EXFO FTB-700 for FTB-1 - Инструкция (Страница 331)

OTDR 321
A Технические характеристики
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TECHNICAL SPECIFICATIONS
FTB-7200D FTB-720 (Preliminary)
Wavelength (nm) b 850 ± 20, 1300 ± 20, 1310 ± 20, 1550 ± 20 850 ± 20, 1300 ± 20, 1310 ± 20, 1550 ± 20, 1625 ± 15 (filtered)
Dynamic range (dB) c, d 27, 26, 36, 34 26, 25, 35, 32, 33
Event dead zone (m) e 1 0.8
Attenuation dead zone (m) f 3, 4, 4.5, 5 3.5, 4.5, 5, 5, 5
Distance range (km)
Multimode: 0.1, 0.3, 0.5, 1.3, 2.5, 5, 10, 20, 40
Singlemode: 1.25, 2.5, 5, 10, 20, 40, 80, 160, 260 Multimode: 0.1, 0.3, 0.5, 1.3, 2.5, 5, 10, 20, 40
Singlemode: 1.25, 2.5, 5, 10, 20, 40, 80, 160, 260
Pulse width (ns)
Multimode: 5, 10, 30, 100, 275, 1000
Singlemode: 5, 10, 30, 100, 275, 1000, 2500, 10 000, 20 000 Multimode: 5, 10, 30, 50, 100, 275, 500, 1000
Singlemode: 5, 10, 30, 50, 100, 275, 500, 1000, 2500, 10 000, 20 000
Launch conditions f Class CPR 1 or 2 Class CPR 1 or 2 i
Linearity (dB/dB) ±0.03 ±0.03
Loss threshold (dB) 0.01 0.01
Loss resolution (dB) 0.001 0.001
Sampling resolution (m)
Multimode: 0.04 to 2.5
Singlemode: 0.04 to 5 Multimode: 0.04 to 2.5
Singlemode: 0.04 to 5
Sampling points Up to 128 000 Up to 256 000
Distance uncertainty (m) g ±(0.75 + 0.0025 % x distance + sampling resolution) ±(0.75 + 0.0025 % x distance + sampling resolution)
Measurement time User-defined (60 min. maximum) User-defined (60 min. maximum)
Typical real-time refresh (Hz) 3 3
Stable source output
power (dBm)
h
–1.5 (1300 nm), –7 (1550 nm) –2.5 (1300 nm), –7 (1550 nm)
Visual fault locator (optional) b
Laser, 650 nm ± 10 nm
CW, P
out
in 62.5/125 μm: 1.5 dBm (1.4 mW)
N/A
NOTES
a. All specifications valid at 23 °C ± 2 °C with an FC/PC connector, unless otherwise specified; APC connector for FTB-720 singlemode model.
b. Typical.
c. Typical dynamic range with longest pulse and three-minute averaging at SNR = 1.
d. Multimode dynamic range is specified for 62.5 μm fiber; a 3 dB reduction is seen when testing 50 μm fiber.
e. Typical dead zone for multimode reflectance below –35 dB and singlemode reflectance below –45 dB, using a 5 ns pulse.
f. For multimode port, controlled launch conditions allow 50 μm and 62.5 μm multimode fiber testing.
g. Does not include uncertainty due to fiber index.
h. Typical output power is given at 1300 nm for multimode output and 1550 nm for singlemode output.
i. Under improvement to achieve better conditions.
SPECIFICATIONS a