DX3-QSFP-DD-4
VIAVI TestCenter dX3 DX3-QSFP-DD-4 400G 4-Port 1U QSFP-DD Test Appliance
4-port version of the dX3 1U QSFP-DD test appliance, upgradable to 8 ports by license
- MSA interface
- QSFP-DD
- Operational modes
- PAM4 – 400/200/100/50G; NRZ – 100/50/40/25/10G
- Port upgrade
- 4- to 8-port upgrade available via licensing
- Port CPU
- Stackable multi-core CPU
Overview
The VIAVI dX3 400G Appliance DX3-QSFP-DD-4 is the 4-port version of the 1U dX3 QSFP-DD TestCenter platform. Ports support 400/200/100/50G with PAM4 encoding and 100/50/40/25/10G with NRZ encoding. Auto Negotiation and Link Training are supported at all speeds, including 8x50G mode.
The appliance can be upgraded from 4 to 8 ports by license. VIAVI Smart Port Technology also allows single port and speed upgrades.
Key Features
- Complete 400G Ethernet testing across QSFP-DD interfaces
- Integrated Layer 2–3 validation on a single platform at full line rate
- Precise, repeatable latency, jitter, throughput, and loss measurements
- Validation of 100G/200G to 400G migration across multi-vendor ecosystems
- Regression testing for software, hardware, and topology changes
- 4-port version of the dX3 1U QSFP-DD appliance
- 4- to 8-port upgrade available via licensing
- PAM4 and NRZ in one platform
- Ethernet FEC, Auto Negotiation and Link Training including 8x50G AN/LT
- MACsec across all port speeds
- Protocol testing for L2/3 routing/switching and data center test cases
Specifications
General
| MSA interface | QSFP-DD |
|---|---|
| Operational modes |
PAM4 – 400/200/100/50G; NRZ – 100/50/40/25/10G
Speeds depend on ordered bundle
|
| Port upgrade | 4- to 8-port upgrade available via licensing |
| Port CPU | Stackable multi-core CPU |
| User reservation | Per port |
Timing and Synchronization
| Line clocking |
Stratum-3 rated oscillator is the default time source
Transmit line clock ± < 1 PPM on initial shipment; accurate to ± 4.6 PPM 15 years of operation
|
|---|---|
| Frame time-stamp resolution | 2.5ns |
| Appliance synchronization |
± 20ns
VIAVI-patented self-calibrating inter-chassis timing chain
|
| Daisy chain | Up to 255 appliances |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Data center fabric validation
- Service provider and core network testing
- Interoperability and acceptance testing
- Pre-deployment and regression validation
- Cloud computing and streaming services
- Data center ToR and EoR switches and fabrics
- Terabit routers
Options & Accessories
| Option | Description |
|---|---|
| DX3-QSFP-DD-4-825A | dX3 4-port, PAM4 – 400/200/100/50G; NRZ – 100/50/40/25/10G |
| DX3-QSFP-DD-4-750A | dX3 4-port, 400/200/100/50G |
| DX3-QSFP-DD-4-400A | dX3 4-port, 400G only |
Documents & Resources
DX3 8-Port 400G 1U QSFP-DD Tester
datasheet · PDF
TestCenter Platforms
brochure · PDF
High-Speed Ethernet Product Portfolio
brochure · PDF
TestCenter AI Data Center Test Solution
datasheet · PDF
Testing the AI Fabric
brochure
AI Workload Traffic Emulation
other
AI/ML Data Center Network Validation
app note · PDF
Bracing for Impact: How AI Will Transform Digital Industries
app note
The Future of High-Speed Ethernet across Data Center, Telecom, and Enterprise Networking
app note
Validating High-Speed Ethernet for Next-Generation AI Networking
app note · PDF