EXFO iOLM - Инструкция (Страница 175)

Интеллектуальный рефлектометр для тестирования оптоволоконных линий 169
A Технические характеристики
FTB-720
В
АЖНО
!
Следующие технические характеристики могут быть изменены
без уведомления. Информация, содержащаяся в данном
разделе, носит справочный характер. Обновленные сведения о
технических характеристиках изделия см. на веб-сайте по EXFO
адресуwww.exfo.com.
TECHNICAL SPECIFICATIONS
Wavelength (nm) b 850 ± 20, 1300 ± 20, 1310 ± 20, 1550 ± 20, 1625 ± 15 (filtered)
Dynamic range (dB) c, d 27, 26, 36, 34, 34
Event dead zone (m) e 0.8
Attenuation dead zone (m) e 4, 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
Pulse width (ns)
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 i
Linearity (dB/dB) b ±0.03
Loss threshold (dB) 0.01
Loss resolution (dB) 0.001
Sampling resolution (m)
Multimode: 0.04 to 2.5
Singlemode: 0.04 to 5
Sampling points Up to 256 000
Distance uncertainty (m) g ±(0.75 + 0.0025 % x distance + sampling resolution)
Measurement time User-defined (60 min. maximum)
Typical real-time refresh (Hz) 3
Stable source output power (dBm) h –3 (1300 nm), –7 (1550 nm)
GENERAL SPECIFICATIONS
Size (H x W x D) 130 mm x 36 mm x 252 mm (5 1 / 8 in x 1 7 / 16 in x 9 15 / 16 in)
Weight 0.65 kg (1.4 lb)
Temperature
Operating
Storage 0 °C to 50 °C (32 °F to 122 °F)
–40 °C to 70 °C (–40 °F to 158 °F)
Relative humidity 0% to 95% non-condensing
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.