
ts
L
ist
:
*
R
1
1
ΜΩ
1/4
W
1/2%
R
2
470
Κ
92
1/4
W
10%
R3
560
Ω
1/4
W
5%
R
4
47
2
1/4
W
10%
*
M
ay
be
selecte
d to
suit
in
pu
t
imped
ance
re
q
uirements
.
*'O
p
tional
I
NPU
T
R
1
1
Μ
-15
V
+15
V
+15
V
op
tional
Ι
Ι
`~
D1A
D1
B
R
5
ει
L
-
t
Ι
QlA
ς
3
Τ
R
2
Ι
R4
Fig
.
3
.
FE
T
Amp
lifier
.
REV
.
FEB
1974
Ci
.005
μ
F
ce
r
20%
500
V
C2
1
.8
pF
ce
r
20%
500
V
C3
22
μF
elect
20%
15
V
C4
.001
μ
F
ce
r
20%
500
V
C5
22
μ
F
elect
20%
15
V
**D1
a
-D1b
D
u
al
d
io
d
e
F
SA1480
availa
b
le
from Te
k
t r
o
n
ix,
Inc
.,
o
rd
e r
pa
r
t
nu
m
b
e
r
152-0321-00
.
Ν
channel
D
u
al
F
ΕΤ 2
Ν
4416
a
v
aila
b
le
fro
m
Te
k
tro
n
ix,
Inc
.,
or
d
e
r
p
a
r
t
nu
m
b
er
151-1031-00
.
R
7
C5
R6
910
To
7
Α
17
in
put
R
10
ATT
ENU
ATO
R
S
(
U
se
wit
h
FE
T
Am
p
lifier)
In
so
m
e
cases
w
h
ere
the
sensitivity
of
the 7
Α
17
is
too
great,
atte
nuato
r s
of
t
h
e
ty
pe
s
h
own
in
F
ig
.
4
m
ay
be
a
dd
e
d
.
T
h
ese
are
h
ig
h imped
ance
attenuators
and
s
hou
l
d
be u
se
d with α
h
ig
h
i
npu
t
i
mp
e
d
a
nce
am
p
lifier,
r
efe
r
to
t
he
FET
A
mp
lifier
in t
h
is
sectio
n
.
C2
is
α va
r
iable
capacito
r
u
sed
to
n
o
rm
alize
t
h
e
Input to app
roximately
10
pF
.
F
or
t
h
ese
calculations,
C2
is
ass
u
me
d to b
e
10
pF
.
R
Σ
et
-
R2'
Ct
=
13
2
,
C
2
R
t
I
NPU
T
ν
;
F
ig
.
4
.
H
ig
h F
re
q
uency
Attenuators
.
Exam
p
le
:
Α
d
eflection
factor of
200
m
V
/
d
iv
with
R
i
n =
1
m
ego
hm
is
d
esi
r
ed
.
T
h
e
FET
a
mp
lifier
has
an
input
r
esista
n
ce
=
1
mego
h
m
= R
f e
t
50
m
V
/
d
iv
Vr
_
-Vo/V,
200
= 0.25
mV
/D
ίν
R
2'
=
1
m
ego
hm
Χ
0
.25
=
250
k
ilo
h
m
RI
=
1
m
ego
hm
-250
k
ilo
hm
=
750
k
ilo
h
m
R
2
-
250
k
ilo
hm
Χ
1
m
ego
hm
=
333
k
ί 1
ο
h
m
1
m
ego
h
m
-250
k
ilo
h
m
F
or
mu
las
:
Attenuatio
n
_
R
atio
V
r
=
V
ο
/
V
i
250
k
ilo
h
m
Χ
10
p
icofarads
C1
750
k
ilo
hm
=
3
.3
p
icofara
d
s
R
fet
--
i
np
ut r
esista
n
ce of
t
he
amplifie
r
.
R
i
n
= d
esi
r e
d
i
npu
t
resistance
at
t
h
e
I
NPU
T
connector
.
N
or
m
alizing
Con
nect α
1
kH
z squa
r
e
wave
R
2'
=
R
i
n
Χ
V
r
R
2
p
arallele
d with
R
f
et
fro
m
t
h
e
oscilloscope
CA
L
I-
BR
ATO
R
.
A
d
ju st
t
he outpu
t
of
Rt
-
R
in
-
R
2'
t
h
e
CA
L
I
BR
ATO
R
for α d
is
p
lay
of four to
six
ve
r
tical
d
ivisio
ns
.
R
Ad
ju
st
C2
for
s
quare
lea
d
ing
edge
2
=
R
2'
R
Σ
et
a
nd
flat
top
.
Gain
R
eadju
st,
if
necessary,
t
h
e
7
Α
17
Gain
co
n
trol
fo
r
pr
ope
r
sensi-
tivity
.
To
FE
T
Am
p
lifier
7
Α
17
7
Α
17
RE
ADO
U
T
E
ac
h
word
locatio
n h
as
its
own
r
ow
and
col
um
n
return
lines
.
The
top
word
locations
have α
row
return
E
ach of
t
he
oscillosco
p
es
fou
r
p
l
u
g-i
n
com
pa
r
tments
line
locate
d at Β
37
of
t
h
e
p
l
u
g-in inte
r
face
connecto
r
are
allotte
d
two
wo
rd
locatio
ns located
at
t
h
e
to
p
and
and
α
col
umn
r
eturn
li
ne located at
Α
37
.
Th
e
botto
m
b
otto
m
of
t h
e
C
R
T
sc
r
een
(see
F
ig
.
5)
.
E
ach
wo
rd
word
locatio
n
s
have
α r
ow
ret
u
rn line at
Β38
a
nd α
locatio
n
can b
e
enco
d
e
d
to
write
up
to
te
n ch
a r
acte
rs
.
colu
mn
ret
u
rn
li
n
e
at
Α
38
.
For
each
of
the ten
s
paces
available
in
α
word
location
t
her
e is
α
co
rr
es
p
on
d
i
ng
ti
m
eslot
(TS) pu
lse
.
T
he time-
slot
pu
lses
inter
r
ogate
t
h
e
readou
t e
ncoding r
esisto
rs
in
T
h
e
ti
m
eslot
pu
lses
are
always
-15
volts
in
ampli-
t
he
pl
u
g-i
n
s
.
T
he r
es
u
lting
info
rmation
is
ret
urned to
t
he
tu
de
.
T
h
erefore
t
h
e
cu
rre
n
t
flowing
f r
o
m
t
h
e ti
m
eslot
oscillosco
p
e read
out
system
as
vario
u
s
row
an
d
col
u
m
n
lines
t
hr
o
ugh
t
he p
l
u
g-i
n en
coding
resistors
into
t
h
e
row
cu
r r e
n
ts
.
T
h
ese
r
ow
a
nd
col
umn
cu
rr
en
ts select
t
he
a
nd
column
ret
urn
lines
is
α
d
irect
resu
lt
of
t
he value
ch
aracte
rs
or ope
r
atio
n
s
f
r
o
m
t
he
m
at
r
ix
s
h
own
i
n F
ig
.
of
t
h
e
en
co
d
ing
resisto
r s
as
give
n by
O
hm
's
law
.
For
7
.
Fo
r
exa
mp
le
:
to ob
tai
n
t
he
letter
"
Α
"
t
he
r
e
mu
st
b
e
exa
mp
le
:
In
o
r
de
r
to
p
lace
th
e
letter
"
Α
" at timeslot
0
.4
mA
of
row
cu
rrent
a
nd
0
.3
mA
of
col
umn
c
urr
e
n
t
.
location
3 of
t
he top
word
locatio
n
(ci
r
cle
d
in
F
ig
.
5),
α
37
.4
k
ilo
h
m
r
esisto
r
(-15
volts/0
.4
m
A)
m
u
st
b
e
Plug-in
Plug-in
Plug-in
Plug
-in
place
d b
etween
TS-3
a
nd
t
h
e
row
ret
ur
n
li
ne
Β
37
and α
Compartment
Com
partment
Com
p
artment
Cornp
a
rtment
50
k
ilo
h
m
resisto
r
Ι
(-15
volts/0
.3
m
A)
b
etween
Τ
5-3
#1
#2
#3
#4
and
col
u
m
n
ret
urn
line
Α
37
.
R
efer
to
Ta
b
le
2 for
interface
pin
con
nections
.
TS-5
Τ
5-3
Τ
5-7
TS-1
I
Ι
I
Τ
5-9
9000
-TS-1
-
TS-2
-
Τ
$-3
-TS-4
-
TS-5
-TS-6
-TS-7
-TS-8
-TS-9
-TS-10
Bottom
To
assure
t
hat
encoding
errors
cannot
occur
w
hen
the
W
ord
Locations
Ι
enco
d
ing
load
is
heavy, α
d
io
de
should
be
p
lace
d
in
series
with
t
h
ose
encoding
resisto
r
s
t
hat
allow
0
.6
m
A
o
r
m
o
r
e
c
u
rrent
to
flow
into
t
he
row
o
r
col
u
mn
ret
u
r
n
li
nes
.
T
h
is
m
eans
t
h
at
w
hen
calc
u
lati
ng
t
he
values
for
the
enco
d
i
ng
resistors
t
he
forwar
d
voltage
drop
(
V
f)
of the
TS-1
'
TS-2
.
τε
.
Ι
d
io
de
m
u
st
be
ta
ken into
acco
un
t
; i
.e
.,
to o
b
tai
n
0
.9
MA
using
α
silicon
d
iode,
t
he typ
ical
value
of
t
he
e
n
co
d
i
ng
resistor
wo
u
l
d b
e
-15
volts
V
f/0
.9
mA
=
15
F
ig
.
5
.
R
ea
dout
W
or
d
L
ocations
an
d
Timeslot
L
ocations
.
volts-0
.6
volts/0
.9
mA
χ
16
.2
k
ί
lo
h
ms
.
Timeslot
Nu
m
be
r
C
RTSCREEN
I
n
terface
Pin
Nu
m
ber
Β
33
-
Α
33
-~
Β
32
-~
Α
32
-~
Β
31
-~
Α
31
Β
30
--~
Α
30
-~
Β
29
-
Α
29
-
TA
BLE
2
E
ncoding
R
esistors
T
he
d
iag
r
am
for
t h
e ab
ove
exam
p
le is s
h
own
in
F
ig
.
6
.
37
.4 k
To
Β
(row
return
rn
line)
from Β32
50k
ITS-3)
To
Α
37
(column
return
line)
F
ig
.
6
.
E
ncod
ing
configuration
for
letter
"
Α
"
.
for
R
owR
et
u
rn
L
ine
837
top
Column
Return
Line
Α
37
word
locations
for
RowR
eturn Line Β
38
b
ottom
Colu
m
n
R
etu
rn
L
i
n
e
Α
38
wo
rd
locations
Ι
Colu
m
n
0
1
2 3 4 5 6
7 8 9
10
Ι
0
.2
Ι
0
.3
Ι
0
.4
Ι
0
.5
Ι
0
.6
Ι
0
.7
Ι
0
.8
Ι
0
9
31
.
ROwam
e r
es
0
Ι
0
.1
0
C
u
rre
η
ί
ι
(
M
illi-
ρ
ιΙ
1
0
0
1
2 3
4 5
6 7 8 9
2
0
.1
ί
< Ι
/ +
-
+
C Δ >
3
0
.2
A
dd *
Add
* R
e
d
uce
* R
e
du
ce
*
ID
EN
TIF
Y
*
one
two
prefix
p
refix
zero
zeros
an
d
a
dd
one
zero
4
0
.3
m
μ
π
Χ
Κ
Μ
G Τ β
5
0
.4
SKIP
-
S
V
Α
IN
Ν
d 8
C
Ω
Ε
6
0
.5
U
Ν
L
Ζ
Υ Ρ
F
J
Q
D
7
0
.6
Decimal* Decimal*
Decimal
*
Decimal
*
Deci
m
al
*
p
oi
n
t
p
oi
n
t
p
oi n t
p
oint
point
location location location
location
location
#3 #4
#5 #6 #7
8
0
.7
9
0
.8
10
0
.9
A
dd
S
p
ace
In
Dis
p
lay
*
Op
eratio
n
al
ad
dr
ess
F
ig
.
7
.
Read
out
M
atrix
.
T
h
e
following
table
in
d
icates
the
typical
r
esisto
r
sp
ace)
.
T
he following
fig
u
re
sh
ows
α p
ossi
b
le
timeslot
val
u
es
r
equ
i
r e
d
to
enco
d
e s
p
ecific
currents
.
R
esistors
assig
nm
e
n
t
.
may
be rated
as
low
as
1/8
watt
.
Ti
m
eslot
111
2131
4
15161
7
1819110
R
equ
i
r e
d
R
esisto
r
Tole
r
an
ce
C
h
aracter
Τ
I
Ε
1
S
1
Τ
ls
p
acel
1
C
u
rre
nt
V
alue
0
.1
m
A
150
k
Ω
5%
ο
Timeslots
1,
2,
9
an
d
10 do
n
ot
r
equ
ire
e
ncod
i
n
g
r
esisto
r s
.
0
.2
mA
75
1<
Ω
5%
Ty
p
ical
resisto
r
values
for en
codi
n
g
are
give
n
in t
he
0
.3
m
A
50
k
Ω
5%
followi
n
g
ch
art
.
0
.4
mA
37
.4
k
Ω
1%
0
.5
mA
30
.1
k
S2
1%
T
h
e
circuit
for
"TEST
1"
is s
h
ow
n
in
F
ig
.
8
.
0
.6
m
A
24
.3
1<
2
1%
*0
.7
m
A
20
.5
k
Ω
1%
Timeslot
Ch
aracter
Row
Col
um
n
*0
.8
mA
18
.2
1<
Ω
1%
L
ocatio
n
E
nco
d
ing
En
co
d
ing
*
0
.9
m
A
16
.2
k
Ω
1%
ο
R
esisto
r
R
esisto
r
*31
.0
mA
12
k
S2
5%
ο
3
Τ
50
k
Ω
16
.2
k
Ω
*
U
sing
α
1N4152
silicon
d
io
de
4
Ε
37
.4
k
Ω
12
k
S2
5
S
37
.4
k
Ω
150
k
2
6
Τ
50
1<12
16
.2
k
2
Exa
mp
le
:
"T
E
ST
1"
is
to
b
e written
on
t
he C
RT
7
S
P
AC
E
16
.2
1<
Ω
-
scree
n
.
T
h
is
word
is
six
ch
a r
acte
rs
lo
ng
(incl
ud
ing
α
8
1
-
75
k
Ω
7
Α
17
7A17
ITS-31
Β32
(
Τ
5-4)
Α
32
ITS-511
831
50k
ΛΜι
16
.2
k
AA/'V
37
.4
k
37
.4
k
150
k
Deci
m
als
e
n
code
d dur
ing
ti
m
eslot
1
appear
b
etwee
n
timeslot locations therefore d
o
not
requ
i
r e
the use of
anot
her timeslot
location
.
Exam
p
le
:
E
nco
d
ing
"D
ECI-
M
A
L
POINT
L
OCATIO
N #4"
dur
i
ng timeslot
1
wo
u
l
d
16
.2
κ
cause α d
eci
m
al
to
a
pp
ea
r
b
etween
ti
m
eslot
4
and
ti
m
e-
slot
5
.
Β
37
16
.2
k
I
row
return
^"
line)
En
co
d
i
ng
t
he
"ID
EN
TI F
Y"
op
eration
d
ur
ing
ti
m
eslot
75k
1
will
cau
se
t h
e
entire rea
do
u
t to ch
ange
to the
wor
d
ο
~
η
^
η
Α
37
(column
IDENTIFY
.
return
line)
F
or
furt
he
r
i
n
formatio
n
concer
n
ing
t
h
e
rea
d
out
r
efe
r
2
ο
t
he
man
u al
of
any
7000
se
r
ies
m
ai
n
f
r a
m
e t
h
at
F
ig
.
8,
Encod
ing
information
for
"T
E
ST
1"
.
co
n
tains
α
readout
.
(TS-6)
Α
31
ITS-71
Β
30
(TS-8)
Α
30
50
k
B
A
ND
W
IDT
H
L
I
M
IT
ER
For low
frequ
en
cy
app
lications,
h
ig
h
fre
q
uency
n
oise
p
ro
b
lems
can
b
e re
d
uced
b
y
r
est
r
icting
t
h
e b
a
n
d
wi
d
t
h
of
t
he
7
Α
17
.
F
or
example,
w
h
en d
is
p
layi
ng α low-
frequency
sig
n al,
li
m
iting
t
he h
ig
h
fr
eque
n
cy
r
es
ponse
i
n
ma
ny
cases
will
consi
d
era
b
ly
red
uce
h
ig
h f
r e
qu
e
ncy
noise
wit
hou
t
d
isto
r
ting
t
h
e
d
esire
d
signal
.
T
h
e
filte
r
sh
own
in
F
ig
.
9
is
to
be
connecte
d
in
series
with
t
h
e
Signal
outpu
t
li
n
es
(A-11
and
B-11
on
the
con
nector)
.
Small
notc
h
es
on
t
h
e
conductive
"run
s"
lea
d
i
n
g
to
Α
-11 and Β
-11 are
p
rovide
d
as
p
ai n
ts
w
he
r
e
t
he
Signal
out
pu
t
li
n
es
may
be cu
t
to
i
n
sert
t
h
e
filter
.
T
h
e r
eadou
t
matrix
(
F
ig
.
7)
contains
bot
h
c
h
aracter
s
and op
eratio
n
s
.
T
h
e
op
eratio
n
s
are
mar
ked with an
aste
r
is
k
(")
arid
a
r
e
always
encod
e
d dur
i
ng
ti
m
eslot
1
.
Enco
d
i
ng
t
hese
op
eratio
n
s causes p
re-deter
m
i
ned
c
h
arac-
te
rs
o
r
d
eci
m
als
to appea
r in
o
r
b
etwee
n p
r e-
d
ete
rm
i
n
e
d
ti
m
eslot
locatio
n
s
.
F
o
r
exa
mp
le
:
enco
d
ing
"ADD
T
W
O
Z
ER
OS"
du
ri n
g
ti
m
eslot
1
will
cau
se
zeros to b
e
d
is
p
laye
d
in
ti
m
eslot
locatio
n s
5 a
nd
6
;
b
y
en
co
d
ing
"RE
DU
C
E
PREF
IX"
du
r
ing
ti
m
eslot
1,
t
h
e
pr
efix
t
h
at
was
p
revio
u
sly
en
co
ded
for
timeslot 7
will
be
c
hanged
;
(i
.e
.,
milli
(m) to
m
ic r
o
(
μ
))
.
50
L
2
π
_
F
c
L
L
π
F
c
C
πF
,
Χ
200
R
_
0
.5
E
XA
MPLE
:
Wh
en
Fc
e
q
uals
5
mega
h
ertz
.
L = 3.20
pH,
C
=
320
pF, and
R
=
200
o
hm
s
.
Το
collector
ι
Q220
4
9
Το
Α
11
ε
ε
To
collector
Th
is
filter
m
ay
b
e
d
esigne
d
using
t
h
e
following
Q120
To
811
fo
rmu
la
w
he
r
e
F
c
is
t
h
e
-3
dB
fre
q
ue
n
cy
in
H
e
r
tz
ι
(w
hen
wo
rk
i
ng
into
an
i
mp
e
d
ance of
50
o
hm
s
each
si
de
to
g r
ound
) .
L
is
given
in
H
enrys
;
C
is
given
i
n F
a r a
d
s
;
a
nd
R
is
give
n
in
O
h
ms
.
Fig
.
9
.
Bandwid
t
h L
imiter
.
/
