Additional Features: Frequency: 6 GHz <-100 dBc nonharmonic spurious to 2 GHz reduces error when testing spurious immunity of receivers AM, FM, and optional pulse modulation 0.01 Hz frequency resolution <-140 dBc/Hz typical SSB phase noise at 20 kHz offset at 1 GHz with Option 004 The Agilent 8665B signal generator is suited for basic receiver testing up to 6 GHz. With Option 004 (low-noise enhancement), it can be used for out-of-channel receiver testing or as a clock source where having the lowest phase jitter is important. Radar testing can be done by adding Option 008 (pulse modulation) . Pulse width and delay can be internally adjusted between 50 ns and 999 ns, eliminating the need for an external pulse generator. Standard FM rates of up to 2 MHz and deviations to 20 MHz are suitable for many applications such as high-speed digital communications. The internal modulation source generates sine, square, triangle or sawtooth waveforms. For applications demanding the lowest RF leakage, Option 010 provides increased RF shielding.

Option	Description
001	High Stability Time Base
002	2 GHz Doubled Output
003	Rear-Panel Input/Output
004	Low-noise Enhancement
005	Electronic Attenuator (N/A with Option 002)
007	Synthesized Audio Oscillator
008	Pulse Modulation
009	Specified VOR/ILS
010	Reduced-Leakage Configuration
011	2 GHz Internal Frequency Counter
H10	DECT Modulation