Condition: Used — In working condition. The screen has a few scratches and the touchscreen calibration is noted as slightly off. This unit has been tested and is operational.

Included in the sale:
• Viavi JDSU MTS 4000 Mainframe (touchscreen)
• JDSU 4126 MA Single-Mode OTDR Module — 1310/1550 nm, 37/35 dB dynamic range, APC/SC connector, 260 km range
• AC Power Adapter
• Carry Bag
• Stylus

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, ruggedised touchscreen mainframe designed for field optical fibre testing. It accepts interchangeable test modules, making it a versatile platform for installation, maintenance, and troubleshooting of fibre optic networks. The MTS 4000 offers an intuitive touchscreen interface, long battery autonomy, and a lightweight form factor suited for demanding field environments.

The 4126 MA module is a single-mode OTDR module offering dual-wavelength operation at 1310 and 1550 nm, enabling comprehensive characterisation of SM fibre links including splice loss, connector reflectance, and event detection over extended ranges.

Key Specifications (4126 MA SM OTDR Module):
Wavelengths: 1310 nm / 1550 nm
Dynamic Range: 37 dB (1310 nm) / 35 dB (1550 nm)
Connector Type: APC/SC
Maximum Range: 260 km
Fibre Type: Single-Mode
Platform: MTS 4000 Mainframe
Interface: Touchscreen

Typical applications include fibre acceptance testing, fault localisation, maintenance of long-haul and metro SM fibre links, and network documentation. The MTS 4000 platform supports a wide range of JDSU/Viavi test modules, allowing the mainframe to be repurposed for different test applications as network needs evolve.

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, the email should accompany the order number, date and reason for return and must be 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 this case we will arrange for the return by way of a prepaid shipping label.