The FTBx-735D is the OTDR of choice for field technicians who need a high-resolution tool for metro network testing and splitter characterization in PON FTTx/MDU applications. It is optimized for the rollout and troubleshooting of metro/core and FTTx networks.
The FTBx-735D OTDR is designed to support high port-count splitters (up to 1x128) and point-to-point (P2P) testing up to 144 km, thanks to its dynamic range of up to 42 dB. Its advanced features, including live fiber testing and short dead zones, make it ideal for precise fault location.
The FTBx-735D advantages
Dynamic range up to 42 dB for distances up to 144 km in point-to-point (P2P) networks
Supports high port count PON splitters (up to 1x128)
Live fiber testing for real-time network monitoring
Short dead zones:
Event dead zone (EDZ): 0.5 m
Attenuation dead zone (ADZ): 2.0 m
PON dead zone: 25 m
Single port for in-service troubleshooting with optional in-line 1490/1550 nm PON power meter
iOLM-ready with one-touch multiple acquisitions and visually clear go/no-go results
FTTx/MDU testing within PON networks
Metro and core network testing (P2P)
Manufacturing automation
Wavelengths (nm):
1310 ± 20 / 1550 ± 20 / 1625 ± 10 / 1650 ± 5
Live Wavelength (nm):
1650 nm: bandpass 1650 nm ± 7 nm
Isolation >50 dB out of 1650 nm ± 10 nm
Dynamic Range (dB):
42 / 42 / 42 / 42
Dead Zones:
Event dead zone (m): 0.5
Attenuation dead zone (m): 2.0
PON dead zone (m): 25
Distance & Resolution:
Distance range (km): 0.1 to 400
Pulse width (ns): 3 to 20,000
Linearity (dB/dB): ±0.03
Loss threshold (dB): 0.01
Loss resolution (dB): 0.001
Sampling resolution (m): 0.04 to 10
Sampling points: Up to 256,000
Distance uncertainty (m): ±(0.75 + 0.0025% × distance + sampling resolution)
Measurement time: User-defined (max: 60 minutes)
Typical real-time refresh rate (Hz): 4
Reflectance accuracy (dB): ±2
Platform Compatibility:
Windows 10 or later
Power Measurement:
Power range (dBm): –60 to 23
PON power meter wavelengths (nm): Two channels: 1490/1550 and 1490/1577
Power uncertainty (dB): ±0.5
Calibrated wavelengths (nm): 1310, 1490, 1550, 1625, 1650
Selectable wavelengths (nm): 1310, 1490, 1550, 1577, 1625, 1650, 1490/1550, 1490/1577
Selectable wavelengths (nm): 1270 to 1650 (full wavelength spectrum)
Tone detection: 270 Hz, 330 Hz, 1 kHz, 2 kHz
Output Power (dBm):
0
Modulation Options:
CW, 270 Hz, 330 Hz, 1 kHz, 2 kHz
Spec sheet