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The Yamasaki Y42 Dual Wavelength OTDR provides fibre fault location and trace analysis with a choice of 1310/1550 nm singlemode or 850/1300 nm multimode models. It features a 7-inch colour touchscreen, automatic and manual testing, an optical power meter, light source, visual fault locator and supplied USB fibre inspection probe. Choose from four models to suit your fibre type and dynamic-range requirements.
The Yamasaki Y42 Dual Wavelength OTDR provides fibre optic trace analysis, fault location and integrated testing tools in a portable touchscreen instrument. Choose 1310/1550 nm for singlemode fibre or 850/1300 nm for multimode fibre. As a result, you can select the model that matches your network, installation work and maintenance requirements.
Whether you need to investigate a damaged cable or review a new fibre link, the Y42 helps you assess events along the route. In addition, its integrated optical power meter, light source and visual fault locator support everyday testing tasks. A supplied USB inspection probe also helps you examine connector end faces before testing.
The Y42 range includes three singlemode models with different dynamic ranges and one multimode model. Therefore, you can choose the appropriate testing capability while retaining the same practical operating platform.
A dual wavelength OTDR tests fibre at two optical wavelengths. However, the wavelength pair must match the fibre type.
For singlemode networks, the Y42, Y42-h and Y42-p operate at 1310 nm and 1550 nm. Meanwhile, the Y42-m operates at 850 nm and 1300 nm for multimode networks.
Each model provides its specified wavelength pair. Consequently, selecting a singlemode Y42 does not also provide multimode OTDR testing.
This distinction makes purchasing straightforward. First, identify the fibre you need to test. Then, select the model with the appropriate wavelengths and dynamic range.
The singlemode Y42 models suit technicians working on compatible OS2 fibre installations. Typical applications include building interconnections, campus backbones, telecommunications cabling and industrial fibre routes.
Testing at both wavelengths gives you two traces to review. Therefore, you can compare the behaviour of the same link under different optical conditions.
For example, a bend may produce more noticeable loss at 1550 nm than at 1310 nm. However, you should assess that difference alongside the trace, event location and physical installation.
The Y42-m provides the wavelength pair for multimode OTDR testing. As a result, it suits compatible multimode installations in commercial buildings, enterprise networks and data centres.
Multimode links often contain several connections over relatively short distances. Therefore, suitable pulse settings, clean connectors and appropriate launch fibres remain essential.
Before ordering, confirm your fibre type, connector interfaces and project testing requirements. This helps you select the correct instrument and supporting accessories.
The Yamasaki Y42 Dual Wavelength OTDR range offers four model options. The table below shows their wavelength pairs, dynamic ranges and published dead-zone specifications.
| Specification | Y42 | Y42-h | Y42-p | Y42-m |
|---|---|---|---|---|
| Fibre type | Singlemode | Singlemode | Singlemode | Multimode |
| OTDR wavelengths | 1310/1550 nm | 1310/1550 nm | 1310/1550 nm | 850/1300 nm |
| Dynamic range | 32/30 dB | 42/40 dB | 45/43 dB | 26/28 dB |
| Event dead zone | 0.8 m | 0.5 m | 0.5 m | 0.5 m |
| Attenuation dead zone | 4 m | 3.5 m | 3.5 m | 3.5 m |
The dynamic-range figures follow the wavelength order shown above. These model specifications appear in Anderson Corporation’s published Y42 information.
The Y42 provides 1310/1550 nm testing with a dynamic range of 32/30 dB. Therefore, it offers a practical starting point for singlemode installation and maintenance work where this capability meets the link requirements.
Before selecting it, consider the expected fibre attenuation, connection losses and testing conditions. This ensures the instrument matches your actual workload.
The Y42-h retains the same singlemode wavelength pair while increasing dynamic range to 42/40 dB. Consequently, it provides additional measurement capability for links with greater optical loss.
It also offers shorter published event and attenuation dead zones than the standard Y42. However, actual event visibility still depends on the measurement settings and reflective conditions.
The Y42-p provides 45/43 dB dynamic range at 1310/1550 nm. As a result, it offers the highest published dynamic range among these four Y42 models.
For demanding singlemode testing, this additional capability may help meet your requirements. Nevertheless, dynamic range alone does not determine suitability for every network.
The Y42-m provides 850/1300 nm testing with 26/28 dB dynamic range. Therefore, it is the appropriate Y42 option when your work requires multimode OTDR measurements.
If you regularly test both singlemode and multimode fibre, consider whether a four-wavelength instrument would better match your workload.
The Yamasaki Y42 suits testing with one dedicated wavelength pair: 1310/1550 nm for singlemode or 850/1300 nm for multimode. However, your workload may require additional capability.
If you regularly test both fibre types, explore the Yamasaki Y44 Quad Wavelength OTDR. It combines 850/1300 nm multimode and 1310/1550 nm singlemode testing in one instrument.
Alternatively, explore the Yamasaki Y43 Tri Wavelength OTDR for three-wavelength singlemode testing. Suitable configurations also support live-fibre testing, so confirm the wavelength combination and filtered testing capability when ordering.
Therefore, choose the Y42 for a dedicated singlemode or multimode testing requirement, the Y44 for combined fibre coverage, or an appropriate Y43 configuration for additional singlemode capability.
An OTDR sends optical pulses into a fibre and measures the returning signal. It then displays a trace showing optical behaviour along the link.
With the Y42, you can investigate event locations and loss changes rather than relying only on a basic continuity check. In addition, event mapping helps organise the detected events into a more accessible view.
Depending on the link and test conditions, you can assess:
However, every detected event needs context. A reflective event may represent an expected connection, while an unexpected loss may require further investigation.
Therefore, compare the trace with the cable route, splice records and expected link layout. This helps you turn measurements into practical maintenance decisions.
The Y42 supports automatic and manual testing modes. Consequently, you can choose the level of control that suits the task.
For an initial assessment, automatic operation provides a convenient starting point. Meanwhile, manual operation lets experienced technicians adjust parameters for the link under investigation.
The instrument uses a 7-inch colour touchscreen with 800 × 480 resolution. In addition, its graphical interface provides access to traces, settings and integrated functions.
Automatic mode helps simplify routine measurement setup. Therefore, technicians can obtain an initial trace before deciding whether the link needs more detailed analysis.
However, automatic settings cannot replace a review of the results. Always check whether the trace captures the complete link and separates the events you need to assess.
Manual control allows you to adjust the measurement to suit the fibre route. For example, you may need a shorter pulse to investigate nearby events.
Alternatively, a longer pulse may help when testing a link with greater attenuation. However, this changes the balance between measurement reach and event separation.
As a result, the most useful settings depend on the job. Review the trace and refine the setup where necessary.
Reflective events can temporarily limit an OTDR’s ability to distinguish nearby features. These limitations are described through event and attenuation dead zones.
The event dead zone concerns the ability to distinguish closely spaced reflective events. Meanwhile, the attenuation dead zone concerns the distance needed to resume meaningful loss measurement after a reflection.
The Y42 range lists event dead zones from 0.5 m to 0.8 m. Its published attenuation dead zones range from 3.5 m to 4 m, depending on the model.
These specifications help when assessing instrument suitability. However, they do not guarantee that every pair of closely spaced events will appear separately under all settings.
Therefore, use suitable pulse widths and launch arrangements. Also, consider the strength of reflections and the spacing of the connections.
The Yamasaki Y42 Dual Wavelength OTDR combines several fibre testing functions. Consequently, you can perform complementary checks without carrying a separate instrument for every task.
The built-in optical power meter lists a measurement range of −50 to +26 dBm. It also includes calibration wavelengths of 850, 1300, 1310, 1490, 1550, 1625 and 1650 nm.
Therefore, you can select the appropriate calibrated wavelength when measuring compatible optical signals.
However, power-meter calibration wavelengths differ from OTDR test wavelengths. They do not add extra OTDR wavelengths to the selected Y42 model.
The integrated light source operates at wavelengths consistent with the model’s OTDR outputs. In addition, it supports continuous-wave operation and modulation at 270 Hz, 1 kHz and 2 kHz.
With a compatible power meter at the opposite end, it supports optical loss testing. Therefore, it complements the OTDR’s event-location and trace-analysis functions.
The built-in visual fault locator provides a 650 nm, 10 mW visible-light output.
This function helps with suitable continuity and local fault investigations. For example, visible light may help reveal a damaged section where the fibre is accessible.
However, visibility depends on the cable construction, fault and surrounding conditions. Therefore, use the VFL as a complementary troubleshooting tool.
The Y42 datasheet lists a supplied inspection probe with 200× magnification, manual focus and USB output. It also specifies four supplied tips.
As a result, you can inspect compatible connector end faces before making a test connection. This helps identify contamination that could affect measurement quality.
For more information about the inspection accessory, view the Yamasaki USB Visual Microscope.
The Y42 includes event mapping and pass/fail functions. Together, these tools help you review measured events and identify results that need attention.
Event mapping presents the detected link structure in a simplified format. Meanwhile, pass/fail assessment compares measurements against the configured limits.
Therefore, set the limits to match the project requirements. A default threshold may not represent your customer’s acceptance criteria.
In addition, review the underlying trace when an event fails or appears unusual. This helps distinguish a physical link problem from an unsuitable test setup.
For final acceptance, follow the specified testing method and documentation requirements. The OTDR provides useful evidence, while complementary loss testing may also form part of the required handover.
The Y42 supports trace transfer to a PC and includes analysis software. Consequently, you can review results after the on-site measurement.
The datasheet describes USB and wireless transfer. It also lists USB-A, USB-C and an RJ45 LAN interface.
For practical record keeping, identify each trace by fibre number, route, direction and wavelength. In addition, use consistent file names across the project.
This makes results easier to retrieve during handover or later troubleshooting. Furthermore, baseline traces can support comparisons when a link develops a fault.
The datasheet also describes mobile-app remote operation. If this function matters to your workflow, confirm current app compatibility and setup requirements when ordering.
The Y42 weighs approximately 1.2 kg and measures 162 × 220 × 52 mm. Therefore, it provides an integrated testing platform suitable for transport between work locations.
Its internal lithium battery has a listed capacity of 3.7 V, 10,400 mAh. In addition, the supplied power arrangement accepts 100–240 V AC input.
The published operating temperature range is −10°C to +50°C. Meanwhile, the storage temperature range is −40°C to +70°C.
For dependable field use, protect the optical ports and keep connectors clean. Also, plan charging around the day’s workload and operating conditions.
A launch cable provides fibre between the OTDR and the link under test. Therefore, it helps you assess the near-end connection beyond the instrument’s initial dead zone.
Similarly, a receive cable provides fibre beyond the far-end connection. This helps you assess that connection rather than ending the measurement at it.
Choose accessories that match the fibre type and connector interfaces. In addition, select suitable cable lengths for the instrument settings and link requirements.
Anderson Corporation supplies OTDR Launch Cables for compatible testing arrangements.
Before connecting, inspect and clean the relevant end faces. Then, verify the test setup before recording the final results.
Choosing a Dual Wavelength OTDR starts with matching the instrument to your fibre type. You also need to consider dynamic range, event spacing, launch cables and reporting requirements.
That is why Anderson Corporation is developing a practical Knowledge Centre dedicated to Dual Wavelength OTDR selection and testing with the appropriate singlemode or multimode wavelength pair.
Whether you install fibre links, investigate faults or maintain network infrastructure, these resources will support more informed equipment and testing decisions.
Future articles will explain dual wavelength testing and the roles of 1310/1550 nm singlemode and 850/1300 nm multimode measurements. In addition, they will explore how comparing traces at two wavelengths supports link assessment.
Articles coming soon.
This section will examine how to select a Dual Wavelength OTDR for your fibre type and workload. Furthermore, future guidance will cover dynamic range, dead zones, connector interfaces and supporting accessories.
Articles coming soon.
Future articles will explain how to prepare a test setup with compatible launch and receive cables. They will also cover wavelength selection, automatic and manual settings, and trace recording.
Articles coming soon.
This section will explore unexpected loss, reflective events and differences between two wavelength traces. In particular, future guidance will explain how to investigate suspected bends, connector problems and unsuitable measurement settings.
Articles coming soon.
Future articles will cover optical port care, connector inspection and launch cable maintenance. In addition, they will examine equipment checks, accessory records and preparation for servicing.
Articles coming soon.
This section will examine Dual Wavelength OTDR use in singlemode infrastructure and multimode building networks. Furthermore, future articles will explore how fibre type, link characteristics and customer requirements influence testing plans.
Articles coming soon.
Each Y42 model provides one wavelength pair. The Y42, Y42-h and Y42-p test singlemode fibre at 1310/1550 nm. Meanwhile, the Y42-m tests multimode fibre at 850/1300 nm.
Their main differences are dynamic range and published dead-zone specifications. Therefore, choose between the Y42, Y42-h and Y42-p according to your link losses and measurement requirements.
The supplied Y42 datasheet does not specify a filtered live-fibre OTDR test port. Therefore, plan Y42 OTDR measurements on dark fibre. If you require in-service testing, ask Anderson Corporation about an appropriate filtered Y43 configuration.
Yes. The datasheet lists a supplied USB fibre inspection probe with 200× magnification and manual focus. In addition, it lists four probe tips.
No. The optical power meter has several calibration wavelengths. However, each Y42 model retains its specified two OTDR wavelengths.
An OTDR helps locate and assess events along a fibre. However, the project may also require insertion-loss measurements and other checks. Therefore, follow the customer’s specified acceptance procedure.
First, confirm whether you need singlemode or multimode testing. Then, review expected link attenuation, event spacing, connectors and reporting requirements with Anderson Corporation.
Visit the Anderson Corporation YouTube channel to explore our fibre optic product videos. In addition, subscribe to keep up with new videos from Anderson Corporation.
Choose a Dual Wavelength OTDR that matches the fibre you test and the links you maintain.
For singlemode work, compare the Y42, Y42-h and Y42-p dynamic-range options. Alternatively, select the Y42-m for dedicated 850/1300 nm multimode testing.
Contact Anderson Corporation with your fibre type, typical link lengths and testing requirements. Our team can help you select the appropriate model, connector interfaces and launch-cable accessories.
Download the Yamasaki Y42 OTDR datasheet to review the published specifications, then request a quote for your preferred configuration.
