The C9525 series is a bench-top type multipurpose power supply incorporating a high voltage power supply (maximum output of +2000 V/-2000 V for a photomultiplier tube) and constant voltage power supplies (5 V and 15 V for peripheral devices such as Hamamatsu amplifier units and photon counting unit). The four digit digital voltmeter on the front panel shows the output value of high voltage with high accuracy.