Tektronix 2247A

Operator
Checks
and
Adjustments
6.
Set
the
bottom
of
the
trace
of
the
PROBE
ADJUST
square-wave
signal
to
a
convenient
horizontal
graticule
line
with
the
Vertical
POSITION
control.
Le
7.
Check
for
a
five-division
display
of
the
PROBE
ADJUST
square-wave
signal.
F
8.
Select
CH
2
VERTICAL
MODE
and
repeat
steps
6
and
7.
=
9.
Disconnect
the
probes
from
the
instrument.
:
J
Timing
Checks
The
time
measurement
cursors
may
be
used
to
check
the
horlzontal
deflec-
tion
system,
1.
Preset
Instrument
controls
and
obtain
a
baseline
trace
and
set
the
A
SEC/DIV
switch
to
0.1
ms.
Vertically
center
the
baseline
trace.
2.
Press
the
TIME
MEASUREMENTS
button
to
call
up the
Time
Measure-
ment
Mode
menu
on
the
crt
and
select
le
SEC
function
for
measuring
time
difference
by
pressing
the
Menu
Select
button
opposite
menu
label.
.
Align
the
reference
cursor
to
the
second
vertical
graticule
line
using
the
I+
OR
DELAY
control
(both
cursors
are
positioned
together).
4.
Adjust
the
-{
control
for
a
reading
of
800.0
pis
5.
Check
that
the
cursors
are
eight
divisions
apart.
6.
Press
the
CLEAR
DISPLAY
button
to
remove
the
cursors
from
the
display.
4-6
2247A
Operators