The Q8326 optical wavelength meter enables sigh-precision measurement o f laser and light emitting diode wavelengths and frequency. Its characteristics are described below. The key features of the Q8326 are listed below: • Wide measurement ranges for wavelengths and frequencies: 480 nm to 1650 nm, and 181 THz to 625 THz, respectively. • Highly accurate wavelength measurement: ±2 ppm ±l count • Resolutions: 0.001 nm and 100 MHz In AVG mode, resolutions up to 0.0001 nm and 10 MHz can be displayed. • Fluctuation measurements using the deviation measurement function • A high speed sampling rate of 5 measurements/sec • GPIB and D/A conversion analog output is standard.