SRI Sim Excites As Well As Tests

The SE-4257 Flight Telemetry RF Exciter & Test Signal Simulator from Summation Research, Inc. (SRI) combines a state-of-the-art high data rate digital wideband waveform modulator with a high performance radio frequency (RF) upconverter to produce transmission-ready signals in the Baseband, Upper L-, Lower L-, and both Transmit and Receive S-Band frequency bands. An advanced, digital implementation provides for the small form and fit while fully satisfying applications requiring ruggedized packaging, minimum power consumption, and high spectral purity. The design supports all ARTM waveforms including Tier 0 (PCM/FM), Tier I (SOQPSK) and Tier II (Multi-h CPM) as well as a multitude of complex digital modulation formats.




Data generation, coding, and modulation can be driven from a variety of external digital inputs or via internal pattern and waveform generation sources. Dual data processing paths are included to allow creation of independent I and Q data coding. A single SE-4257 can replace a BERT, waveform generator, vector modulator, upconverter, amplifier, noise source, attenuators, power meter, spectrum analyzer and a frequency converter. Combining these capabilities in one small, simple-to-use unit allows quick and accurate setup and testing without in-depth system knowledge. The practical design of the SE-4257 Exciter also supports link test and verification applications by providing dual channel bit-error-rate testing functions as well as simulated noise insertion for ground station loopback testing. The SE-4257 RF Exciter is implemented in an industry standard 19 inch rack mountable chassis and provides full status and control capabilities—Melbourne, Florida