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5517BL Laser Head

Product Status: Obsolete | View Service Options
This product is no longer available

A replacement for this product is available:

Key Features & Specifications


  • Maximum velocity with linear optics: 500 mm/s
  • Reference frequency: 1.9 to 2.4 MHz ; option H10: 2. 2 to 2.4 MHz & > 400 µW available
  • Weight: 3.4 kg (7.5 lb)
  • Warm up time: 45 minutes if fan and exhaust connected to the vented cover

Laser Beam

  • Diameter: 6 mm
  • Minimum output power: 120 µW
  • Maximum output power: 1 mW
  • Beam height: 80.8 ± 1.0 mm

Input Power Requirement

  • +15 V ± 0.3 V at 3.0 A maximum
  • -15 V ± 0.3 V at 0.3 A maximum


The Keysight 5517BL is used primarily in VME and PC based laser interferometer systems where the velocity of motion is slower, such as machine tool applications. The 5517BL is identical to the 5517B except that it includes venting cover to allow forced air cooling to reduce the power dissipated into the application. Please contact Keysight for custom requirements.