Tektronix TekRanger 2 TFS3031, Руководство по обслуживанию

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Specifications – TekRanger (serial nos. below B052000)
TFS3031 TekRanger/TekRanger 2 Service Manual
1–29
Table 1–26: Horizontal System Dead Zone (Standard 1310 nm Singlemode, Options 04 and 06)
Characteristic Performance Requirement Supplemental Information
Attenuation Dead Zone
Pulsewidth
2000 m
1000 m
500 m
100 m
50 m
20 m
10 m
5 m
1 m
Typical
2300 m
1350 m
600 m
175 m
100 m
40 m
30 m 20 m
45 m
80 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 9
µ
m, 0.1 NA SM fiber.
Event Dead Zone
Pulsewidth
2000 m
1000 m
500 m
100 m
50 m
20 m
10 m
5 m
1 m
2250 m
1200 m
700 m
115 m
65 m
30 m
20 m
8 m
<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.
Based upon reflective event with
no greater than -40 dB
reflectance.