The user-switchable 50 Ω or 10 kΩ load resistor lets you optimize for response time or sensitivity. Choose a nanosecond response time with 50-V/A sensitivity, or a slower response time with a higher 10,000 V/A sensitivity. The nanosecond rise time at the 50-Ω load setting is fast enough to see your Q-switched pulses. Or use the 10-kΩ resistor setting for alignment purposes and for detecting lower-power pulses and cw light. The open-circuit setting allows you to choose the optimal gain-bandwidth combination by connecting a user selected external load resister.

Newport offers accessories that can be used to attach a filter or optical fiber to these photoreceivers. For example, a colored glass filter to remove unwanted wavelengths or a neutral-density filter to attenuate the optical power incident on the photodetector can be mounted with the filter holder accessory. Model is an FC fiber adapter that allows an FC-connectorized fiber to be attached in front of these photoreceivers. Both accessories are sold separately and not included with the photoreceiver.