4100 Series B OTDR Module E4126B 1310/1550 nm Dual-Wavelength Singlemode OTDR Module for T-BERD/MTS and OneAdvisor Platforms

Dual-wavelength 1310/1550 nm 4100 B OTDR module with 42/40 dB dynamic range for T-BERD/MTS-2000, -4000 V2, -5800, OneAdvisor 800 and FTH-9000 platforms.

Module variant: 4100 B
Laser safety class: Class 1 - IEC 60825-1:2014
Sampling points: Up to 256,000
Sampling resolution: 4 cm min

Datasheet

Overview

The VIAVI E4126B is the 4100 Series B OTDR module with 1310 nm and 1550 nm test wavelengths, ordered as E4126B-PC or E4126B-APC depending on the test port adapter. It is a field-swappable module for the T-BERD/MTS-2000, T-BERD/MTS-4000 V2, T-BERD/MTS-5800, OneAdvisor 800 and FTH-9000 platforms, and is used to install, turn up and troubleshoot optical networks including data center interconnection, metro, long-haul, FTTx/access and point-to-multipoint passive optical networks.

The 4100 B variant offers 42 dB RMS dynamic range at 1310 nm and 40 dB at 1550 nm, up to 256,000 acquisition points, a 0.65 m event dead zone and a 3 m attenuation dead zone. Distance display range extends from 0.1 up to 260 km. Live wavelength isolation of more than 45 dB and permanent live traffic detection protect transmission equipment and measurement quality when testing in the presence of live signals.

Light source and power meter

An integrated light source is available on the OTDR port, delivering -3.5 dBm in CW mode with 270 Hz, 330 Hz, 1 kHz and 2 kHz tone modulation and an auto-wavelength mode for use with VIAVI power meters. An in-line broadband power meter (hardware option E41OTDRPM) adds power measurement on the same port.

Software and workflow

Results are presented through SmartLink Mapper (SLM), which identifies passive elements in the trace and shows them as icons on a link map with pass/fail information, with direct toggling between SmartLink, Trace and Table views. SmartTEST guides the operator through setup, test, review and reporting steps. Optional mainframe software adds TrueBIDIR on-board bidirectional OTDR analysis, Loopback two-fiber bidirectional testing, Cable-SLM project management for high fiber count cables and FTTH-SLM applications for PON architectures. Test Process Automation (TPA) connects the module to cloud-based job assignment and results submission.

Module portability lets the same fiber test capability move between VIAVI platforms, so existing certification tools can be combined with coax and RF, active xWDM, MPO/ribbon cable or network layer tests on the mainframe.

Key Features

Dual-wavelength 1310/1550 nm singlemode OTDR module
42 dB RMS dynamic range at 1310 nm and 40 dB at 1550 nm
Up to 256,000 acquisition points
Event dead zone 0.65 m and attenuation dead zone 3 m
Distance display range 0.1 up to 260 km
Pulse widths from 5 ns to 20 µs
Live wavelength isolation >45 dB with instantaneous automatic traffic detection
Integrated light source and optional in-line power meter on the OTDR port
SmartLink Mapper (SLM) icon-based results view with pass/fail analysis
Easy toggle between SmartLink, Trace and Table views with direct event correlation
SmartTEST assistant with four-step guided setup, testing, review and reporting
OTDR test port health check and embedded launch cable measurement
Touch gesture user interface with pinch zoom, swipe and long press control
Available in FiberComplete PRO version for automated bidirectional OTDR, IL and ORL measurements
Instant bidirectional OTDR event loss analysis TrueBIDIR (patented) with data link via the fiber under test
Automated batch testing with MPO-based multifiber switches, up to 192 ports
Cable-SLM software option for high fiber count cable projects
Consolidated reporting for all wavelengths tested
Cloud-based job assignment and instant results submission with Job Manager
Module portability between T-BERD/MTS, OneAdvisor 800 and FTH-9000 platforms
Delivered with SC/PC or SC/APC test port adapter

Specifications

OTDR

Module variant E4126B	4100 B
Laser safety class	Class 1 - IEC 60825-1:2014
Sampling points	Up to 256,000
Sampling resolution	4 cm min
Distance display range 4100 B	0.1 up to 260 Km
Distance accuracy	± (0.5 m + sampling resolution + 0.001% x distance) Excluding group index uncertainties
Attenuation linearity	± 0.03 dB/dB
Reflectance accuracy	± 2 dB
Central wavelength (1310 nm) 4100 B	1310 ± 20 nm Laser in CW and 25°C
Central wavelength (1550 nm) 4100 B	1550 ± 20 nm Laser in CW and 25°C
RMS dynamic range at 1310 nm 4100 B	42 dB One-way difference between the extrapolated backscattering level at the start of the fiber and the RMS noise level, after 3 minutes averaging
RMS dynamic range at 1550 nm 4100 B	40 dB One-way difference between the extrapolated backscattering level at the start of the fiber and the RMS noise level, after 3 minutes averaging
Pulse widths 4100 B	5 ns to 20 µs
Event dead zone 4100 B	0.65 m Measured at ±1.5 dB down from the peak of an unsaturated reflective event, using 5 ns pulse width at 1310 nm
Attenuation dead zone 4100 B	3 m Measured at ±0.5 dB down from the linear regression using a FC/UPC-type reflectance, using 5 ns pulsewidth at 1310 nm
Attenuation dead zone (PON splitter) 4100 B	45 m 4100B measured on a 16 dB loss (typical 1x32 split ratio) non-reflective splitter at 1310 nm, using 200 ns pulsewidth
Live wavelength isolation	>45 dB; 1260 to 1620 nm

Light Source

Wavelengths	1310/1550/1625 nm Series-level specification; the E4126B is a 1310/1550 nm module
Output power level	-3.5 dBm in CW mode
Modulation frequency (tone generation)	270 Hz, 330 Hz, 1 KHz, 2 KHz
Stability (8 hours)	< ± 0.1 dB After warm up time of 20 min
Auto λ mode	Yes (with VIAVI compatible power meters)

In-line Broadband Power Meter (Hardware Option)

Wavelengths E41OTDRPM	Calibrated 1310/1490/1550/1625/1650 nm; Selectable: 1310 to 1650 nm in 1 nm step Hardware option E41OTDRPM
Power range E41OTDRPM	-3 to -55 dBm Hardware option E41OTDRPM
Accuracy E41OTDRPM	± 0.5 dB At calibrated wavelengths, at -30 dBm, excluding connection uncertainty

General

Size (HxWxD)	134 x 128 x 40 mm (5.28 x 5.04 x 1.58 in)
Weight	0.4 kg (0.88 lb)
Operating temperature	0°C to 50°C (+32°F to 122°F) Additional temperature restrictions may apply based on the mainframe used
Storage temperature	-20°C to +60°C (-4°F to 140°F) Datasheet prints the lower limit as -20°F; the Fahrenheit equivalent -4°F indicates -20°C
Humidity (noncondensing)	5 to 95%
Platform compatibility	T-BERD/MTS-2000, -4000 V2, -5800, OneAdvisor 800 and FTH-9000

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Applications

Construction, commissioning and troubleshooting of metro and long-haul networks
Tier-2 certification and maintenance of enterprise and data center networks
Data center interconnection
High fiber count/ribbon cables with automated MPO switching
Characterization and troubleshooting of FTTA fiber cables (macro cell towers, wireless backhaul, distributed antenna systems, cloud radio access)
Certification and troubleshooting of FTTH-PON networks through splitters
Wireless/5G x-haul and FTTx/access networks
Point-to-point solid core fiber links
Live network troubleshooting with in-service testing

Included

SC/PC or SC/APC test port adapter (per ordered -PC/-APC version)

Options & Accessories

Option	Description
E4126B-PC	4100 B OTDR – 1310/1550 nm – PC — Module delivered with SC/PC test port adapter
E4126B-APC	4100 B OTDR – 1310/1550 nm – APC — Module delivered with SC/APC test port adapter
E41OTDRPM	Power meter — Hardware option: in-line broadband power meter on the OTDR port
E41OTDRCR	OTDR module calibration report
EUSCADS	SC/PC (Blue) test port adapter – screw type
EUSCADS-APC	SC/APC (Green) test port adapter – screw type
EULCADS	LC/PC (Blue) test port adapter – screw type
EULCADS-APC	LC/APC (Green) test port adapter – screw type
EUFCADS	FC test port adapter – screw type
ESCREWDRIVER-SENKO	Screwdrivers kit for screw type test port adapters
ETRUEBIDIR-FCOMP-PRO	TrueBIDIR: Bidirectional OTDR Acquisition, on board real time analysis and averaging - All Networks — Software option installed on the mainframe; upgrade version ETRUEBIDIR-FCOMP-PRO-UPG. Not compatible with T-BERD/MTS-5800
ELOOPBACK-FCOMP-PRO	Loopback: Bidirectional 2 fibers OTDR Acquisition, on board real time analysis and averaging - Access Networks — Software option installed on the mainframe; upgrade version ELOOPBACK-FCOMP-PRO-UPG. Not compatible with T-BERD/MTS-5800
ECABLESLM	Cable-SLM: Project cable management, up to 10,000 fibers — Software option installed on the mainframe; upgrade version ECABLESLM-UPG
EFTTHSLM-BASE	FTTH-SLM Base: Tailored OTDR App. for FTTH Networks (Basic PON Architectures) — Software option installed on the mainframe
EFTTHSLM	FTTH-SLM: Tailored OTDR App. for FTTH Networks (Advanced PON Architectures, including Unbalanced/tap couplers) — Software option installed on the mainframe