I/O power supply module A1589

8 independently controllable High Voltage channels Four-quadrant bipolar channels ±2.5 kV / ±500 µA output range SHV coaxial connector Common floating return shared by all channels Low ripple Excellent long-term output stability Under/over-voltage alert, overcurrent and max. voltage protection Interlock logic for unit enable Software Tool for easy channel management Overview The A1589 board contains 8 independent channels providing high-voltage through SHV connectors; it is compatible with the CAEN Universal Multichannel Power Supply System (SY1527, SY2527, SY4527, SY5527). All channels are differential and can operate in the so called four-quadrant regimes supplying or operating as resistive load. It can provide, with an excellent long term output stability, a maximum voltage of ±2.5 kV and a maximum current of ±500 µA. It ensures a voltage stability within 10 mVpp, with 100 mV setting resolution. Moreover, the channels share a common floating return, which allows on-detector grounding reducing the noise level; the floating return is insulated from the crate earth up to ±50 V (with a 65V hardware limit). The board is provided with both current and voltage protections. If a channel tries to draw a current larger than its programmed limit it is signalled to be in Overcurrent condition; the power supply system detects this state as a fault and reacts according to the setting of the TRIP parameter, namely: TRIP = 1000 s: when the set output current value is reached the channel behaves like a constant current generator. TRIP < 1000 s: the output current keeps the set value only for programmed time interval and then is switched off.