VIAVI 4100 Series OTDR Modules for T-BERD/MTS, OneAdvisor 800 and FTH-9000 Platforms

Plug-in OTDR modules for VIAVI test platforms with up to 45 dB dynamic range, used to install, turn up and troubleshoot fiber networks.

Size (HxWxD): 134 x 128 x 40 mm (5.28 x 5.04x 1.58 in)
Weight: 0.4 kg (0.88 lb)
Operating temperature: 0°C to 50°C (+32°F to 122°F)
Storage temperature: -20°F to + 60°C (-4°F to 140°F)

View Models Datasheet

Overview

The VIAVI 4100 Series OTDR modules are plug-in optical time domain reflectometer modules for installing, turning up and troubleshooting optical networks, including long-haul, metro, FTTx/PON, access, data center interconnect and enterprise networks. They operate in the T-BERD/MTS-2000, T-BERD/MTS-4000 V2, T-BERD/MTS-5800, OneAdvisor 800 and FTH-9000 platforms, and the modules can be moved between compatible VIAVI platforms.

The A, B and C variants cover single-mode testing with dual- or tri-wavelength configurations at 1310/1550/1625 nm or with a filtered 1650 nm wavelength for in-service troubleshooting. A single test port combines three wavelengths, so technicians can switch between construction and live-network troubleshooting without moving test ports. The Quad module combines multimode (850/1300 nm) and single-mode (1310/1550 nm) testing in one module for premises, enterprise and wireless fronthaul/backhaul networks.

Analysis and workflow

SmartLink Mapper (SLM) identifies passive optical elements in an OTDR trace and shows them as icons in a fiber link map, with SmartLink, Trace and Table views correlated to the selected event. The SmartTEST assistant guides the user through setup, testing, result review and reporting in four steps. Optional software adds TrueBIDIR on-board bidirectional OTDR analysis, Loopback testing, Cable-SLM project management for high fiber count cables and FTTH-SLM for PON architectures, including unbalanced and tap couplers.

Test process automation

Test Process Automation (TPA) is a closed-loop system that handles job assignment, test process compliance and data upload for job close-out, team progress updates and network health analytics. An OTDR test port health check and permanent live traffic detection run with each test to protect transmission equipment and keep measurements reliable.

Models in this series

Model	Description
E4126A	4100 Series A OTDR Module E4126A, 1310/1550 nm, for T-BERD/MTS and OneAdvisor Platforms Dual-wavelength 1310/1550 nm singlemode OTDR module (4100 A class) with 37 dB dynamic range, integrated light source and optional power meter.	Details →
E4136A	4100 Series A OTDR Module E4136A, 1310/1550/1625 nm Tri-Wavelength OTDR Tri-wavelength 1310/1550/1625 nm 4100 A OTDR module with up to 37 dB dynamic range for T-BERD/MTS, OneAdvisor 800 and FTH-9000 platforms.	Details →
E4126B	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.	Details →
E4138FB65-APC	4100 Series B OTDR Module E4138FB65-APC, 1310/1550/Filtered 1650 nm, APC 4100 B tri-wavelength OTDR module with 1310/1550 nm and filtered 1650 nm on a single APC test port, up to 42 dB dynamic range.	Details →
E4126C	4100 Series E4126C 4100 C Dual-Wavelength 1310/1550 nm OTDR Module High-performance 4100 C OTDR module with 1310/1550 nm wavelengths, 45 dB dynamic range and up to 400 km display range for T-BERD/MTS and OneAdvisor platforms.	Details →
E4136B	4100 Series E4136B OTDR Module, 1310/1550/1625 nm (4100 B) Tri-wavelength 4100 B OTDR module with 1310/1550/1625 nm on a single test port and up to 42 dB dynamic range for T-BERD/MTS and OneAdvisor platforms.	Details →
E4136C	4100 Series E4136C OTDR Module (4100 C) 1310/1550/1625 nm for T-BERD/MTS and OneAdvisor Platforms Tri-wavelength 1310/1550/1625 nm 4100 C OTDR module with up to 45 dB dynamic range for VIAVI T-BERD/MTS and OneAdvisor 800 platforms.	Details →
E4118FB65-APC	4100 Series OTDR Module E4118FB65-APC Filtered 1650 nm In-Service OTDR Module (4100 B) VIAVI 4100 B OTDR module with a single filtered 1650 nm wavelength for in-service troubleshooting of live optical networks.	Details →
E4138FC65-APC	4100 Series OTDR Module E4138FC65-APC (4100 C, 1310/1550/Filtered 1650 nm, APC) 4100 C OTDR module with 1310/1550 nm and filtered 1650 nm on a single APC test port, up to 45 dB dynamic range for construction and in-service troubleshooting.	Details →
E4146A-APC	4100 Series Quad OTDR Module E4146A-APC Multimode/Singlemode 850/1300/1310/1550 nm, APC Quad-wavelength 850/1300/1310/1550 nm multimode and singlemode OTDR module with APC port for T-BERD/MTS and OneAdvisor 800 platforms.	Details →
E4146A-PC	4100 Series Quad OTDR Module E4146A-PC Multimode/Singlemode OTDR (PC) Quad-wavelength 850/1300/1310/1550 nm OTDR module with PC test ports for multimode and singlemode testing on T-BERD/MTS and OneAdvisor 800 platforms.	Details →

Key Features

SmartLink Mapper (SLM) icon based results view
Up to 45 dB dynamic range and 256,000 acquisition points
PON optimized to test through up to a 1x256 splitter (FTTH-SLM)
Combined singlemode/multimode (Quad) version
Single-/Dual-/Tri-wavelength versions with 1310, 1550, 1625, and 1650 nm
Single connector port for 1310, 1550 and in-service 1625 or 1650 nm filtered wavelengths for in-service troubleshooting
Integrated light source and power meter on OTDR port
Available in FiberComplete version for automated bi-directional OTDR, IL and ORL measurements
Instant bidirectional OTDR event loss analysis TrueBIDIR (patented) with data link via Fiber Under Test for auto test setup and results exchange
Instantaneous automatic traffic detection to avoid live signal interference or transmitter damage
Consolidated reporting for all wavelengths tested
Touch gesture user interface with SmartTEST assistant apps
Module portability between VIAVI platforms
Automated batch testing with MPO-based multifiber switches, up to 192 ports
Embedded launch cable measurement feature
OTDR test port health check with every test
Cable-SLM software option for high fiber count cable projects
Quad module: up to 37 dB dynamic range in single-mode and 26 dB in multimode
Quad module: TIA/IEC pass/fail thresholds and propagation delay measurement in multimode (TIA-568-C)
Quad module: IEC 61280-4-3-compliant using an external modal controller

Specifications

General (4100 A, B, C)

Size (HxWxD) 4100 A, 4100 B, 4100 C	134 x 128 x 40 mm (5.28 x 5.04x 1.58 in)
Weight 4100 A, 4100 B, 4100 C	0.4 kg (0.88 lb)
Operating temperature 4100 A, 4100 B, 4100 C	0°C to 50°C (+32°F to 122°F) Additional temperature restrictions may apply based on the mainframe used
Storage temperature 4100 A, 4100 B, 4100 C	-20°F to + 60°C (-4°F to 140°F) As printed in the datasheet
Humidity (noncondensing) 4100 A, 4100 B, 4100 C	5 to 95%

OTDR (4100 A, B, C)

Laser safety class 4100 A, 4100 B, 4100 C	Class 1 - IEC 60825-1:2014 Typical at 25°C
Sampling points 4100 A, 4100 B, 4100 C	Up to 256,000
Sampling resolution 4100 A, 4100 B, 4100 C	4 cm min
Distance display range 4100 A, 4100 B	0.1 up to 260 Km
Distance display range 4100 C	0.1 up to 400 Km
Distance accuracy 4100 A, 4100 B, 4100 C	± (0.5 m + sampling resolution + 0.001% x distance) Excluding group index uncertainties
Attenuation linearity 4100 A, 4100 B, 4100 C	± 0.03 dB/dB
Reflectance accuracy 4100 A, 4100 B, 4100 C	± 2 dB
Central wavelengths 4100 A	1310 ± 20 nm, 1550 ± 20 nm, 1625 ± 15 nm 1310/1550 nm: laser in CW and 25°C; 1625 nm: laser at 25°C measured at 10 µs
Central wavelengths 4100 B	1310 ± 20 nm, 1550 ± 20 nm, 1625 ± 10 nm, 1650 ± 10/-5 nm Laser at 25°C
Central wavelengths 4100 C	1310 ± 20 nm, 1550 ± 20 nm, 1625 ± 10 nm, 1650 ± 15 nm Laser at 25°C measured at 10 µs
RMS dynamic range 1310/1550/1625 nm 4100 A	37 dB / 36 dB / 36 dB One-way difference between extrapolated backscattering level at fiber start and RMS noise level, after 3 minutes averaging
RMS dynamic range 1310/1550/1625/1650 nm 4100 B	42 dB / 40 dB / 41 dB / 41 dB After 3 minutes averaging
RMS dynamic range 1310/1550/1625/1650 nm 4100 C	45 dB / 45 dB / 44 dB / 42 dB 1550 nm: 45 dB with 5 min acquisition time and 44 dB with 3 min acquisition time
Pulse widths 4100 A, 4100 B	5 ns to 20 µs
Pulse widths 4100 C	3 ns to 20 µs 3 ns pulse width with software option EPULSE3NS
Event dead zone 4100 A	0.7 m Measured at ±1.5 dB down from the peak of an unsaturated reflective event, using 5 ns pulse width at 1310 nm
Event dead zone 4100 B, 4100 C	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 A, 4100 B	3 m
Attenuation dead zone 4100 C	2.5 m
Attenuation dead zone (PON splitter) 4100 B	45 m Measured on a 16 dB loss (typical 1x32 split ratio) non-reflective splitter at 1310 nm, using 200 ns pulsewidth
Attenuation dead zone (PON splitter) 4100 C	20 m Measured on a 16 dB loss (typical 1x32 split ratio) non-reflective splitter at 1310 nm, using 100 ns pulsewidth
Live wavelength isolation	>45 dB; 1260 to 1620 nm

Hollow Core Fiber (4100C)

Dynamic range 4100 C	30/30/29/27 dB Laser at 25°C measured at 10 µs
Attenuation dead zone (solid to hollow core transition) 4100 C	20 m, after 15 dB Rayleigh backscattering difference Measured on a non-reflective transition at 100ns

Light Source (4100 A, B, C)

Wavelengths 4100 A, 4100 B, 4100 C	1310/1550/1625 nm
Output power level 4100 A, 4100 B, 4100 C	-3.5 dBm in CW mode
Modulation frequency (tone generation) 4100 A, 4100 B, 4100 C	270 Hz, 330 Hz, 1 KHz, 2 KHz
Stability (8 hours) 4100 A, 4100 B, 4100 C	< ± 0.1 dB After warm up time of 20 min
Auto λ mode 4100 A, 4100 B, 4100 C	Yes (with VIAVI compatible power meters)

In-line Broadband Power Meter (Hardware Option E41OTDRPM)

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

Quad OTDR Module – General and Measurement

Weight E4146A	0.4 kg (0.88 lb)
Dimensions (w × h × d) E4146A	128 x 134 x 40 mm (5 x 5.28 x 1.58 in)
Interchangeable optical connectors E4146A	FC, SC, LC, and ST
Laser safety class (21 CFR) E4146A	Class 1
Group index range E4146A	1.300000 to 1.700000 in 0.00001 steps
Number of data points E4146A	Up to 256,000 data points
Distance display range E4146A	0.5 m to 260 km
Cursor resolution E4146A	1 cm
Sampling resolution E4146A	4 cm
Distance accuracy E4146A	± (0.5 m + sampling resolution + 0.001% x distance) Excluding group index uncertainties
Attenuation display range E4146A	1.25 dB to 55 dB
Attenuation linearity E4146A	±0.03 dB/dB
Reflectance accuracy E4146A	±2 dB
CW source output power level E4146A	−3.5 dBm
Light source operating modes E4146A	CW, 270 Hz, 330 Hz, 1 kHz, 2 kHz, TWINTest

Quad OTDR Module – Optical Performance

Central wavelength (multimode) E4146A	850/1300 ±30 nm Laser at 25°C
Central wavelength (single-mode) E4146A	1310/1550 ±20 nm Laser at 25°C
Pulse width (multimode / single-mode) E4146A	3 ns to 1 µs / 3 ns to 20 µs
RMS dynamic range (multimode / single-mode) E4146A	26/24 dB / 37/35 dB After 3-minutes averaging at 500 ns in multimode and 20 µs in single-mode
Event dead zone (multimode / single-mode) E4146A	0.55 m / 0.65 m Measured at ±1.5 dB down from the peak of an unsaturated reflective event
Attenuation dead zone E4146A	3 m Multimode and single-mode; measured at ±0.5 dB from the linear regression
Distance display range (multimode / single-mode) E4146A	Up to 10 Km / Up to 260 Km

Applications

Construction, commissioning and troubleshooting of metro and long-haul networks
Tier-2 certification and maintenance of enterprise and data center networks
High fiber count/ribbon cables with automated MPO switching
FTTA fiber cable characterization and troubleshooting (macro cell towers, wireless backhaul, DAS, cloud RAN)
FTTH-PON certification and troubleshooting through splitters, including unbalanced, tapered and indexed splitter architectures
Hollow core fiber test and certification for high-speed networks and data center interconnects
Wireless 5G x-haul and point-to-point fiber links

Options & Accessories

Option	Description
E41OTDRPM	Power meter (hardware option) — In-line broadband power meter on the OTDR port
E41OTDRCR	OTDR module calibration report
EUSCADS/-APC	SC/PC (Blue), SC/APC (Green) test port adapter – screw type
EULCADS/-APC	LC/PC (Blue), 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
EULCADSMM	LC/PC (Blue) test port MM adapter, screw type — For the Quad OTDR module
EUFCADSMM	FC/PC test port MM adapter, screw type — For the Quad OTDR module
EUSTADSMM	ST test port MM adapter, screw type — For the Quad OTDR module
ETRUEBIDIR-FCOMP-PRO/-UPG	TrueBIDIR: Bidirectional OTDR acquisition, on board real time analysis and averaging - All Networks — Software option installed on the mainframe; not compatible with T-BERD/MTS-5800
ELOOPBACK-FCOMP-PRO/-UPG	Loopback: Bidirectional 2 fibers OTDR acquisition, on board real time analysis and averaging - Access Networks — Software option installed on the mainframe; not compatible with T-BERD/MTS-5800
ECABLESLM/-UPG	Cable-SLM: Project cable management, up to 10,000 fibers — Software option installed on the mainframe
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
EXTRANGE/-UPG	Increase RMS dynamic range for 4100 Module A OTDR — Software option installed on the mainframe
EPULSE3NS	Allow 3 ns pulse width for 4100 Module C OTDR — Software option installed on the mainframe
RP-HCF-LP	ReportPRO hollow core fiber license — Used with TrueBIDIR to generate a Hollow Core Fiber Loss Profile report