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.

Module variant: 4100 A
Central wavelength 1310 nm: 1310 ± 20 nm
Central wavelength 1550 nm: 1550 ± 20 nm
RMS dynamic range 1310 nm: 37 dB

Datasheet

Overview

The VIAVI E4126A is the 4100 Series A OTDR module with 1310 nm and 1550 nm test wavelengths. It is ordered as E4126A-PC or E4126A-APC depending on the test port adapter supplied, and it plugs into the T-BERD/MTS-2000, T-BERD/MTS-4000 V2, T-BERD/MTS-5800, OneAdvisor 800 and FTH-9000 platforms. Module portability allows fiber test capability to move between these platforms.

The 4100 A variant offers an RMS dynamic range of 37 dB at 1310 nm and 36 dB at 1550 nm, up to 256,000 acquisition points, a 0.7 m event dead zone and a 3 m attenuation dead zone. The dynamic range of the 4100 A module can be increased with the EXTRANGE software option. A built-in light source on the OTDR port provides continuous wave and tone-modulated output, and an in-line broadband power meter is available as a hardware option.

Test workflow and analysis

The module runs on the platform's OTDR applications, including the SmartLink Mapper (SLM) icon-based results view, the SmartTEST assistant that guides users through setup, testing, review and reporting, and consolidated reporting across all wavelengths tested. A test port health check verifies launch conditions before each acquisition and permanent live traffic detection prevents damage to transmission equipment. FiberComplete PRO software options add on-board bidirectional OTDR analysis (TrueBIDIR and Loopback), and Cable-SLM supports high fiber count cable projects. Test Process Automation (TPA) links the instrument to cloud-based job assignment and results submission.

Key Features

Dual-wavelength 1310/1550 nm singlemode OTDR module
37 dB RMS dynamic range at 1310 nm and 36 dB at 1550 nm
Up to 256,000 acquisition points with 4 cm minimum sampling resolution
Event dead zone 0.7 m and attenuation dead zone 3 m
Pulse widths from 5 ns to 20 µs
Integrated light source on the OTDR port with CW and tone modulation
In-line broadband power meter available as hardware option
Dynamic range increase available via EXTRANGE software option
SmartLink Mapper (SLM) icon-based results view
SmartTEST assistant with four-step guided setup, test, review and reporting
Embedded launch cable measurement feature
OTDR test port health check and permanent live traffic detection
FiberComplete PRO TrueBIDIR and Loopback bidirectional OTDR options
Cable-SLM option for high fiber count cable project management
Automated batch testing with MPO-based multifiber switches, up to 192 ports
Module portability between T-BERD/MTS-2000, -4000 V2, -5800, OneAdvisor 800 and FTH-9000 platforms
Delivered with SC/PC or SC/APC test port adapter

Specifications

OTDR

Module variant E4126A	4100 A
Central wavelength 1310 nm E4126A	1310 ± 20 nm Laser in CW and 25 °C
Central wavelength 1550 nm E4126A	1550 ± 20 nm Laser in CW and 25 °C
RMS dynamic range 1310 nm E4126A	37 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 1550 nm E4126A	36 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 E4126A	5 ns to 20 µs
Event dead zone E4126A	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
Attenuation dead zone E4126A	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
Distance display range E4126A	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
Sampling points	Up to 256,000
Sampling resolution	4 cm min
Live wavelength isolation	>45 dB; 1260 to 1620 nm
Laser safety class	Class 1 - IEC 60825-1:2014

Light Source

Wavelengths	1310/1550/1625 nm As printed for the 4100 Series A/B/C modules; the E4126A is the 1310/1550 nm version
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)

Calibrated wavelengths E41OTDRPM	Calibrated 1310/1490/1550/1625/1650 nm Hardware option E41OTDRPM
Selectable wavelengths E41OTDRPM	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°F to + 60°C (-4°F to 140°F) Printed as -20°F in the datasheet
Humidity (noncondensing)	5 to 95%
Platform compatibility	T-BERD/MTS-2000, -4000 V2, -5800, OneAdvisor 800 and FTH-9000
Test port adapter E4126A	SC/PC or SC/APC test port adapter (E4126A-PC / E4126A-APC)

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
Certification and troubleshooting of FTTH-PON networks
Wireless/5G x-haul access networks
Point-to-point solid core fiber links

Included

SC/PC or SC/APC test port adapter

Options & Accessories

Option	Description
E4126A-PC	4100 A OTDR – 1310/1550 nm – PC — Module ordering variant delivered with SC/PC test port adapter
E4126A-APC	4100 A OTDR – 1310/1550 nm – APC — Module ordering variant delivered with SC/APC test port adapter
E41OTDRPM	Power meter — In-line broadband power meter hardware option
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
EXTRANGE/-UPG	Increase RMS dynamic range for 4100 Module A OTDR — Software option – specific, to be installed on the mainframe
ETRUEBIDIR-FCOMP-PRO/-UPG	TrueBIDIR: Bidirectional OTDR Acquisition, on board real time analysis and averaging - All Networks — Software option – generic, to be 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 – generic, to be 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 – generic, to be installed on the mainframe
EFTTHSLM-BASE	FTTH-SLM Base: Tailored OTDR App. for FTTH Networks (Basic PON Architectures) — Software option – generic, to be installed on the mainframe
EFTTHSLM	FTTH-SLM: Tailored OTDR App. for FTTH Networks (Advanced PON Architectures, including Unbalanced/tap couplers) — Software option – generic, to be installed on the mainframe