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This amplifier unit is a low noise, high gain, transimpedance amplifier that is designed to provide a direct digital readout of the current generated from a photodiode, photomultiplier, or similar current source. If a reading in Watts is desired, simply toggle the A/W setting. By adjusting the A/W setting on the amplifier to equal detector responsivity, the amplifier can measure the incident optical power. For detectors that require a reverse bias, the unit can apply a selectable bias in series with the photodetector.
An output voltage port provides a ±2V full-scale analog signal directly proportional to the LCD display reading. For noise-sensitive measurements, the unit can be disconnected from its external supply and powered from its internal batteries. Battery low indicator is activated on the LCD when batteries need recharging via included power supply. Universal power supply includes wall connectors for US, UK, Europe and Australia.