Tektronix TekRanger 2 TFS3031, Руководство по обслуживанию

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Specifications – TekRanger (serial nos. below B052000)
1–20
TFS3031 TekRanger/TekRanger 2 Service Manual
Table 1–10: Horizontal System Distance Span and Range (850 nm Multimode, Options 01 and 03)
Characteristic Performance Requirement Supplemental Information
Distance Span (Manual Mode)
Pulse Width
10 m
5 m
1 m
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.
Table 1–11: System Measurement Accuracy (850 nm Multimode, Options 01 and 03)
Characteristic Performance Requirement Supplemental Information
Distance ±5.0 m Verified on the TFS3031 Distance
Accuracy Test Fixture on every
instrument built in Manufacturing
and on instruments that are
repaired in Service.
Intellitrace only.
Does not take into account errors
in index of refraction and cabling
factor.
Table 1–12: Sample Density, Pulsewidth, and Range Combinations (850 nm Multimode, Options 01 and 03)
Pulse
Width
Bandwidth
Overview
Sample
Overview
Interleave
Overview Measurement Spans (km)
Minimum
High
Density
Width
(m)
(MHz)
1
Sample
Spacing
2
Interleave
Factor
3
10 4 2 1
Density
Sample
Spacing
10 20 2.5 m 4x D D D D 1.25 m
5 20 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 pulse width resolution. The minimum bandwidth is
given by
b +
0.35
Ă (
)Ă
Ă 10Ă ń
Note 2: Sample spacing is chosen to obtain four or five data points on pulse.
Note 3: Interleave factor is based on a 10 MHz sampling rate.
Table 1–13: Bandwidth and Transient Characteristics (850 nm Multimode, Options 01 and 03)
Bandwidth (MHz) Risetime Falltime
35 1 m = 10 ns 1 m/10 dB
20 1.75 m = 17.5 ns 1.75 m/10 dB