Condition: Used — in working condition.

This listing includes a JDSU MTS 4000 touchscreen mainframe fitted with the JDSU 4126 MA SM singlemode OTDR module. The module operates at 1310/1550 nm with a dynamic range of 37/35 dB, APC connector, and supports singlemode fibre testing up to 260 km. SMART Test functionality is enabled for automated fibre characterisation.

Included in the sale:
• Viavi JDSU MTS 4000 Mainframe (touchscreen)
• JDSU 4126 MA SM OTDR Module (1310/1550 nm, 37/35 dB, APC)
• AC Power Adapter
• 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, portable, touchscreen-based mainframe platform designed for field technicians performing optical fibre testing and network maintenance. It accepts a range of interchangeable test modules, making it a versatile solution for installation, maintenance, and troubleshooting of singlemode and multimode optical networks.

The JDSU 4126 MA SM OTDR module is a high-performance singlemode OTDR designed for long-haul and metro network characterisation. With SMART Test automation, technicians can perform one-button fibre testing with automatic event detection, pass/fail analysis, and reporting — reducing the expertise required in the field while improving throughput.

Key Specifications (4126 MA SM Module):
Wavelengths: 1310 nm / 1550 nm
Dynamic Range: 37 dB (1310 nm) / 35 dB (1550 nm)
Connector Type: APC
Fibre Type: Singlemode
Maximum Range: 260 km
Test Modes: OTDR, SMART Test
Mainframe Display: Colour touchscreen
Platform: Viavi MTS 4000 modular mainframe

The MTS 4000 platform supports a wide range of Viavi/JDSU test modules and is widely used by network operators, contractors, and telecoms engineers for field-based fibre qualification and troubleshooting.

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.