Tektronix TekRanger 2 TFS3031, Service Manual

Page: 117 / 272

Specifications – TekRanger 2 (serial nos. B052000 and above)
1–94
TFS3031 TekRanger/TekRanger 2 Service Manual
Table 1–118: Sample Density, Pulsewidth, and Range Combinations (1625 nm Singlemode, Option 12)
Pulsewidth Bandwidth
1
Overview
Sample
Overview
Interleave
Overview Measurement Spans (km)
Minimum
High
Density
(m) (MHz)
1
Sample
Spacing
2
Interleave
Factor
3
240 160 80 40 20 8 4 2 1
Density
Sample
Spacing
3200 0.1 40 m 1x D D D D D 1.25 m
2000 0.1 40 m 1x D D D D D 1.25 m
1000 0.1 40 m 1x D D D D D 1.25 m
500 0.1 20 m 1x D D D D D D 1.25 m
200 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 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 1–119: Bandwidth and Transient Characteristics (1625 nm Singlemode, Option 12)
Bandwidth (MHz) Risetime Fallslope
35 1 m = 10 ns 2.1 m/10 dB Controlled by software.
Not directly checked in
17 2 m = 21 ns 4.3 m/10 dB
Not directly checked in
the performance
5 7 m = 70 ns 14.7 m/10 dB
the performance
verification procedure.
0.1 117 m = 1170 ns 245 m/ 10 dB