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Functional Interconnect Test Solutions FITS-8CH Error performance validation system for 1.6 Terabit (224G) interconnects
- Overview
- All Models
- Accessories
- Software
- Support
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. Interfaces using 212Gb/s and 106Gb/s electrical lanes are critical for achieving meeting higher interconnect reliability as networks require more bandwidth and lower cost per gigabit. Industry standards for 800GE and 1.6T pluggable multi-source agreements (MSAs) define a wide range of high-speed fiber and copper interconnects. Keysight’s multiple-lane Functional Interconnect Test Solutions (FITS-8CH) provides 8 Tx and 8 Rx channels of functional Bit Error Rate (BER) and Forward Error Correction (FEC) performance validation.
Up to 224G Channel, 1.6T Error Performance Validation
Eight (8) 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 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 channels.
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, with direct 1.85 mm RF connections to MCBs and electrical evaluation boards. The Advanced Option adds automatic lane tuning to optimize signal performance.
Test More with Special Channel Configurations
High‑drive and chip‑to‑module channels support a range of signaling needs. High‑drive channels deliver maximum-voltage signals above 1 Vpp. 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 8 Tx and 8 Rx
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Interface
4-channel coaxial RF cables, 1.85mm, male, Auto-lane tuning with Keysight DCA
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Lane Speeds
212.5 Gb/s, 106.25 Gb/s, 53 Gb/s
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FEC
Optional, FEC Monitoring
Most Popular Configurations
FITS-8CH, 2RU Benchtop Chassis
The Functional Interconnect Test Solutions, model FITS-8CH, includes 2RU benchtop chassis with eight (2x4) High Drive I/O front panel coaxial interface channels and eight (2x4) Chip to Module I/O front panel coaxial interface channels.
The Functional Interconnect Test Solutions, model FITS-8CH, includes 2RU benchtop chassis with eight (2x4) High Drive I/O front panel coaxial interface channels and eight (2x4) Chip to Module I/O front panel coaxial interface channels.
FITS-8CH, 2RU Benchtop Chassis
941-1020
The Functional Interconnect Test Solutions, model FITS-8CH, includes 2RU benchtop chassis with eight (2x4) High Drive I/O front panel coaxial interface channels and eight (2x4) Chip to Module I/O front panel coaxial interface channels.
- High-Speed Multi-Channel Testing: (8) independent transmit and (8) independent receive differential channels supporting 53Gb/s, 106Gb/s, and 212.5Gb/s PAM4 signaling speeds. FITS-8CH can simultaneously measure real-time BER performance on all (8) transmit and (8) receive channels.
- Versatility Across Development and Manufacturing Applications: FITS-8CH is suitable for a wide range of high-speed interconnects and can be used for error performance validation in applications such as:
- Product development and QA for pre-production fully assembled interconnects.
- Manufacturing for sub-assembly mechanical alignment, temperature test, in-line, near-line, and end-of-line error performance validation applications.
- FITS-8CH can connect to your 1.85mm RF connector fixture or to standard Module Compliance Boards with module controls over a GPIO interface. GPIO cable is included with chassis.
- Advanced Optical and Electrical Interconnect Validation: Suitable for a wide range of high-speed interconnect test applications, including 1.6T, 800GE, and 400GE interconnect standards. Media types are fully retimed optical transceivers (FRO), Active Optical Cables (AOC), and Active Electrical Cables (AEC). Other interconnect types may be supported on 106G and 53G lanes. Please consult your Keysight representative.
- Selection of channel voltage options for different applications: High Drive channels and Chip-to-Module channels are available.
- High Drive channels are for maximum voltage levels for applications with interconnects that require signals at greater than 1Vpp signal.
- Chip-to-Module channels for testing at industry standard Ethernet signal levels up to 1Vp-p.
- Performance Under Challenging Conditions: Designed to deliver excellent signal integrity, ensuring that even under the most difficult signaling conditions, accurate BER at all supported channels speeds, and FEC symbol error correction analysis and margin assessment for the 212Gb/s channel speed are achieved.
FITS-8CH Chassis — Advanced Option
Advanced Option for the Functional Interconnect Test Solutions GUI for the FITS-8CH chassis. Adds FEC error correction performance measurement and interconnect lane tuning capabilities to the GUI for the FITS-8CH chassis.
Advanced Option for the Functional Interconnect Test Solutions GUI for the FITS-8CH chassis. Adds FEC error correction performance measurement and interconnect lane tuning capabilities to the GUI for the FITS-8CH chassis.
FITS-8CH Chassis — Advanced Option
930-3365
Advanced Option for the Functional Interconnect Test Solutions GUI for the FITS-8CH chassis. Adds FEC error correction performance measurement and interconnect lane tuning capabilities to the GUI for the FITS-8CH chassis.
- High-Speed Multi-Channel Testing: (8) independent transmit and (8) independent receive differential channels supporting 53Gb/s, 106Gb/s, and 212.5Gb/s PAM4 signaling speeds. FITS-8CH can simultaneously measure real-time BER performance on all (8) transmit and (8) receive channels.
- Versatility Across Development and Manufacturing Applications: FITS-8CH is suitable for a wide range of high-speed interconnects and can be used for error performance validation in applications such as:
- Product development and QA for pre-production fully assembled interconnects.
- Manufacturing for sub-assembly mechanical alignment, temperature test, in-line, near-line, and end-of-line error performance validation applications.
- FITS-8CH can connect to your 1.85mm RF connector fixture or to standard Module Compliance Boards with module controls over a GPIO interface. GPIO cable is included with chassis.
- Advanced Optical and Electrical Interconnect Validation: Suitable for a wide range of high-speed interconnect test applications, including 1.6T, 800GE, and 400GE interconnect standards. Media types are fully retimed optical transceivers (FRO), Active Optical Cables (AOC), and Active Electrical Cables (AEC). Other interconnect types may be supported on 106G and 53G lanes. Please consult your Keysight representative.
- Selection of channel voltage options for different applications: High Drive channels and Chip-to-Module channels are available.
- High Drive channels are for maximum voltage levels for applications with interconnects that require signals at greater than 1Vpp signal.
- Chip-to-Module channels for testing at industry standard Ethernet signal levels up to 1Vp-p.
- Performance Under Challenging Conditions: Designed to deliver excellent signal integrity, ensuring that even under the most difficult signaling conditions, accurate BER at all supported channels speeds, and FEC symbol error correction analysis and margin assessment for the 212Gb/s channel speed are achieved.
- Keysight Functional Interconnect Test Solutions
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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.