GE DS3820SFEB Matrix switch card

As of ROM version 1.96, the Nova II meter will recognize if a sensor had been connected or disconnected while the device is powered on. If such an event happens, a warning screen will be displayed for 3 seconds, after which the Nova II will restart itself in its new configuration. Thus if a user wants to change sensors during his experiment he no longer needs to power down the Nova II to do so.

Operation with Thermopile Absorber Sensors  

Warning: Before using the sensor for power or energy measurement, check that your laser power, energy and energy density do not exceed the sensor ratings. See Table 5. and Table 6. in Chapter 10. If the sensor is a water-cooled type, ensure that the cooling water is flowing at an adequate rate; see table below. Also, note that the reflectance from the absorber could be as much as 10% and with CO2 lasers, the reflected beam can be quite specular, so it is advisable to provide a beam stop for the reflected beam with the highest power lasers.

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