Tektronix 570, Руководство пользователя

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TYPE 5
70
CHARACTERISTIC-CURVE TRACER
FACTORY
CALIBRATIO N PROCEDURE
First, make a visual mechanical inspection. Check for long ends, unsoldered
joints, wire
dress, etc.
Preset all pots and trimmers to mid-range, and preset
front panel controls as follows:
RANG E DC VOLTS
DffiI"CA Tr
ON
STEPS FAMILY
STEPS SEC
START ADJUST
VERTICAL
HORIZONTAL
PEAK VO
L
T
S
SERIES LOAD
HEATER
(HEATER)
+DC
ViRrABLE (+
-DC
MAIN
POWER
TEST POWER
VOLT
METER
GRID-STEP GENERATOR
CRT DISPLAY
PLATE SWEEP
GENERATOR
OPERATING VOLTAGES
mid-range
1
20 (
ccw)
iiiI'd-range
1
PLATE
y--
PLATE
r--
100
10K
-
6.3
full left
(ccw)
100
full right (cw)
full left
(ccw)
OFF
ON
1.
CHECK RESISTANCE TO
GROUND
OF TRANSFORMER
PRIMARY
AND
ALL LOW-VOLTAGE SUPPLIES.
With
the TEST POWER
switch
Q!!,
the resistance to ground should be approximately:
Main Supply: -15Ov
+lOOv
+30Ov
+400
9K
15K
25K
25K
Floating Supply:
+40Ov over lOOK ohms
-30Ov
over
lOOK
ohms
Check transformer
primar,y
for infinite resistance to ground. Check
the
-150
27K
jack on
the Test
Panel for
27K2
between the jack
and
the -15Ov
supply.
2.
ADJUST -150 .AND
CHECK
RIPPLE AND
REGULATION.
Tum the MAIN
PCMER
switch
ON.
Set the
-
15
0
ADJ.
for exactly +100v at the
+DC
jack on
the
Test Panel.--Check the -15Ov, +100v and
300
v supplies to be
vtthin ±2%
of their rated value. Unregulated supplies
may
vary from their
rated value by
approximately
5
%
.
Maxi
mum
ripple on all supplies is as follows:
-15Ov -
-
5mv +400
--
4.5v (unregulated
)
+lOOv --
5mv +400
-
-
.5v (floating supply
)
+300v
-
- 30mv
(usually higher at 105v
-300
--
.5v (noating supply)
ac line
)
January,
1959 570-1