Welkin Sciences

The Digital IF Vector Analyzer (DIVA) eases verification of compliance with the TIA/ANSI 5041 Standard.Provides continuous real-time monitoring of SDT traffic including classification of packets. Measurementof packet rates, counts, and error statistics aid integration and validation activities. The DIVA provides agraphical spectrum analyzer display of the Digital IF signal.

Enables verification of compliance with the TIA/ANSI 5041 Open Standard Digital IF Interface (OSDI)• Continuous monitoring of the 10 GbE interface for SDT packet traffic, including VITA-49

digital-IF and VITA-49 context packets• Packet classification based on SDT class and stream ID• Packet statistics, including stream level packet counts, packet rates and lost packet count• Raw packet parsing, including extraction of header fields for all layers (802.3, IP, UDP,

RTP, VITA 49) and payload data from the VITA 49 layer• Raw packet parsing, including extraction of header fields for all layers

Digital IF Vector AnalyzerWorkstation for Packet Protocol and Signal Analysis

WS-SYS-DIVA-1

• User Manual, training and engineering support available

FAST = Future Advanced SATCOM Technologies OSDI = Open Standard Digital IF InterfaceSDT = Signal Data Transport

•

Welkin Sciences

DIVA Operation

Example Off-line Analysis of a Frequency Hopped Waveform

For further information on our products, email request to info@welkinsciences.com.

2 N . Nevada Ave . Suite 1280 Colorado Springs, CO 80903 719.520.5115www.WelkinSciences.com

Offline analysis using MATLAB of an SDT.WSP.DM stream captured using the Digital IF Vector Analyzer.Source signal is a 1 MHz chirp frequency hopping in a 125 MHz band. A single hop dwell is isolated in the spectral plot.

• The Digital IF Vector Analyzer workstation uses a low-level raw packet interfacebetween the software and the real-time data capture card to support continuous SDTtraffic monitoring. Packet filtering on the data capture card is used when possible tooffload processing for the workstation CPU.

• For SDT Digital IF packets, payload samples from multiple packets are merged tocreate a continuous Digital IF stream. The merged payload samples are collected inan array and saved to a .mat file or .npy file for offline analysis using MATLABor Python/Numpy environments. Also included in the files are arrays containing RTPand VITA-49 header field values from each packet. This capture capability operates ina burst mode only. Tens-of-thousands of packets, containing millions of Digital IFsamples, may be captured sequentially without packet loss in this mode.

• DIVA is a 1 RU rackmount computer operated from a web browser user interface