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- The PDA-750 is a low noise, high gain, transimpedance amplifier and current meter that is designed to provide a direct digital readout of the current generated from a photodiode, photomultiplier, or similar current source. It provides for digital entry of detector responsivity in units of Amps/Watt which enables it to be used as a sensitive, high precision optical power meter. It also incorporates a digitally controlled bias source (from -14 to +14 volts) that may be switched to be in series with the detector under test. This permits in-circuit detector biasing as well as easy measurement of detector leakage currents. A serial port is supplied that allows the user to both control the unit and log data.
Key Benefits
- 8 Decade Dynamic Range
- Less than 1 pA noise
- 1 part in 20,000 Resolution
- Analog output voltage proportional to current input
- Full scale input range of +/- 20 nA to +/- 20 mA
- Variable bias is digitally selectable from - 14V to + 14V
- Bi-directional Rs-232 serial port
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