Tektronix 570, Manual

Page: 127 / 134

CALIBRATION
b.
Connections
P lace a 9 pin test plate in the test panel. Insure
that the plate seats properly without shorting to any
solder lug under the test plate.
Insert a 6U8 into the test socket.
Make the following connections between the test
plate pin jacks and the test panel.
Pin 6
to P
�
Pin 2 t
o
B
Pin 7
to
K
()
Pin J
t
o P
�
___ ___
Pin 9 t
o
A
T
Pin 8
t
o
K
Pin 4 t
o
HTR Pin 5 t
o
HTR
c. Display of curves
Set TEST power to ON. When tube is sufficiently
warmed, set TEST P OSITION to GRID A and GRID
B and note the display of curves.
Set TEST power to off, move plate to other side of
test panel, reset TEST power to ON, and recheck for
displays.
29. RETRACE
a.
C205
With a display of GRID A curves from previous
step, set HORIZONTAL VOLTS/DIV
to
20 and 50
while
adjusting
C205 for best
min
retrace
in
both
positions.
Recheck
operation
of
SINGLE F
AMIL
Y
button with
STEPS/FAMILY full cwo
TEK 570
FCP
2-5-64
28c.
NOTES
6U8 in GRID B
HORIZONTAL VOLTS/DIY at 20
570 CALIBRATION
23