Frequently Asked Questions

The Photodetector Module PDM04-9113-USB is a USB photodetector module that is available in cylindrical or rectangular format with a choice of 25mm and 30mm diameter PMT’s.

There are three software configurable counting modes available with the Photodetector Module PDM04-9113-USB: pre-set number of channels, pre-set total measurement period, or continuous.

Yes, the Photodetector Module PDM04-9113-USB has the facility to attach a light fibre guide (not supplied).

The features of the Photodetector Module PDM04-9113-USB include easy plug-and-play operation, wide dynamic range, no external power supply required, magnetic and electrostatic shielding, spectral range options, low noise, and fibre coupling possible.

Dead time correction can be used with the Photodetector Module PDM04-9113-USB to compensate for departure from linearity at high count rates due to pulse pile-up. Dead time may be corrected for using the formula N = n/(1-nT).

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