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Key Features:

Fully Independent Channels

Each RF output is driven by a separate, internally loaded synthesizer/attenuator module. Up to 4 independently tunable synthesizers can be specified per 1U chassis allowing for the highest integrated channel density available in its class.

Phase Coherent Channels

Holzworth HSX9000 Series synthesizers offer the performance benefits of a proprietary multi-loop architecture with a centralized reference distribution subsystem, which maintains a tight phase coherent relationship across all integrated channels.

The Ultimate In Channel-to-channel Stability

Different from traditional PLL-based synthesizers, Holzworth’s proprietary multi-loop architecture creates precisely synthesized signals that exhibit both instantaneous and long-term stability. Temperature variations between the channels remain the only contribution to drift. The thermally optimized, fan-less chassis was specifically developed for maintaining the lowest possible thermal gradients from channel-to-channel. Channel specific thermal monitoring is available for tracking the relative channel temperature of each loaded synthesizer module.

Key Specifications:

  •  3 GHz Phase Noise: -133 dBc/Hz (10 kHz offset), typical
  •  6 GHz Phase Noise: -127 dBc/Hz (10 kHz offset), typical
  • 12 GHz Phase Noise: -121 dBc/Hz (10 kHz offset), typical
  • 20 GHz Phase Noise: -116 dBc/Hz (10 kHz offset), typical
  • 40 GHz Phase Noise: -110 dBc/Hz (10 kHz offset), typical

The HSX9000 Series offers exceptional phase noise and spectral purity performance as a multi-channel CW signal source. The compact 1U chassis allows for anywhere from 1 to 4 independently tunable channels (frequency / phase offset / amplitude) to optimize channel density within test system racks where real-estate is often crucial. Application specific frequency options can be configured to cover combinations of 10 MHz to 3 GHz, 6 GHz, 12 GHz, 20 GHz, and 40 GHz. Each broadband channel output provides an accurate dynamic range of up to +20 dBm to -110 dBm. Holzworth’s unique multi-loop architecture provides the ultimate in frequency accuracy, channel-to-channel stability and phase coherency.

Product Information


 Software Download


  Available rack mount bracket kits

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+1 (303) 325-3473


2540 Frontier Ave., STE 200
Boulder, CO 80301-2400
United States

Phone: +1.303.325.3473
Fax: +1.866.259.1374


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