Calibration
—
Type
175
TABLE
II
A
Resistor
B
PEAK
VOLTS
RANGE
C
VERTICAL
DISPLAY
D
HORIZONTAL
DISPLAY
(V
co)
E
Horizontal
Deflection
F
Slope
0.05
ft
0-20
20
1
10
div.
1.00
0.05
ft
0-20
10
.5
10
div.
1.00
0.05
ft
0-20
5
.2
10
div.
0.80
0.05
ft
0-20
2
.1
10 div.
1.00
10
ft
0-100
1
10
9.9
div.
1.00
10ft
0-100
.5
5
10
div.
1.00
10
ft
0-20
.2
2
9.1
div.
1.00
10ft
0-20
.1
1
10
div.
1.00
10
ft
0-20
.05
.5
10
div.
1.00
10
ft
0-20
.02
.2
10
div.
1.00
10
ft
0-20
.01
.1
10
div.
1.00
10
ft
0-20
.005
.1
5
div.
2.00
SERIES
RESISTANCE
switch.
To
check
the
resistance
in
the
SERIES
RESISTANCE
switch,
proceed
as
follows:
1.
Turn
the
Type
175
off.
2.
Set
the
Transistor
Selector
switch
to
TRANSISTOR
A.
3.
Set
the
STEP
SELECTOR
switch
to
.02
VOLTS/STEP.
4.
Measure
the
resistance
between
the
E
and
B
binding
posts
of
the
TRANSISTOR A
side
of
the
Transistor
Test
Panel
at
each setting
of
the
SERIES
RESISTANCE
switch.
In each
case,
the
resistance should
be
within
5%
of
that
indicated
by
the
setting
of
the
switch.
CALIBRATION
There
are
only
four
internal
adjustments
in
the
Type
175
High-Current
Adaptor:
the ZERO
ADJ.,
the
r»-ADJ.,
ond
the
VOLTS/STEP
ADJ.
(See
Fig. 6-7). They all
perform
the
same
functions
as
the
corresponding adjustments
in
the
Type
575.
They
should
bo adjusted only
after
the
Type
575
has
been
properly calibrated.
To
properly
set
the
internal
adjustments
of
the
Type
175,
proceed
as
follows:
1. Set
the
front-panel
controls
as
follows:
HORIZONTAL
DISPLAY
(Type
175)
.1
V*.
Display
Switch
(Type
575)
REPETITIVE
POLARITY
(Type
175
Base Step
Generator
—
STEP
SELECTOR
(Type
175)
.1
VOLTS
PER
STEP
STEP
ZERO
(Type
175)
midrange
Transistor Selector
switch
TRANSISTOR
B
2.
Position
the
display
so
the
last
dot
to
the
right
is
in
the
center
of
the
graticule.
3.
Set
the
ZERO
ADJ.
adjustment
in
the
Type
175
so
that
this
dot does
not move
as
the Type
175
Base Step
Generator
POLARITY
switch is
switched
from
one
position
to
the
other.
(The
other
dots
will shift from one
side to the other
os
the
POLARITY is
switched.)
Leave
the
POLARITY switch
in
the
—
position
when
you
are
finished
with
this
step.
ZERO ADJ.
ADJ.
Fig.
6-7.
Bottom
of Typo
175,
showing
internal
adjuttmentt.
4.
Hold
the HORIZONTAL
AMPLIFIER
CALIBRATION
switch
in
the ZERO
CHECK
position,
and
position
the
dot
directly
behind
the
center
vertical graticula
line.
5.
Release
the
switch
and
set
the
zt
ADJ.
adjustments
so
that
the
last
dot
to
the
right
is
directly
behind
the
center
vertical
graticule
line.
6.
Sot
the
STEP
SELECTOR
switch
to
.5
VOLTS
PER
STEP
and repeal
steps
2
through
5
until
both the
ZERO
ADJ.
and
the
it
ADJ.
are
properly
set.
7.
Set
the
STEP SELECTOR
switch
to
.1
VOLTS
PER
STEP
and
turn
the
STEPS/FAMILY
control
on
the
Type
575 fully
clockwise.
8.
Position
the
display
of dots
so
that
it
extends
across the
graticule.
9.
Set
the
VOLTS/STEP
adjustment
on
the
Type
175
for
one
dot per
majjor
graticule division.
This adjustment
must
be
done
in
the
minus
position
of
the
POLARITY
switch.
6-8
Summary of Contents for 175
Page 4: ...VWTICM OINltAlO TRANSISTOR CUM TRACfR UB l COUlClO r hokizoniai VCKIJ O lUnK Hix M Type 575 z ...
Page 6: ...NOTES ...
Page 26: ...NOTES ...
Page 48: ...NOTES ...
Page 54: ...Recalibration Type 575 C706 Fig 5 3 Left Side View 5 6 ...
Page 56: ...NOTES ...
Page 100: ...INPUT AMPLIF1E ...
Page 104: ...TYPE 575 TRANSISTOR CURVE TRACER ...
Page 108: ...OSCILLATOR 4OOV UNREG TYPE 575 TRAN5I5TOR CURVE TRACER AB ...
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Page 119: ...Type 175 Tent S N 570 PARTS LIST CORRECTION Change to Q233 151 0137 00 2N21U8 MIO 298 1165 ...