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SDRxE Gigabit Ethernet Data Recorder
Vortex SDRxE Data Recorder for GbE Sensor-to-DSP streaming data applications - 4 channels GbE record and playback
- 500MB/s sustained data recording (4 x 125MB/s)
- Easy-to-use, web-based GUI
- Scalable Fibre Channel (FC) storage
- SBOD or RAID configurations
- FC data retrieval kit
- Accurate time-stamping of incoming frames
With the increase of speeds of Ethernet traffic, GbE protocol is rapidly gaining acceptance as a standardized method of sending data between resources in embedded systems. Specifically, due to its ability to transport large amounts of data and to send this data over long distances, GbE has applicability in RADAR systems, sending digital data between the antenna/receiver subsystem(s) and digital signal processors (DSP) which might not be co-located in the same electronics chassis. To assist with GbE data capture, replay, and analysis, Curtiss-Wright has designed the SDRxE system.
The SDRxE system records streaming GbE data at 500MB/s that is sent from the RADAR sensor interface to the data recorder over fiber optic cable. While the SDRxE can capture both UDP and TCP data, UDP is the favored protocol for use in streaming sensor-to-DSP applications. Each incoming GbE data frame is time-stamped to later support accurate playback and to assist in detailed post analysis of retrieved data. When not recording GbE data, the SDRxE system can playback the data just like it arrived at 500MB/s over 4 channels. This unique re-play feature is very useful for RADAR simulation and DSP algorithm development.
Incoming data is sourced from a sensor that supports GbE protocols and uses an 850nm SFP interface. Data can be transmitted many 100’s of meters via multi-mode fiber optic cable. While the standard interface is an 850nm transceiver, the SDRxE can support other media options like 1310nm or 1550nm for longer distances.
This SDRxE GbE data recorder supports frames of any size including variable length datagrams, typically 100-250KB in size, and a maximum sustained transfer rate of approximately 500MB/s (4 channels @ 125MB/s). The SDRxE recorders have COTS configurations with 1, 2, 3, or 4 input channels.
The heart of the Vortex SDRxE system is the 3U controller. The SDRxE controller intergrates the Vortex family recorder software pre-configured for GbE protocol, Fibre Channel interface for storage, and RapidReplay data capture hardware all in a powerful rackmount computing platform. When combined with a 3U Vortex SBOD subsystem (16 FC disks @ 450GB each = 7.2TB), up to 4 hours of record time is achievable in just 6U total rack height. The system also supports continuous recording using the disks as circular buffers. When used in this "circular buffer" mode, the system can find the earliest valid data in the recording. With a Vortex SAN Access Kit running on a customer-provided PC workstation, captured data can be retrieved very quickly for post analysis.
If your application requires more data security, then use one of the two Vortex RAID systems for storage. The 2U Vortex RAID offers 12 disks capacity. For more record time, use the 4U Vortex RAID with 48 disk capacity.
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