Condition: Used

This JDSU MTS 4000 mainframe is in working condition and is the non-touchscreen model, operated via front panel buttons or mouse. It includes the built-in power meter (PM) and visual fault locator (VFL), along with the 4126 MA singlemode OTDR module providing dual-wavelength testing at 1310nm and 1550nm via an SC-APC connector. Please refer to the images for the cosmetic condition of this specific unit.

Included in the sale:
• JDSU MTS 4000 mainframe (non-touchscreen)
• 4126 MA SM OTDR module (1310/1550nm, SC-APC)
• Built-in power meter (PM)
• Built-in visual fault locator (VFL)

The images provided are of the actual item you will receive. Please review them carefully for the cosmetic condition and what is included in the sale.

The Viavi (formerly JDSU) MTS 4000 is a compact, modular field test platform designed for installation, maintenance, and troubleshooting of fibre optic networks. The mainframe accepts a range of interchangeable test modules, allowing technicians to configure the instrument for a wide variety of fibre measurement tasks without carrying multiple dedicated instruments. The non-touchscreen variant is operated via front panel buttons or an external mouse, making it robust and straightforward for field use.

The 4126 MA singlemode OTDR module provides dual-wavelength operation at 1310nm and 1550nm, enabling full characterisation of singlemode fibre links in a single test session. It delivers high dynamic range and precision event detection, making it suitable for both short- and long-haul fibre spans. The integrated power meter and visual fault locator (VFL) further extend the platform's capabilities for everyday field testing tasks.

Key Specifications (4126 MA SM OTDR Module):
Wavelengths: 1310 nm / 1550 nm
Fibre Type: Singlemode (SM)
Connector: SC-APC
Typical Dynamic Range: Up to 35 dB (1310 nm) / 33 dB (1550 nm)
Distance Range: Up to 260 km
Sampling Resolution: 0.05 m
Event Dead Zone: Typically 1.5 m
Attenuation Dead Zone: Typically 5 m
Measurement Capabilities: Fibre length, attenuation, event loss, return loss, ORL
Built-in Options: Power meter (PM), Visual fault locator (VFL)
Display: Non-touchscreen LCD, button/mouse operated
Platform: Modular — supports multiple JDSU/Viavi test modules

Please refer to the Viavi Solutions website for full and current specifications.

Product datasheet

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is not as specified, you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, and the email should include the order number, date and reason for return within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than not as specified.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is not as specified, in which case we will arrange a prepaid return label.