P301 is a pulse height analyzer equipped with one 18-bit A/D converter. P301 has two input connectors and can simultaneously obtains the pulse heights with the different shaping times. Users can create energy spectrum data (histogram of pulse height data) and the list data (timestamps and pulse heights for all events) from P301.
● P301 is equipped with one high-precision 18-bit successive approximation A/D converter. This achieves good linearity with practically used 10-bit (1024 steps) or 12-bit (4096 steps) data acquisition. 18-bit data is transferred to the host computer.
● Not only the easy bus power connection is available, but also the electrically isolated power supply with the host computer can be used. P301 is equipped with a built-in digital isolator IC.
● The control and the data readout of P301 is carried out using UART (Universal Asynchronous Receiver Transmitter) interface. Users take control of the P301 in preparing a serial interface on the host computer. The P301 can perform basic control and measurement using the included software. In addition, the P301 control commands are provided to users, and can be operated with applications created by users.
● The user can set the time from trigger to A/D conversion start. This implies that the timing can be set to match the shaping time of the input signal. The trigger level is easily set using an easy-to-operate, multi-turn potentiometer located on the front panel.
● Multiple A/D conversions for one event are performed in P301. This function reduces the noise (does not eliminate the noise in the input signal). This function also can be used to detect abnormality of the signal such as a pile-up. Specifically P301 sends the abnormality flag with the data when detecting the fluctuation in the multiple A/D conversion values.
P301 Specifications
| Item | Specification | Remarks |
| A/D conversion section | Resolution: 18-bit DNL：+/- 0.8 LSB INL：+/- 3.2 LSB Reference voltage: +4.1 V A/D conversion time: 12 µs (Total time of 8 times conversions for one event) Time from trigger to A/D start: 1.4 µs, 3 µs, 5 µs, 10 µs, 20 µs | Resolution and linearity are the specifications of the A/D conversion chip. |
| Time stamp | Length: 32-bit Clock: 96 MHz、1.5 MHz、93.75 kHz are selectable | The count of overflows can be added to the list data. |
| Serial communication section | Baud rate (Maximum throughput): 115.2 kbps (1 kcps) 2 Mbps (16 kcps) 3 Mbps (25 kcps) 12 Mbps (33 kcps) are selectable | The throughput values are when the wait time from trigger to A/D conversion is set to 5 µs. |
| Signal input section | Input voltage range: 0 V – +4.1 V Input impedance: 10 kΩ | Tolerable voltage range: -0.5 V ～ +5.25 V |
| Gate control | Logic: PHA ON when High level | P301 has a built-in photocoupler |
| Power supply | DC 5 V +/- 5%, 100 mA | Powered by USB bus power or self-powered, using USB Type-C connector |
| Dimension | 100 mm x 30 mm x 130 mm | Excluding connectors and a knob |
| Weight | 340 g |
P301 price: JPY 218,900 (Tax included)