Agilent/HP / Signal Generator / E4421B

Frequency Range 250 kHz - 3 GHz  
Frequency Resolution .01 Hz  
Output Accuracy +/- .5 dB  
Output Range -136 dBm - +10 dBm  
Output Resolution 0.02 dB  
SSB Phase Noise Range -120 dBc/20 kHz - -104 dBc/20kHz  
Time Base Stability +/- 1 ppm 

OPTION

0BV   Service documentation, component level  
0BW   Service documentation, assembly level  
0BX   Service documentation, assembly and component  
1CM   RACK MT W/O HNDL  
1CN   Handle kit  
1CP   Rackmount kit with handles  
1E5   High-stability time-base  
1E6   High performance pulse modulation  
1EM   Moves all front panel connectors to rear panel  
1EN   Additional material for 1E6 and UNN  
6NB   Additional material for 1E6 and UNB