Condition: Used — in working condition. The screen has a fair few scratches; please review the images carefully for cosmetic condition.

This is the Viavi JDSU MTS 4000 touchscreen OTDR mainframe fitted with the JDSU 4126 MA single-mode module. The 4126 MA module provides dual-wavelength operation at 1310 and 1550 nm with dynamic ranges of 37 dB and 35 dB respectively, an APC-SC connector interface, and a maximum measurement range of 260 km — making it well suited to long-haul and metro singlemode fibre testing.

Included in the sale:
• JDSU MTS 4000 Mainframe (Touchscreen)
• JDSU 4126 MA SM OTDR Module (1310/1550 nm, 37/35 dB, APC-SC, 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, modular, touchscreen-based field platform designed for optical fibre testing. Its modular architecture allows a range of plug-in test modules to be used within the same mainframe, including OTDR, light source, and power meter modules, making it a versatile tool for installation, maintenance, and troubleshooting of fibre optic networks.

The JDSU 4126 MA is a single-mode OTDR module for the MTS 4000, providing precise time-domain reflectometry at both 1310 nm and 1550 nm wavelengths. It is designed for testing singlemode fibre in long-haul, metro, and access network applications.

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 Measurement Range: 260 km
Fibre Type: Singlemode
Platform: MTS 4000 Mainframe
Display: Colour touchscreen
Portability: Field-portable with carry bag

The MTS 4000 platform supports intuitive touchscreen operation, making it straightforward for field technicians to perform fibre characterisation, fault location, splice loss measurement, and end-to-end loss testing on singlemode networks.

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 recieved 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.