Advantest Q7606B

The Advantest Q760B is a lightwave modulation test set, used together with a digital sampling oscilloscope, to separately measure and evaluate the chirp (frequency-modulated/FM) and intensity-modulated (IM) components of incident laser light.

The Q7606B contains two sets of fiber-type Mach-Zehnder interferometers and their control circuits.

The Q7606B can selectively output the sum of or difference between the frequency-modulated/FM and IM components of the modulated incident light by switching the measurement mode.

The sum (IM+FM) and difference (IM-FM) data are processed by the digital sampling oscilloscope and the personal computer to separate the chirp FM and IM components from each other, thus making it possible to evaluate the time domain characteristics.

Measuring the dynamic chirp characteristics using the Q7606B requires an O/E converter, a digital sampling oscilloscope, and a personal computer. Software for measuring and evaluating the dynamic chirp characteristics is optionally available.
When cleaning the Q7606B, wipe it with a soft cloth moistened with alcohol.

A soft cloth moistened with alcohol must be used to clean the Q7606B. Solvents such as benzene, toluene, or acetone must be avoided as they may damage plastics.

If the Q7606B is not in use for a long time, cover it with a vinyl sheet or place it in a carton and store it in a dry place out of direct sunlight. The storing conditions for the Q7606B are: a temperature of -20 to +60 deg C and a relative humidity of 90% or less.

Although the Q7606B has been designed to be durable against AC line noise, care should be taken to minimize the AC noise at the site where the Q7606B is installed. If necessary, use a noise elimination filter.

The permitted power voltage range is 90 to 250 V and the permitted power frequency range is 48 to 66 Hz.