Tektronix 2235 - INSTRUMENT COOLING; CONTROLS, CONNECTORS, AND INDICATORS; POWER, DISPLAY, AND PROBE ADJUST

O p e rati ng I n str u ctions-2235 Service
CA U TIO N
FOR
C σΝΤιΝυεσ
FIRE PRCTECTION
R EPL AC E ONL Y WIT H SPE CI F I E D
TYPEAN Ο RATED FUS E . σ
1SCO NNE CT
POW E R INPUT BEF OR E ΑΣΡιΑςιΝ G FU S E
L IN E VO L T A G E R AN
GE

FUSE 250V
9015 ΟΥΑ [

ΙΑ
SLOW
DO NOT REM O V E
COV E R . R EFER
5 E R V I[I N G TO
COAL I F I ED
ΡΕΟ S ΟΝΝ FL .
POWER
ΜΑ % WA TTS 4
σ
ΜΑΧ VA 70
F
F Ι
1
45
- 440 Η ;
POWER
CORD
L I NE
FU S E
CAUTION
TO AVOID ELECTRIC
SHOCK THE POWER
CORO
PROTECTIVE
GROUNDING CONDUC70
π 4111T
BE CONNECTED
ι t
ρυΝυ .
ιαι L AXIS INPUT
ισχα Ρσ s ιτινε
GOING
ΙΝΡυΤ O F CAE Α S ES
'-'- INTENSITY
5 VOLT Ρ - Ρ CAUSES
' 1 N
OTIC E A BLE
: ΜΟσ
U ΙΑΤΙΟΝ ΑΤ
~ N OR M A L ΙΝΤΕΝ
5
ΓΤΥ
.
°

-310V PEAK
4207-03
Figure 2-2 .
Fuse
hol
de
r
and power co rd con n ecto r .
5 .
R einstall t h
e fuse (o
r r
ep lacement fuse) and t h e fuse-
h
olde
r
cap .
I N ST RUMEN T
COO
L I N
G
Always maintain a d eq u ate instr
u
ment cooling
.
T he ve
n
ti-
lation holes on
bot
h
side of t
h
e eq ui pm e n t cabinet and on
t
h
e r ea
r p
a
n
el must remai n f r ee of o b structions .
CO N T R O L S,
CO
NNE
CTO R S, A N D I N DICATO R S
The
following d escri p tions
are
inten
d ed to familiarize t he

4 Ο FOCUS

Co n tr ol-A d justs

far

optimum

d isplay
op erator wit h t h e location, operation,
and fu
n
ction of t he

d efi n itio n .
instr ument's controls, connectors,
a
n
d
i n
dicato r s .
P O WER, DIS PL AY, A ND PR O BE AD
JU
ST
Refer to Figu r e 2-3 fo r locatio n of items 1 t h
ro u g
h
8 .
Internal Graticule-Eliminates
p arallax viewing error
betwee n t he trace an
d gratic u le
lines
. R ise-time am p li-
t ude and meas u re m ent points are
indicated at t he left
edge of t he g r atic u le .
POWER Switch--Turns instr u ment power
on
and
off .
Press in for ON ; press again for
O
FF .
Ο
Power Indicator-An LE D t h at illuminates w hen pow-
er is availa b le to t he instrument a nd t he PO W ER
switc h is set to ON ( bu tton in) .
2-2
PR
O
BE
AD JU ST Con n ector- P rov id es an approxi-
mately 0 .5 V, negative-going,
square-wave
voltage (at
a p proximately 1 kH z) that pe rm its
an
o pe r ato r to
compensate voltage pr obes an d t he check operation
o
f
t he oscilloscope vertical system . It is not i n
tended
to ve r ify t he acc u racy of t h e vertical gain o r ti m e-base
circ u itry .
BEAM F I N D Switch - Wh en h eld in, co mpr esses t h e
d isplay to wit h in t he g r aticule a r ea an d provi des α visi-
b le
viewing
i n
te n sity to ai d in locating off-scree n
dis p lays .
TR
AC
E
ROTATION Control-Screwdriver a d ju st-
me
n
t use d to align t h e crt trace wit h t h e h orizo n tal
g r aticule lines
.