User Manual

FTB-720C—LAN/WAN Access OTDR
Notes
a. Typical.
b. Typical dynamic range with longest pulse and three-minute averaging at SNR = 1.
c. Typical, for reflectance from –35 dB to –55 dB in singlemode and –45 dB to –30 dB in multimode, using a 3-ns pulse.
d. Typical at 1310 nm, for reflectance at –55 dB, using a 3-ns pulse. Attenuation dead zone is 4 m typical with reflectance below –45 dB.
e. Typical, for reflectance at –35 dB, using a 3-ns pulse.
f. Non-reflective FUT, non-reflective splitter, 13-dB loss, 50-ns pulse, typical value.
g. Compliant with Encircled Flux TIA-526-14-B and IEC 61280-4-1 Ed. 2.0 using an external EF conditioner (SPSB-EF-C-30).
h. Does not include uncertainty due to fiber index.
TECHNICAL SPECIFICATIONS
Wavelength (nm)
a
850 ± 20/1300 ± 20/1310 ± 20/1550 ± 20/1625 ± 10
SM live-port built-in filter
1625 nm: highpass >1595 nm
isolation >50 dB from 1270 nm to 1585 nm
Dynamic range (dB)
b
27, 29, 36, 35, 35
Event dead zone (m)
c
Singlemode: 0.7
Multimode: 0.5
Attenuation dead zone (m)
Singlemode: 3
d
Multimode: 2.5
e
PON dead zone (m)
f
35
Distance range (km)
Multimode: 0.1 to 40
Singlemode: 0.1 to 260
Pulse width (ns)
Multimode: 3 to 1000
Singlemode: 3 to 20 000
Launch conditions
g
EF-compliant
Linearity (dB/dB) ±0.03
Loss threshold (dB) 0.01
Loss resolution (dB) 0.001
Sampling resolution (m)
Multimode: 0.04 to 5
Singlemode: 0.04 to 10
Sampling points Up to 256 000
Distance uncertainty (m)
h
±(0.75 + 0.0025 % x distance + sampling resolution)
Measurement time User-defined (maximum: 60 minutes)
Reflectance accuracy (dB)
a
±2
Typical real-time refresh (Hz) 4
All specifications valid at 23 °C ± 2 °C with an FC/APC connector, unless otherwise specified.