N957

Overview

The Mod. N957 is a 8k Multi-Channel (MCA) with USB port, housed in a 1-unit wide standard NIM module. The multichannel analyzer performs the essential function of collecting the data and producing output, in the form of converted value of input peaks. The input pulses can be those produced by a standard spectroscopy amplifier. They can be Gaussian, semi-Gaussian or square waves, unipolar (positive) or bipolar, in a range from 0 to 10 V, with a rise time greater than 0.1 µs. The trigger can be made “on signal” (Auto Gate mode) or “external” (External Gate mode). In the first case a discriminator, with a settable threshold, enables the conversion. In the second case, an external gate is fed to the module, via front panel GATE In connector. The input channel has one peak amplitude stretcher, the output of which is digitised by a 13 bit fast (0.8 ms) ADC featuring a sliding scale technique, to improve the differential non-linearity. Converted waveforms are stored into a 64 KSamples buffer memory. The unit hosts an USB2.0 port (also compatible with USB 1.1), which permits a simple control and data-acquisition via PC.
Libraries for Windows and Linux will be provided as well. Future firmware upgrade is possible via USB.