Condition: Used — Mainframe in used condition; the CWDM COSA-4055 optical spectrum analyser module is like new with minimal usage.

This listing comprises the Viavi (JDSU) T-BERD 2000 handheld mainframe combined with the CWDM COSA-4055 optical spectrum analyser module (unit references 2301/02 OSA). The COSA-4055 is a dedicated CWDM OSA module designed for characterising coarse wavelength-division multiplexed networks, measuring channel power levels, centre wavelengths, and optical signal-to-noise ratio across CWDM grid wavelengths.

Included in the sale:
• Viavi JDSU T-BERD 2000 mainframe
• CWDM COSA-4055 optical spectrum analyser module

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) T-BERD 2000 is a compact, handheld multi-application fibre optic test platform designed for field technicians working on access, enterprise, and metropolitan network installations and maintenance. Its modular architecture accommodates a range of interchangeable test modules, making it a flexible and cost-effective solution for diverse fibre characterisation tasks.

The CWDM COSA-4055 is a coarse wavelength-division multiplexing optical spectrum analyser module designed for the T-BERD 2000 platform. It enables field engineers to characterise CWDM network channels, verifying channel power levels, centre wavelengths, and optical signal-to-noise ratio (OSNR) across the ITU CWDM grid (1270 nm to 1610 nm, 20 nm spacing).

Key Specifications — Viavi CWDM COSA-4055:
Wavelength Range: 1270 nm to 1610 nm (CWDM grid)
Channel Spacing: 20 nm (ITU-T G.694.2)
Measurements: Channel power, centre wavelength, OSNR
Dynamic Range: Suitable for characterisation of live CWDM networks
Display: T-BERD 2000 colour LCD mainframe display
Connector Interface: FC/APC or SC/APC (module dependent)
Platform: Viavi T-BERD 2000 handheld mainframe
Power: Internal rechargeable battery or AC mains adapter

Please refer to the manufacturer's website for full and current 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.
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• 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.