Tektronix TekRanger 2 TFS3031, Руководство по обслуживанию

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Specifications – TekRanger (serial nos. below B052000)
TFS3031 TekRanger/TekRanger 2 Service Manual
1–49
Table 1–55: Sample Density, Pulsewidth, and Range Combinations (Extended Range 1550 nm Singlemode, Option 08)
Pulsewidth Bandwidth
1
Overview
Sample
Overview
Interleave
Overview Measurement Spans (km)
Minimum
High
Density
(m) (MHz)
1
Sample
Spacing
2
Interleave
Factor
3
160 80 40 20 8 4 2 1
Density
Sample
Spacing
2000 0.3 40 m 1x D D D D 1.25 m
1000 0.3 40 m 1x D D D D D 1.25 m
500 5 20 m 1x D D D D D D 1.25 m
100 5 10 m 1x D D D D D D 1.25 m
50 5 10 m 1x D D D D D D D 1.25 m
20 17 5 m 2x D D D D D D D 1.25 m
10 17 2.5 m 4x D D D D D 1.25 m
5 17 1.25 m 8x D D D D 1.25 m
1 35 25 cm 40x D D D 25 cm
Note 1: Bandwidth is chosen based on a 3x minimum bandwidth required for pulsewidth resolution. The minimum bandwidth is
given by
b +
0.35
Ă (
)Ă
Ă 10Ă ń
Note 2: Sample spacing is chosen to obtain four data points on pulse.
Note 3: Interleave factor is based on a 10 MHz sampling rate.
Table 1–56: Bandwidth and Transient Characteristics (Extended Range 1550 nm Singlemode, Option 08)
Bandwidth (MHz) Risetime Fallslope
35 1 m = 10 ns 1.5 m/10 dB
17 2 m = 21 ns 3.7 m/10 dB
5 7 m = 70 ns 14.7 m/10 dB
0.3 117 m = 1170 ns 245 m/ 10 dB