Name：Keysight 86122C

Features • Enhanced stable helium-neon (HeNe) reference laser source with double the service life • Includes a 5-year warranty covering the entire instrument and all components • Absolute wavelength accuracy: ±0.2 ppm • Differential wavelength accuracy: ±0.15 ppm • Wavelength scanning time < 0.5 seconds • New functional feature: With the fast update option, the wavelength scanning time is < 0.3 seconds