Agilent/HP / Signal Generator / 8648D/1E5

Frequency Range 9 kHz - 4 GHz  
Frequency Resolution .001 Hz  
Output Accuracy +/- 2 dB  
Output Range -136 dBm - +10 dBm  
Output Resolution .1 dB  
Programmable Interface HP-IB  
SSB Phase Noise Range -120dBc/20kHz  
Time Base Stability +/- 2 ppm 

OPTION

0B0   Delete manual set  
1CM   Rackmount kit  
1E2   Modulation generator  
1E5   High-stability time-base  
1E6   Pulse Modulation  
1EA   High output power  
AB0   Taiwan - Chinese localization  
AB1   Korea - Korean localization  
AB2   China - Chinese localization  
ABD   Germany - German localization  
ABE   Spain - Spanish localization  
ABF   France - French localization  
ABJ   Japan - Japanese localization  
ABZ   Italy - Italian localization  
C03   Moves all front panel connectors to rear panel for 1E2  
C04   Moves all front panel connectors to rear panel  
RMKT   Agilent Refurbished Product  
UK6   Commercial calibrations certificate w/ test data  
UNM   Standard front and rear panel connector configuration  
UNN   Standard output power with electronic attenuator  
UNQ   Standard stability time-base