Why Does my AQ637X OSA Freeze Every so Often?

The AQ637X OSA has a feature called Auto Offset that it performs every 10 minutes. What this feature does is zero out the OP amps in the OSA to ensure constant level accuracy. This feature will however, stop the OSA from performing any functions during its operation which includes responding to remote control commands.

One workaround is to turn Auto Offset off when performing testing; however this is not a recommended solution as it may affect the accuracy of your measurement. Another workaround, for automated testing, is to lengthen the timeout so that you wait for a response when the offset procedure is being performed. It takes about 30 seconds to complete the offset calibration on most OSAs.

One additional note is that while the OSA is performing Auto Offset, you will see an indication in the lower leftmost corner of the screen.

Related Products & Solutions

AQ6370 Optical Spectrum Analyzer

Yokogawa's AQ6370 Optical Spectrum Analyzer is Re-defining Optical Spectrum Measurement Excellence!

AQ6370B Optical Spectrum Analyzer

High performance with a 20 picometer wavelength resolution supporting 25 GHz DWDM spacing and 40G/100G applications, this OSA also supports non-Telecom applications with a wavelength range from 600nm to 1700nm.

Long Wavelength Optical Spectrum Analyzer AQ6375

Unique LONG wavelength range of 1200 to 2400 nm makes this the world's first and only OSA specifically designed for use in advance applications such as Carbon Monoxide (CO), Carbon Dioxide (CO2) gas detection and LIDAR.

Visible Wavelength Optical Spectrum Analyzer AQ6373

Dedicated SHORT wavelength Range of 350nm to1200nm allows this model to accurately measure the visible spectrum of 380nm to 780nm for bio-sciences and beyond. It is also a popular tool for measuring 1064nm Nd:YAG, DPSS Laser sources.

Optical Spectrum Analyzer

An Optical Spectrum Analyzer (or OSA) is a precision instrument designed to measure and display the distribution of power of an optical source over a specified wavelength span. An OSA trace displays power in the vertical scale and the wavelength in the horizontal scale.

Optical Test Equipment

Optical test equipment or optical measuring instruments are used to measure and characterize the physical properties of light.

Top