835 In Stock

The 835 by Newport is a Laser Pico-Watt Digital Power Meter is a precision instrument designed for fundamental optical power measurements in benchtop settings. This sophisticated power meter proves indispensable in compensating for ambient light and dark current effects, while also enabling logarithmic and ratio measurements for accurate optical assessment. To extend its functionalities, the 835 offers compatibility with the optional 835-IEEE interface, enhancing its capabilities. Operating on rechargeable sealed nickel cadmium batteries encased within a compatible battery pack, this power meter guarantees up to five hours of uninterrupted usage.

The 835 features direct current (DC) optical power assessment, employing fundamental measurement techniques. The device seamlessly incorporates a bar graph display, facilitating measurements in decibels, and incorporates Null and Reference functions for precise readings. With a 50-segment bar display boasting zoom and offset controls, the 835 enables qualitative monitoring of signal level variations. This analog-like display, with adjustable range and zero offset, derives its input from the digital display value, catering to both linear and logarithmic modes. Users can define the display resolution using the zoom control, while the offset function allows zero adjustments for the bar and digital displays.

The comprehensive 835 system encompasses a photodetector and an electronic display. The photodetector, linked to the electronic display via a standard BNC connector cable, utilizes a semiconductor photodiode. This photodiode generates current proportional to incident light on the detector, operating without bias to mitigate dark currents and shot noise. The ensuing current is precisely measured by the electronic display and subsequently translated into optical power units. Notably, the 835 incorporates a current-voltage converter followed by an analog-to-digital (A/D) converter. This A/D converter transforms conditioned analog input signals into a format compatible with the embedded microcomputer