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Tektronix 7613 User Manual

Tektronix 7613
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Circuit
Description—7613/R7613
Service
Le
Plug-In
Unit
>|
Z_Is1
R10
75K
.
(~
B33
€
T
WN
o—
>
837
R110
150
K
Row
R111
75K
Analog
A33
€
Nir
oe
‘00’
Readout
°
R120
150
K
System
Ome
O-
N-~
“7
2
Ss
T$-3
R30
150K
Invert
8.
MA—
.
N
t
R130
13K
o
N+
“~~
Uncalibrated
Ss
TS4
R140
75
K
Time-Siot
As2
©
1
Ww
Pulsos
i
R141
150
K
from
Readout
2
oe
NAO
TS-5
*
B31
<———_____—
5
A31
es
B30
é
TS-7
*
R80
50K
2188
A
A
€
T
wy
?
R180
150
K
Column
Creel
AA
ner
Analog
Data
to
R181
75K
Readout
R90
37.4
K
System
/_
89
B29
Wie
#
N
t
R190
75K
\
Vv
Nhe
o—
?
A37
TS-10
*
\
Az9
EO
*Not
used
in
standard
format.
Fig.
3-32.
Typical
encoding
scheme
for
voltage-sensing
amplifier
plug-in
unit.
Coding
shown
for
deflection
factor
of
100
microvolts.
Character
Selection
Matrix,
two
units
of
column
current
along
with
the
two
units
of
row
current
encoded
by
R10
(row
3)
indicates
that
two
zeros
should
be
added
to
the
display.
Resistor
R120
adds
one
unit
of
column
current
during
time-slot
2
and
along
with
the
one
unit
of
current
from
the
row
output,
the
Readout
System
is
instructed
to
add
an
invert
arrow
to
the
display.
R130
is
not
connected
to
the
time-slot
3
line
since
the
vertical
deflection
factors
are
calibrated.
Therefore,
there
is
no
column
current
output
during
this
time-slot
and
there
is
no
display
on
the
CRT
(see
Display-Skip
Generator
for
further
information).
During
time-slot
4,
two
units
of
column
current
are
encoded
by
R140.
There
is
no
row
current
encoded
during
this
time-slot
and
this
results
in
the
numeral
1
being
displayed
on
the
CRT.
Neither
row
nor
column
analog
data
is
encoded
during
time-slots
5,
6,
and
7
as
defined
by
the
Standard
Readout
Format.
During
time-slot
8,
two
units
of
column
current
and
three
units
of
row
current
are
encoded
by
resistors
R181
and
R80
respectively.
This
addresses
the
B
prefix
in
the
Character
Selection
Matrix.
The
final
data
output
is
provided
from
time-slot
9
by
R190
connected
to
the
column
output
and
R90
to
the
row
output.
These
resistors
encode
three
units
of
column
current
and
four
units
of
row current
to
cause
a
V
(volts)
to
be
displayed.
3-42
Time-slot
10
is
not
encoded
in
accordance
with
the
Standard
Readout
Format.
The
resultant
CRT
readout
will
be
+
100
nV.
In
the
above
example,
the
row
analog
data
was
pro-
grammed
to
define
which
row
of
the
Character
Selection
Matrix
was
addressed
to
obtain
information
in
each
time-slot.
The
column
data
changes
to
encode
the
appli-
cable
readout
data
as
the
operating
conditions
change.
For
example,
if
the
variable
control
of
the
plug-in
unit
was
activated,
R130
would
be
connected
between
time-slot
3
and
the
column
analog
data
output
lines.
This
encodes
10
units
of
column
current
(see
shaded
area
in
time-slot
3
of
the
waveform
shown
in
Fig.
3-33B).
Since
one
unit
of
row
current
is
also
encoded
during
this
time-slot
by
R30,
a
>
symbol
is
added
to
the
display.
The
CRT
readout
will
now
say
t
>
100
uV.
in
a
similar
manner,
the
other
switches
can
change
the
encoded
data
for
the
column
output
and
thereby
change
the
readout
display.
See
the
descriptions
which
follow
for
decoding
this
information.
The
column
analog
data
encoded
by
the
plug-in
can
be
modified
by
attenuator
probes
connected
to
the
input
7613

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Tektronix 7613 Specifications

General IconGeneral
BrandTektronix
Model7613
CategoryTest Equipment
LanguageEnglish

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