2212 Service Manual
Performance Tests
k.
Adjust the Trigger
LEVEL
control so that the sweep starts two
divisions above the center horizontal graticule
line
and check that the
trigger readout is 0.20 V ±0.03
V.
For three divisions it
is
0.30 V ±
0.03V.
1.
Adjust the Trigger
LEVEL
control
so that
the
sweep starts one
division below
the
center horizontal graticule
line
and
check
that
the
trigger readout is - 0.10 V ±0.03
V.
For
two
divisions
it
is
- 0.20
V±
0.03 V and for three divisions - 0.30 V ± 0.03 V.
m.
Disconnect the test
equipment
from the instrument.
Step
8.
LINE
Trigger Function Check
a.
SET:
CH
2 VOLTS/DIV0.1 V (without
l0X
probe
attached)
CH
2·
AC-GND-DC
........ ......
DC
SEC/DIV .
..
..
..
..
.... ....
.. ..
.. ..
..... 5
ms
Trigger MODE..................... P-P AUTO
Trigger SOURCE ......
..
.... ..... LINE
Trigger COUPLING.............
DC
Xl,
XlO, X50 Magnify........
X1
ALT
MAGN switch............ Off
b.
Connect a 10X probe to
the
CH 2
ORY
input
connector.
c.
Attach a length of wire of
two
inches long
to
the
probe tip.
Hold
the
wire near the middle
portion
of
the
instrument
power
cord.
d.
CHECK
-That
the display
can
be triggered
on
positive-going
and negative-going slopes.
e.
Disconnect the test set
up
from
the
instrument.
4-
21