2212 Service Manual
Adjusbnent Procedures
c. Adjust: X10 Mag gain (R647) for 1 marker
per
division.
d.
Set: HORIZONTAL
MODE
to MAG X50
e.
Adjust: X50 Mag gain (R627) for 5 divisions between the
magnified markers.
Adjust High Speed Timing (C710, C760)
Procedure
a.
Set:
CH1
VOLTS/DIV ...............
..
AC-GND-DC
.......................
..
SEC/DIV .............................
..
Horizontal MAG ................ .
Trigger SOURCE ................ .
0.1 V,
AC
50
ns
X10
EXT.
b.
Connect 10
ns
time markers from the time-mark generator via a
50 n
BNC
coaxial cable and a 50 n
BNC
termination to
CH
1
OR
X
input
connector.
c.
Connect the time marker trigger
out
via a 50 n
BNC
coaxial cable
and
a 50 n BNC terminator to
the
EXT
OR
Z
input
connector.
d.
Adjust Trigger
LEVEL
control so that the markers are stable triggered.
e.
Adjust: 5
ns
Linearity (C710)
and
5
ns
Timing (C760) for two
divisions between each marker.
f.
Disconnect
the
test equipment from the instrument.
5-
19
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