• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista QDD-400G-ZR-Arista | 400ZR QSFP-DD Tunable DWDM Transceiver, 120km

QDD-400G-ZR-Arista

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Description

This Arista 400GBASE-ZR transceiver is a software-tunable coherent DWDM module in the QSFP-DD form factor, compliant with OIF-400ZR. It is built for point-to-point Data Center Interconnect over dark fibre, letting a router or switch carry IP over DWDM directly from a 400G QSFP-DD port instead of relying on dedicated optical transport hardware.

The module carries 400G on a single wavelength using DP-16QAM coherent modulation over duplex LC single-mode fibre (G.652). It tunes across the C-band from 191.300 to 196.100 THz on 100GHz and 75GHz grids, with transmit power above -10 dBm and a receive range of -16 to 0 dBm. Amplified reach is up to 120km, with a maximum span loss of 25 dB. Power draw is 16 W typical and 20 W maximum. Management and telemetry run through native Arista EOS, including pre and post-FEC BER, OSNR, chromatic dispersion, PMD and DGD reporting.

It pairs with Arista OSFP-AMP-ZR and QSFP-AMP-ZR pluggable amplifiers and the CAB-LC8-CS coupler-splitter for high-capacity links without an external line system. Supported on specific Arista platforms only, so check the Arista Transceiver and Cable Guide for your switch.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- OIF-400ZR compliant for industry-wide interoperability
- 400Gb/s over a single wavelength using coherent DP-16QAM
- Fully software tunable across the C-band at 75GHz or 100GHz grid spacing
- Plugs directly into a 400G QSFP-DD port for IP over DWDM
- Full digital optical monitoring with pre and post-FEC BER, OSNR, chromatic dispersion, PMD and DGD reporting in EOS
- Works with Arista QSFP-AMP-ZR and OSFP-AMP-ZR amplifiers and the CAB-LC8-CS coupler-splitter for up to 3.2T per fibre pair over 120km
- Native Arista EOS configuration and telemetry

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Form factor: QSFP-DD, Type 2A
- Standard: 400GBASE-ZR, OIF-400ZR compliant
- Modulation: DP-16QAM at approx. 59.84375 Gbaud
- Optical connector: Duplex LC
- Fibre type: SMF G.652
- Tunable channel range: 191.300 to 196.100 THz
- Channel grid: 100GHz and 75GHz
- Wavelength: 1528.77 to 1566.52 nm
- Tx output power: > -10 dBm
- Rx input power: -16 dBm to 0 dBm
- Min Tx OSNR: 45 dB
- Min Rx OSNR: > 26 dB
- FEC: C-FEC
- Pre-FEC BER threshold: 1.0E-02
- Max amplified reach: 120km
- Max span loss: 25 dB
- Min span loss: 2 dB
- Max chromatic dispersion: 2400 ps/nm
- Power consumption: 16 W typical, 20 W max
- Max case temperature: 75C
- Module dimensions (H x W x D): 13.5 x 19 x 93.3 mm
- Pull tab colour: White

FAQs

Q: Does this transceiver need a separate licence?
A: No separate licence is stated for the module. Management and telemetry are handled through native Arista EOS.

Q: How much power does it draw?
A: It draws 16 W typical and 20 W maximum from the host QSFP-DD port, so confirm your platform can supply this per-port power.

Q: What is needed to reach 120km?
A: The 120km figure is an amplified reach over G.652 single-mode fibre. It is achieved with Arista OSFP-AMP-ZR or QSFP-AMP-ZR pluggable amplifiers and the CAB-LC8-CS coupler-splitter.

Q: Which platforms does it work with?
A: It is supported on specific Arista platforms only. Check the Arista Transceiver and Cable Guide for your switch or router model before ordering.

Q: How does it differ from the OSFP version?
A: The OSFP-400G-ZR has the same optical specifications but uses the OSFP form factor. This SKU is the QSFP-DD version, so match it to your port type.

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