--
g.
Set:
VERTICAL MODE
CH
2
A&B
INT
CH
2
h.
Move the cable from the
CH
1
OR
X input connector
to the
CH
2
OR
Y input connector.
i.
Repeat part
f.
j.
Disconnect the test equipment from the instrument.
3. Check External Triggering
a.
Set:
VERTICAL MODE
CH
1 VOL TS/DIV
HORIZONTAL MODE
A SEC/DIV
HF
REJECT
A&BINT
A SOURCE
CH
1
5
mv
A
0.1
µS
OFF
CH
1
EXT
b.
Connect the leveled sine-wave generator output via
a
50
n cable, a 50 n termination,
and
a dual-input coupler
to both the
CH
1
OR
X
and
EXT
INPUT connectors.
c.
Set the leveled sine-wave generator output voltage
to
40
mV
and
the frequency to 1 O MHz.
d.
CHECK-Stable
display
can
be
obtained
by
adjust-
ing
the A
TRIGGER
LEVEL control for
each
switch combi-
nation given
in
Table
A-7.
e.
Set:
CH
1 VOL TS/DIV
X10
Magnifier
50
mV
On
(knob out)
f.
Set the generator output voltage to 120
mV
and
the
frequency to
60
MHz.
g.
Repeat part
d.
h.
Set the generator output voltage to 150
mV
and
the
frequency to 100 MHz.
i.
Repeat part
d.
Appendix
A-2230
Operators
4.
Check External Trigger Ranges
a.
Set:
CH
1 VOL TS/DIV
A SEC/DIV
X1
O Magnifier
A TRIGGER SLOPE
A TRIGGER Mode
0.5 V
20
µS
Off (knob
in)
OUT
NORM
b.
Set the generator to produce a
50
kHz,
6.4-division
display.
c.
CHECK-Display
is
triggered along the entire posi-
tive slope of the waveform
as
the A TRIGGER LEVEL
control
is
rotated.
d.
CHECK-Display
is
not triggered
(no
trace) at either
extreme of rotation.
e.
Set the A TRIGGER SLOPE button to
IN.
f.
CHECK-Display
is
triggered along the entire nega-
tive slope of the waveform
as
the A TRIGGER LEVEL
control
is
rotated.
g.
CHECK-Display
is
not triggered
(no
trace) at either
extreme of rotation.
5. Check Single Sweep Operation
a.
Adjust the A TRIGGER LEVEL control to obtain a
stable display.
b.
Set:
Channel
1 AC-GND-DC
A SOURCE
GND
INT
c.
Press
in
the SGL SWP button.
The
READY
LED
should illuminate
and
remain
on.
d.
Set the Channel 1 AC-GND-DC switch to
DC.
NOTE
The
A INTENSITY control may require adjustment to
observe the single-sweep trace.
A-19