Tektronix 570, Manual

Page: 132 / 134

16.
ADJUST MIN.
NO.
CURVES
TO
5
CURVES AND CHECK MAXIMUM NUMBER.
Turn the
control full left
(
ccw
)
and adjust the MIN. NO.
CURVES
control for four
s
t
e
ps
(5
dots). Turn t
h
e
control
right
(cw)
and
check
to see that there
are at least
12
s t
e
p
s
before the
generator
drops
out.
With
the in the full
right position,
check
the SINGLE FAMILY b
u
tto
n
f or
a
Single
display
of steps.
17.
ADJUST
R350
AND
CHECK ALL HEATER
SWITCH POSITIONS.
P l
ug
an
accurate ac voltmeter
into
the HTR
connector
on
the Test Panel
and
adjust
the VARIABLE
HEATER control
Tor
an
output
v
olt
a
g
e
of exactly
6.3v. Set
the
INDICATION control
to HTR and adjust
R350
(mounted
on
the
INDICATION for
a
reading of on
the
meter. Connect
the
P
jack
on
the Test Panel to
�
and p
o
s
iti o
n
the spot
under the
left
hand
graticule
line.
Now connect
the P jack
to
the HTR
jack
and
o
b
se
rv
e
a horizontal
d
e
n e ction
.
Check throUgh the entire
range
of
the
HEATER
switch
keeping
th
e
VARIABLE control
set
to
100%
(±5%)
at all times, or
set
6.3 VAC
for
8.9
CM
Deflection
and
use
thi
s as a
standard.
HEATER
(
volts
) Deflections
(divisions)
1.25
.2
of
right hand
half of
trace.
8.8
18.
:2
2.0 �
2.35
:;z
4.2
1
4.7
I
g I
.d.
I
-
7.5
2
2
18.9
5
5'
!2
2
50
10
117
20
CHECK
PLATE
SWEEP PEAK VOLTS SWITCH.
9.9
5.6
6.6
1.0
8.9
5.9
6.6
1.0
8.9
5.3
8.9
5.3
1.0
9.9
1.0
8.3
With the
HORIZONTAL control
at
.5
and PLATE and. the
SERIES
LOAD
at
check all
positions
of
the
PEAK
VOLTS switch for the proper hori­
zontal denection.
.5
r
2
2
10
20
5'0
50
PEAK VOLTS Deflection
10 divisions
10
10
10
10
10
6
10
January, 1959 .570-4