The TREND Networks TIA525I-FS-300 Optical Receiver is a convenient and easy to use Optical-to-Electrical (O/E) Converter. This unit is extremely useful in a variety of laboratory and field service situations where a quick check of the operation of a laser source, optical transmitter, or the output of a fiber optic communications link is required. This unit conveniently mounts directly on the vertical input BNC connector of the user's oscilloscope, digitizer, or other readout device.

The Indium-Gallium-Arsenide (InGaAs) detector covers the 900 to 1700 nm spectral region. Gains are selectable and provide peak responsivity values of approximately 1000 to 100,000 volts per watt. AC coupling between stages may be introduced in order to examine weak high frequency optical signals in the presence of a strong DC optical component. The unit's electrical bandwidth exceeds 125 MHz in the low and medium gain configurations and exceeds 35 MHz in the highest gain configuration.

The unit’s output stage is fully capable of driving a 50 ohm coaxial cable terminated in the characteristic impedance. An unmounted detector is included so that the unit may be used with free space beams. Powered by an internal 9V Lithium battery, or the universal power supply, this unit is both handy to use and store.