Appendix
A-2230
Operators
j.
Press
in
the C1/C2 button to activate the second
cursor.
k.
Set the second cursor
on
the trailing edge of the
10th time marker at the same voltage
level
as
on
the
2nd
time marker.
I.
CHECK-The
AT
readout
is
between 0.798
ms
and
0.802
ms.
m.
Set the SAVE/CONTINUE switch to CONTINUE
(button out).
n.
Set the A SEC/DIV switch to 0.5
µS.
o.
Select
0.5
µs
time markers from the time-mark
generator.
p.
Align the
2nd
time marker with the 2nd vertical grati-
cule line using the Horizontal POSITION control.
NOTE
Allow
the
points
to
accumulate for a few seconds
before saving
the
display.
q.
Repeat parts h through
k.
NOTE
Pulses
with fast rise and fall
times
have only a few
sample points and
it
may not
be
possible to place
the
cursors
at
exactly
the
same
voltage
levels.
r.
CHECK-
The
AT
readout
is
between 3.948
µs
and
4.052
µS.
3. Check Variable Range and Sweep Separation
a.
Set:
A
and
B SEC/DIV
SEC/DIV Variable
STORE/NON STORE
0.2
ms
Fully counterclockwise
NON
STORE (button out)
b.
Select
0.5
ms
time markers from the time-mark
generator.
c.
CHECK-Time
markers are 1 division or less apart.
A-14
d.
Set:
Channel 1 AC-GND-DC
SEC/DIV Variable
HORIZONTAL MODE
GND
CAL detent
BOTH
e.
Use
the Channel 1 POSITION control to set the A
Sweep at the center horizontal graticule
line.
f.
CHECK-
The
B Sweep can
be
positioned more than
3.5
divisions above
and
below the A Sweep when the A/B
SWP
SEP
control
is
rotated fully clockwise
and
counter-
clockwise respectively.
4.
Check Delay Time Differential Accuracy
a.
Use
the Horizontal POSITION control to align the
start of the A Sweep with the 1st vertical graticule line.
b.
Set the B DELAY TIME POSITION control fully
counterclockwise.
c.
CHECK-Intensified portion of the trace starts
within 0.5 division of the start of the sweep.
d.
Rotate the B DELAY TIME POSITION control fully
clockwise.
e.
CHECK-Intensified portion of the trace
is
past the
11th vertical graticule
line.
f.
Set the A
and
B SEC/DIV switch to
0.5
µS.
g.
Repeat parts a through
e.
h.
Set:
Channel
1 AC-GND-DC
B SEC/DIV
B DELAY TIME POSITION
DC
0.05
µS
Fully
counterclockwise
i.
Select 0.5
µs
time markers from the time-mark
generator.
j. Rotate the B DELAY TIME POSITION control
so
that the top of the
2nd
time marker
on
the B Sweep
is
aligned with a selected reference vertical
line.
Record the
DLY>
readout for part
I.
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