Condition: Used — in working condition. Screen is in good condition.

The Viavi JDSU MTS 4000 is a modular, portable touchscreen OTDR mainframe fitted with the JDSU 4126 MA SM OTDR module. The module supports single-mode fibre testing at 1310 nm and 1550 nm, offering a dynamic range of 37/35 dB and a maximum measurement range of 260 km, making it well suited to long-distance fibre characterisation in the field. The SC-APC connector provides low back-reflection performance for accurate loss and event measurements.

Included in the sale:
• JDSU MTS 4000 Mainframe (Touchscreen)
• JDSU 4126 MA SM OTDR Module — 1310/1550 nm, 37/35 dB dynamic range, SC-APC 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, modular, touchscreen OTDR mainframe designed for field technicians testing single-mode and multimode optical fibre networks. The platform accepts a range of plug-in test modules, enabling it to be configured for diverse fibre characterisation tasks without the need for multiple instruments.

The 4126 MA SM OTDR module is a single-mode module designed for high-dynamic-range, long-distance fault location and fibre characterisation. With wavelengths of 1310 nm and 1550 nm and dynamic ranges of 37 dB and 35 dB respectively, the module is capable of testing fibre spans up to 260 km. The SC-APC connector minimises optical return loss at the instrument port, ensuring accurate reflectance and loss measurements.

Key Specifications (4126 MA SM Module):
Wavelengths: 1310 nm / 1550 nm
Dynamic Range: 37 dB (1310 nm) / 35 dB (1550 nm)
Connector Type: SC-APC
Maximum Range: 260 km
Fibre Type: Single-mode

MTS 4000 Mainframe:
Display: Colour touchscreen
Form Factor: Portable, handheld/field mainframe
Module Compatibility: Accepts interchangeable JDSU/Viavi test modules
Platform: Viavi MTS 4000 series

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

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.