Tektronix T912 - Page 14

Operating
Instructions—
T912
iNTEG—
When
held
down,
stores
repetitive
signals
too
fast to
store
normally
by
allowing
a
charge
to
build
up
on
the
crt
storage
target
before
the
signal is
stored.
PROBE
ADJ—
Provides
a
square-wave
output
of
^
approximately
0,5
V
(negative-going
with
respect
to
ground)
at
approximately
1
kHz,
for
compensating
voltage
probes.
ENHANCE
LEVEL—
Increases
the
stored
writing
rate
to
at
least
250
cm/s.
Automatically
switches
on
in
SINGLE
SWP.
Internal
graticule
—
Eliminates
parallax.
Risetime
amplitude
and
measurement
points
are
indicated
at
the
left
edge
of
the
graticule.
ON-OFF—
Push-push
switch
turns
the
instrument
power
on
(button
in)
and
off
(button
out).
(In
some
versions
this
switch
is
labeled
POWER.)
POWER—
Indicator
lamp
lights
when
ON-OFF
but-
V
ton
is
depressed
to
ON
(in)
position
and
applied
power
input
voltage
does
not
vary
more
than
about
1
0%
from
the
value
indicated
by
the
1
20 V/240
V
and
HI/LO
voltage
selector
switch
settings.
When
applied
power
input
voltage
varies
more
than
about
10%
(either
high
or
low)
from
the
selected
value,
the
lamp
will
blink.
(In
some
versions
this
lamp
is
labeled
ON.)
Left
Side
of
Cabinet
(Fig.
2-2)
®
ASTiG—
Screwdriver
adjustment
used
with
FOCUS
control
to
obtain
a
well-defined
display.
Requires
little
or
no
adjustment
once
set.
TR
ROT
—
Trace
rotation
screwdriver
adjustment.
Aligns
trace
with
the
horizontal
graticule
lines.
2-2
REV. A
APR
1977