TTi TGR6000 - 6GHz RF Signal Generator with Sweep
  
Features 
10MHz to 6000MHz frequency range   
10Hz setability, +/-1ppm frequency stability   
Locking to external frequency standard   
-110dBm to +7dBm amplitude, 0.1dB steps   
Fast stepping sweep with dwell times down to 10ms   
List sweep of up to 1000 points of amplitude vs frequency   
User compensation tables for specific test set-ups   
Full remote control through RS232, USB, LAN and GPIB