Tektronix 2213 - Page 69

A djustment Procedure-2213
Service
Equi p ment R eq uire d (see Table
4-1)
L
eveled Sine-Wave Generator (Item 2)
Time-Mark Generator (Item 3)
50- Ω BNC Cable (Item 4)
50- Ω BNC Termination (Item 5)
V ariable Autotransformer (Item 10)
Digital V oltmeter (Item 11)
Test Oscilloscope and 1 Χ P robe (Item
12)
DC
V oltmeter (Item
13)
Screwdriver (Item 14)
see
B efo re applying p owe r to t he 2213, ma k e t h e i n itial
co n t r ol settings Connect t h e 2213 to
an
app r op riate
p ower so u rce t h roug h
α
variable
autotra
n
sforme
r ,
adjusted fo r
an
out p ut
of
115 V .
Apply
power
to
bot h t he instrument
a nd
t h e test eq u ipme n
t
an d
allow α 20-mi nu te warm-up perio d before com-
menci n g t he a d justments a nd ch ec ks .
5- 4
P
O
WER S UPPL Y A N D
C
R T DIS
PL AY
ΝΟΤΕ
at t
h e
bac kο
f
t
h
is ma
nu
al for location of test poi n ts an da dju stments .
PR OC E D URE STEP
S
1 . Check/A d just P ower S upply DC L evels and
R ipple (R946an d R 952)
ΝΟΤΕ
R eview t he informatio n at t he begi nn i n g of t h e Ad j ust-
ment P roce d urebefor e starting t h is ste p .
α . R emove the H igh-Voltage shield (see the "High-
Voltage Shield" removal p rocedure in Section 6) if the
instrument has the Current L imit board (A19) . If the
instrument h as the
P
reregulator board ( Α 18), r emove the
protective shield on the bottom of the M ain board (A10) to
access the test point p ads .
W
A RN
I N
G
To avoi d elect
r
ic
s h
oc
k and i n
st
ru
me
n t d
amage
w h
e
n
c
h
ec k
i n g eit h
er
t h
e
H ead R oom Voltage o r t h
e
P
reregulator Outp
u
t Voltage, use a digital voltmeter
t h
at is isolated
from g r o un d, since t h
e
Inverte r powe r-
s
u p p ly circu ίt η commo n is at li ne potential .
b . Connect the digital
voltmeter
low lead to common
( ΤΡ 934)
.
If the instrument
h
as the
Current L
imit board (Al 9),
connect
the volts
lead
to
ΤΡ 952 . If the instrument h
as
the
P reregulator board (Al 8), connect
the volts
lead to
ΤΡ
940 .
ε . C HECK-Reading is +4 .2 V to +4
.4
V for instru-
ments
h
aving the Current
L
imit board . R eading is 41
V
to
44 V for instruments
h aving
the
P
reregulator board .
If the
r eading is
within t hese limits, skip to
part
e .
REV NOV 1982
I N ITIAL CO N T R O L S ETTI N GS
C RT
A UTO INTENSITY As d esired
AUTO F OCUS B est focused display
V ertical (both)
P OSITION Midrange
VERTICAL MODE CH 1
V
OLTS/DIV 0 .1 V
VOLTS/DIV Variable CAL d etent
AC-GND-DC GND
H orizontal
P OSITION Mi d range
H ORIZONTAL
MODE -NO DLY
SEC/D
1 V
5μ s
SEC/DIV
Variable
CAL
d etent
Χ
10
M agnifier
Off
(knob in)
Trigger
V
ARHOLDOFF NOR M
T RIGGER MODE TV FIELD
TRIGGER S LOPE J
T RIGGER LEVEL Midrange
ΙΝΤ VERT M ODE
SOURCE ΙΝΤ