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Validating Error Performance in 1.6T Interconnects is Essential for Network Infrastructure
Demand for higher data throughput in AI data centers is accelerating the shift to 800GE and 1.6 Terabit Ethernet (1.6TE) network interconnects. Interconnects using 212Gb/s, 106Gb/s, and 53Gb/s electrical lanes are critical for improving interconnect reliability as networks require more bandwidth and higher reliability. Industry standards for 1.6T, 800GE, and 400GE pluggable multi-source agreements (MSAs) define a wide range of high-speed fiber and copper interconnects, and flyover cables.
Keysight’s multiple lane Functional Interconnect Test Solutions (FITS) provides 8 Tx and 8 Rx channels (FITS 8CH) or 16 Tx and 16 Rx channels (FITS 16CH) of functional BER and Forward Error Correction (FEC) error performance validation.
Up to 224G Channel, 1.6T Error Performance Validation
Eight (8) or sixteen (16) independent Tx and Rx channels support PAM4 212Gb/s, 106Gb/s, and 53Gb/s channel speeds and can simultaneously measure real-time BER performance on all channels.
FEC Measurements on 224G and 106G Channels
With the Advanced Option, get key FEC-related measurements such as pre-FEC and post FEC, BER, frame loss ratio, and FEC symbol-error performance with distribution analysis, data tables, and graphical charts on 224G and 106G channels with FITS 16CH, and on 212G channels with FITS 8CH.
The Advanced Option adds Keysight’s innovative automatic lane tuning capability to optimize signal performance.
Product Development and Manufacturing Apps
Offers product development testing, QA of assembled interconnects, and in line, near line, and end of line error performance validation for sub assemblies and final assemblies in manufacturing applications.
FITS offers direct 1.85 mm RF connections to HCBs, MCBs and your electrical evaluation boards (EVB).
The Advanced Option adds automatic lane tuning to optimize signal performance.
Test More with Special Channel Configurations
FITS 8CH offers high drive and chip to module channels, supporting a range of signaling needs.
High drive channels deliver maximum-voltage signals up to 2.8 Vp-p used for interfacing to lossy fixtures for lane tuning applications.
Chip to module channels support Ethernet standard levels up to 1 Vpp.
Direct connection to DCA X and UXR oscilloscopes enables advanced measurements.
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Number of channels
Independent 16 Tx and 16 Rx, Independent 8 Tx and 8 Rx
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Interface
FEC stats, Auto-lane tuning with Keysight DCA, 4-channel coaxial RF cables, 1.85mm, male, 8-channel SMPX coaxial RF cables; 1.85mm; male
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Lane Speeds
212.5 Gb/s, 106.25 Gb/s, 53 Gb/s
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FEC
FEC Monitoring, Optional
Most Popular Configurations
FITS-16CH, 2RU Benchtop Chassis with 16 Tx and 16 Rx Chip to Module Channels
The Functional Interconnect Test Solutions, FITS-16CH, includes a 2RU benchtop chassis with 16 Tx and 16 Rx Chip to Module channels of coaxial interfaces for 212.5Gb/s electrical lanes. It provides support for active and passive optical and copper interconnects.
The Functional Interconnect Test Solutions, FITS-16CH, includes a 2RU benchtop chassis with 16 Tx and 16 Rx Chip to Module channels of coaxial interfaces for 212.5Gb/s electrical lanes. It provides support for active and passive optical and copper interconnects.
Advanced Option for the Functional Interconnect Test Solutions GUI for the FITS-16CH chassis
This part number includes an advanced option for the Functional Interconnect Test Solutions GUI for the FITS 16CH chassis.
This part number includes an advanced option for the Functional Interconnect Test Solutions GUI for the FITS 16CH chassis.
- Data Sheet: Keysight Functional Interconnect Test Solutions 8CH
- Data Sheet: Keysight Functional Interconnect Test Solutions 16CH
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Frequently Asked Questions
Error performance validation of the interconnect typically occurs after completing physical Layer 1 electrical and optical IEEE802.3dj specification compliance, design validation and stress tests. FITS-8CH sends and receives PRBSQ patterns to simultaneously test all eight (8) transmit and eight (8) receive electrical lanes of the interconnect. This provides a Bit Error Ratio (BER) measurement for each lane and offers an easy way to compare the overall performance of all lanes at full line-rate bit rates. Every lane can be benchmarked for its BER performance, and the effects of cross talk in more realistic use cases can be observed. Further insight into error performance can lead to tap setting adjustments. On 212Gb/s electrical lane interconnects it is important to evaluate long-term FEC error correction performance using FITS-8CH FEC monitoring statistics.
FITS 8CH gives you a purpose-built Windows 11 interface that gets straight to testing—just pick your setup, run the measurement, and generate the report. You’re up and running right away.
Using standard RF 1.85 mm, 1ps, phase-matched coaxial cables across the connector, FITS-8CH delivers the highest signal integrity possible for a system of its type. The built-in SCPI API allows you to control the FITS-8CH and write test scripts if the FITS GUI is not your preference. The FITS GUI has a report generator that exports to a PDF file for comprehensive interconnect information, test set up and measurement results, and data graphs. You can save test configurations and reload them to execute repeatable tests suites.
The signal integrity of the FITS-8CH is among the best in the industry. To further enhance FITS-8CH signal performance, the Advance Option provides the ability to conduct lane tuning — when connected to an electrical Keysight DCA — to adjust the eye of the signal for the best performance on every channel. The Advance Option enables the FEC Monitor statistics for the 212.5Gb/s lane speed, providing an array of FEC statistics and symbol-error distribution analysis.