Condition: Used — Excellent. This unit has been fully tested and measurements are well within specification. The bulkhead is in excellent condition. Calibration was valid to March 2024. The OSA-501M module (part number 2281/91.23) provides full-band 1250–1650 nm high-performance DWDM optical spectrum analysis with a unique channel-drop function to isolate single DWDM channels from the spectrum during maintenance and troubleshooting.

Included in the sale:
• Viavi MTS 8000E V2 Mainframe with Power Meter and Visual Fault Locator
• Hard disk, touch screen, battery, Bluetooth and wireless connectivity
• OSA-501M 2281/91.23 High-Performance Full-Band DWDM Optical Spectrum Analyser module (1250–1650 nm)
• 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 MTS 8000E is a modular, portable mainframe platform designed for testing xDWDM networks and optical components with full-band, high-performance optical spectrum analysis. The OSA-500x series modules fitted to the MTS 8000E represent VIAVI's most advanced field-portable spectral test solutions, combining free-space optics technology with full-band measurement capability across 1250–1650 nm to support both CWDM and DWDM network testing.

The OSA-501M module provides a unique channel-drop function to isolate single DWDM channels from the spectrum during maintenance and troubleshooting, making it ideal for advanced field diagnostics on live DWDM networks.

Key Benefits:
Simple automated testing with pass/fail analysis at the push of a button
Get true OSNR results in seconds with the fastest in-band OSA (by 40%)
Optimise service quality with accurate, reliable OSNR measurements
Eliminate wavelength calibration with a self-calibrating OSA that cuts maintenance costs in half

Key Features:
Portable lab technology for field use
Full-band 1250–1650 nm for CWDM and DWDM networks
Ultra-high 0.038 nm optical resolution bandwidth
Industry-leading 0.010 nm wavelength accuracy
Future-proof signal analysis for 40/100 G data rates and 100G polarisation multiplexing channels
OSNR on-line measurement without channel overlap
Channel-drop function for single-channel isolation and tunable filter applications
In-band option to measure true OSNR in ROADM and 40 G networks

OSA-500x Module Variants:
OSA-500M — General-purpose high-performance OSA for installing and maintaining DWDM networks
OSA-501M — Unique channel-drop function to isolate single DWDM channels during maintenance and troubleshooting
OSA-500 — Improved optical-filter dynamic range for testing highest DWDM system OSNR values
OSA-500R — Standard instrument for measuring in-band OSNR in ROADM-based and 40 G systems
OSA-500RS — High-speed version completing measurements in under 30 seconds

Applications:
Provisioning and troubleshooting ROADM networks
Deploying and maintaining DWDM Metro and Core networks
Testing 40 G and 100 G interfaces and networks
Installing and maintaining CWDM systems in CATV, Access, and Mobile Backhaul

Technical Specifications (OSA-501M):
Wavelength Range: 1250–1650 nm
Optical Resolution Bandwidth: 0.038 nm
Wavelength Accuracy: 0.010 nm (internal calibration)
DWDM Channel Spacing: Down to 25 GHz
Special Function: Channel-drop for single DWDM channel isolation
Platform: Viavi MTS 8000E V2 Mainframe
Connectivity: Bluetooth, Wireless, Touch Screen
Additional Modules: Power Meter, Visual Fault Locator

Viavi OSA-500x Series Optical Spectrum Analyser Module Datasheet: Download PDF

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.