![Tektronix 80A00 Скачать руководство пользователя страница 228](http://html1.mh-extra.com/html/tektronix/80a00/80a00_technical-reference_1077946228.webp)
Electrical Sampling Modules
g.
In the Meas Setup dialog box, for
Meas2
:
Set G1 to
54%
.
Set G2 to
100%
.
h.
The Max and Min measurements are now set to include the region of
400 ps to 5 ns after the edge. The aberration speci
fi
cation over this region
is ±3%, which is ±30 m
ρ
for a 1
ρ
step. The reference level is HiRef,
from step 4 e of the setup procedure under
TDR-System Step Response
Aberrations (80E08B and 80E10B)
.
i.
Calculate the peak aberrations in percent using the formulas (with Max,
Min, and HiRef in mr, not r):
Positive aberration (%) = (Max – HiRef) * 0.1.
Negative aberration (%) = (Min – HiRef) * 0.1.
For example: if Max = +11 m
ρ
and HiRef = –5 m
ρ
,
positive aberration (%) = (+11 –(–)) * 0.1 = +1.6
j.
Check that the aberrations calculated in step i for the 400 ps to 5 ns region
after the edge are within ±3%. If recording data on the Test Record, enter
the largest (positive or negative) value.
3.
Check the range >5ns after the edge (aberrations within ±1%).
a.
Change the Horizontal Scale to
10 ns/div
.
b.
Adjust Horizontal Position so waveform rising edge is at the second
vertical graticule (assuming that
fi
rst graticule is the left edge of display).
c.
In the Meas Setup dialog box for
Meas2
, set Gate G1 to
15%
.
d.
In the Meas Setup dialog box for
Meas1
, set Gate G1 to
15%
.
e.
The Max and Min measurements are now set to include the region of
5 ns to 90 ns after the edge. The aberration speci
fi
cation over this region
is ±1%, which is ±10 m
ρ
for a 1
ρ
step. The reference level is HiRef,
from step 4 e of the setup procedure under
TDR-System Step Response
Aberrations (80E08B and 80E10B)
.
f.
The Max and Min measurements are now set to include the region of
250 ps to 20 ps before the edge. The aberration speci
fi
cation over this
region is ±1%, which is ±10 m
ρ
for a 1
ρ
step. Since the reference is –1
ρ
, the Max and Min values should be within –1.010 to –0.990
ρ
to meet
the ±1% speci
fi
cation.
g.
Calculate and take down for later use the peak aberrations in percent using
the formulas (with Max and Min in m
ρ
units, not
ρ
):
Positive aberration (%) = (1000+Max) * 0.1.
Negative aberration (%) = (1000+Min) * 0.1.
210
DSA8300 Performance Veri
fi
cation
Содержание 80A00
Страница 2: ......
Страница 6: ......
Страница 16: ...Important safety information x DSA8300 Performance Verification ...
Страница 213: ...Electrical Sampling Modules Figure 21 Setup to measure Power in DSA8300 Performance Verification 195 ...