Frequency Hopping Synthesizer is used in microwave band wireless systems, which require the local frequency with low phase noise and high stability. Since low phase noise OCXO is loaded for reference. It is unnecessary for the external reference oscillator to feed reference signal to unit. FHSZ8588 comes with three output ports, covering 60 MHz in port 1, 1080MHz in port 2, and 8.56 - 8.86 GHz in port 3 (Output frequency is generated by using 30 MHz Frequency Step Hopping method). In 8.56 - 8.86 GHz range, DRO (Dielectric Resonator Oscillator) and SPD (Sampling Phase Detector) is applied to create PLL to maintain low phase noise characteristics. Interface is configured with 9-pin D-Sub, which includes DC power frequency setting TTL (+5V High, 0V Low) with one strobe. All three output power ports comes in 50 ohms SMA connectors.