Tektronix TekRanger 2 TFS3031, Руководство по обслуживанию

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Specifications – TekRanger 2 (serial nos. B052000 and above)
TFS3031 TekRanger/TekRanger 2 Service Manual
1–69
Table 1–80: Horizontal System Dead Zone (1300 nm Multimode, Option 03)
Characteristic Performance Requirement Supplemental Information
Attenuation Dead Zone
Pulse Width
100 m
50 m
20 m
10 m
5 m
1 m
typical:
130 m
70 m
35 m
30 m 16 m
10 m
15 m 8 m
Attenuation dead zone is defined
as the distance between the initial
and final points, where the
backscatter level is disrupted
beyond ±0.5 dB due to
encountering a single reflective
event.
Based on reflective event with no
greater than -40 dB reflectance.
Based on 62.5
µ
m, 0.28 NA GI
fiber.
Event Dead Zone
Pulse Width
100 m
50 m
20 m
10 m
5 m
1 m
typical:
110 m
50 m
25 m
15 m 12 m
6 m
7 m 3.5 m
Event dead zone is defined as the
distance between the initial and
final points, where the reflected
pulse amplitude is -1.5 dB down
from its peak value.
Table 1–81: Horizontal System Distance Span and Range (1300 nm Multimode, Option 03)
Characteristic Performance Requirement Supplemental Information
Distance Span (Manual Mode)
Pulse width
100 m
50 m
20 m
10 m
5 m
1 m
40 km
40 km
20 km
10 km
5 km
1 km
Distance span is defined as the
length of the data acquisition
window for a single segment
acquisition in overview mode.
Span is determined by the sample
spacing and the number of
samples possible in the acquisition
window.
Controlled by system software and
not directly checked in the
performance verification
procedure.