USB PCM Simulator and RF Transmitter Features:
 USB Interface to a host PC for set up and DC power; Nominal 10 mW wideband RF
Transmitter output frequency modulated with a Simulated dynamic serial PCM or SOQPSK
Bitstream; Rechargeable Battery Pack Option for autonomous operation when programmed. Recharges through USB port.
 Transmitted Frequency covers L-Band, S-Band and C-Band from
4.3 GHz to 6 GHz; Programmable transmitter centre frequency
 Optional User programmable 60dB attenuation in 1 dB steps down from nominal 10 mW
 PCM/FM Modulation and SOQPSK Modulation; PCM Simulation in excess of 20 MBPS
 BERT Pattern Generator Mode; Very Long Frame Capability with low frequency Dynamics
 Complex Sub-Frame Capability; Super-Commutation; Sub-Commutation; Embedded Stream Generation; Generates Programmable Dynamic Parameters including: Sine, Cosine, Square, Ramp and Triangular waveforms
 Programmable parameter frequency; Fixed Word Value; Common Word Value; External User generated PCM data files can be stored and repetitively transmitted
 TTL and RS422 Data and Clock Outputs

For More Info Please see this PDF Data Sheet