Tektronix TekRanger 2 TFS3031, Руководство по обслуживанию

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Specifications – TekRanger 2 (serial nos. B052000 and above)
1–78
TFS3031 TekRanger/TekRanger 2 Service Manual
Table 1–95: Vertical System Measurements (Standard 1550 nm Singlemode, Option 06)
Characteristic Performance Requirement Supplemental Information
Linearity ±0.02 dB/dB typical from 15 dB to
2 dB below backscatter at front
panel; ±0.05 dB/dB from 10 dB to
1 dB below backscatter at front
panel
3Ćminute average
Measurement Accuracy
TwoĆPoint
Splice Loss
LSA Fiber Loss
±0.1 dB/dB 3Ćminute average
For events 10 dB above 98% noise
floor, 95% confidence.
Reflectance ± 4 dB maximum error, ± 2 dB
typical
NonĆclipped reflection
Meets or exceeds Bellcore
GRĆ196ĆCORE.
Table 1–96: Single-Event Distance Measurement Repeatability
1
(Standard 1550 nm Singlemode, Option 06)
Characteristic Performance Requirement
Supplemental
Information
Range from Front Panel
(dB)
0 to 1.5
1.5 to (DR
4
ć8)
(DRć8) to DR
Reflective
2
typical:
2.5 m
20 m
40 m
Nonreflective
3
typical:
2.5 m
20 m
160 m
IntelliTrace mode
1
Multiply by 0.001% of range for timebase error. These data are for a 0.5 dB event with 95% probability on a single unit.
2
Reflectance greater than -45 dB, 0.5 dB loss.
3
Reflectance less than -60 dB, 0.5 dB loss.
4
DR is the dynamic range for 2000Ćm pulse width from table 1-34. DR is the 98% dynamic range, defined as dynamic range SNR=1 minus 1.5.
Table 1–97: System Measurement Accuracy (Standard 1550 nm Singlemode, Option 06)
Characteristic Performance Requirement Supplemental Information
Distance ±10 m, ±4 m typical Measured on NIST traceable
calibration system.
Loss ±0.05 dB, ±0.01 dB typical Measured on NIST traceable
calibration system.