Tektronix SC 502, Instruction Manual

Page: 45 / 127

•
Calibration
Procedure--SC 502
Performance Check
Table 4-1 (cont)
DescrlpUon
Performance Requirement.
Termi nation
Impedance,
600
0;
accuracy,
withi n 2%;
connectors,
bnc.
DC voltmeter
0--200
v, accuracy, 0. 1%.
Plug-in
extension
l OX attenuator
50 0.
•
Requlr
..
TM SOO-aert
..
power mOdule.
Preliminary Control Settings
CH 1
VO LTS/DIV 1
CAL
cw (detent)
DC-GN D-AC
GND
CH
2
VO LTS/ D I V 1
CAL
cw
(detent)
OC-GN O-AC
GNO
SECO N D S/ D I V
. 2 m
PU LL X10 HORIZ MAG- p
u
s
hed in-cw
CAL
(detent)
TRIGG ERI NG
AUTO i n
COUPL
DC
( al l
buttons out)
SOURCE
CH 1
SLOPE +
LEVEL
.... midrange
MOD E CH
1
INTEN normal
brightness
FOCUS
sharp trace
POSITION (vertical )
CH
1
- midrange
C
H 2
-
m i
d
r
a
n
ge
POSITION
( horizontal) ... midrange
SINGLE SWP
out
1. Check the
Vertical Deflection
Accuracy (+15° C
To
+35° C)
DC-GNO-AC
DC
VOL
TS/DIV (CH
1
and
CH 2) 20
a. Connect the cali bration generator to the CH 1 input
connector through a 50 0 coaxi al cable.
"'2
Appflcatlons
Low frequency
response.
Power suppl y
checks.
All
steps.
Vertical frequency
response.
Example
Tektroni x part
no.
01 1 - 0092-00.
TEKTRONI X OM SO l A.
Tektronix part no.
067-0645-02.
Tektronix
part no.
01 1 -ooS�02.
b.
Adj ust the
generator vari able control until exactly
five graticule
divisions are
displayed
on
the crt.
c.
C
h e
c
k
-
t h a t
the readout
error
is less
than
2.0%.
d.
Check-readout
error for the fol l owi ng settings
listed
i n
Table 4-2.
NO TE
When checking the
deflection accuracy at an am­
bient temperature range of
0° C to
+500
C,
derate the
accuracy
by
an
additional
1.0%.
Table
4-2
VERTICAL
DEFLECTION ACCURACY
AND
TOLERANCE
Generator
VOLTs/DIV
Display
Tolerance
2 . 0%
20 V
2. 0%
1
2 V
. 1
.S
V
2.0%
2.0%
2.0%
10
m
SO mV
20 mV
2 m
1 0 mV
1 m
5 mV 5 5. 0%
REV 0 APR 1980