The PDM USB Series Photodetector Module represents a significant advancement in photodetection technology, offering enhanced performance and versatility for various applications. These modules are available in both cylindrical and rectangular formats, allowing for flexibility in integration and installation. With a choice between 25mm and 30mm diameter photomultiplier tubes (PMTs), the PDM USB Series is designed to meet the demands of precision light detection.

One of the standout features of the PDM USB Series is its ability to operate in three distinct counting modes: pre-set number of channels, pre-set total measurement period, or continuous mode. This adaptability ensures that the module can be tailored to specific experimental or operational requirements. Additionally, the modules are equipped with a facility for attaching a light fiber guide, further enhancing their usability in complex setups. The USB connectivity not only simplifies power management—eliminating the need for an external power supply—but also provides an intuitive interface for configuring operating voltage and threshold levels through the supplied software.

The PDM USB Series excels in dynamic range, with a sophisticated dead time correction mechanism that maintains accuracy even at high count rates. This correction ensures that the deviation from linearity remains within +5% at 100 million counts per second (Mcps), making it highly reliable for demanding applications. The modules are engineered with magnetic and electrostatic shielding to minimize interference, and they offer low noise operation, which is critical for achieving precise measurements. Moreover, the option for fiber coupling expands the module's applicability across a wide range of spectral ranges, enhancing its versatility in different environments.