Performance Check Procedure-2225 Service
h. Use the Horizontal POSITION controls to align t. Repeat Parts r and s for the remaining
the first time marker that is 50 ns beyond the start of SECIDIV and time-mark generator setting com-
the sweep with the second vertical graticule line. binations shown in Table 4-3 under the X50
Magnified column.
i.
CHECK-Timing accuracy is within 4% (0.32
division at the tenth vertical graticule line), and
2m
Check
Sweep
Length
linearity is within 7% (0.14 division over any two of
the center eight divisions). Exclude any portion of
a. SET:
the sweep past the 50th magnified division.
SECIDIV
j.
Repeat Parts h and
i
for the remaining SECIDIV
Horizontal MODE
and time-mark generator setting combinations
shown in Table 4-3 under the
"X5 Magnified" b. Select 0.1 ms time markers from the time-
column. mark generator.
k. SET:
c. Position the start of the sweep at the first
SECIDIV
Horizontal MAG
vertical graticule line using the
~orizontal POSITION
controls.
d. CHECK-That the sweep length is between
I. Select 10-ns time markers from the time-
and
divisions.
mark generator.
m. Use the Horizontal POSITION controls to align
3.
Check COARSE and
Horizontal POSITION
the first time marker that is 50 ns beyond the start of
Range
the sweep with the second vertical graticule line.
a.
CHECK-That the start of the sweep can be
n. CHECK-Timing accuracy is within 4% (0.32
positioned to the right of the center vertical graticule
division at the tenth vertical graticule line), and
line by rotating the COARSE Horizontal POSITION
linearity is within 7% (0.14 division over any two of
control fully clockwise.
the center eight divisions). Exclude any portion of
the sweep past the 50th magnified division.
b. CHECK-That the tenth time marker can be
positioned to the lefr of the center vertical
~raticule
o. Repeat Parts m and n for the remaining
line by rotating the COARSE Horizontal
%SITION
SECIDIV and time-mark generator setting combi-
control fully counterclockwise.
nations shown in Table 4-3 under the
"~1-0 Magni-
fied" column.
c. CHECK-That the
FINE Horizontal POSITION
control can move the trace 0.4 division or more.
p. SET:
SECIDIV
Horizontal MAG
4.
Check SEClDlV Variable Range
0.5
JLS
X50
a. Select 0.5-ms time markers from the time-
mark generator.
q.
Select 10 ns time markers from the time-
mark generator. b. Set the
SECIDIV Variable control fully
counterclockwise.
r. Use the Horizontal POSITION controls to align
the first time marker that is 100 ns beyond the start c. CHECK-That the spacing between time
of the sweep with the second vertical
graticule line.
markers is two divisions or less.
s. CHECK-Timing accuracy is within
5%
(0.40
d. Return the
SECIDIV Variable knob to the CAL
division at the tenth vertical graticule line), and detent position.
linearity is within
9%
(0.18 division over any two of
the center eight divisions). Exclude any portion of e. Disconnect the test equipment from the
the sweep past the 100th magnified division.
instrument.
Scam
by
ARTEK
MEDL4
*
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