DT5521HE

The CAEN Mod. DT5521HE is a desktop module housing 4 independent high voltage power supply channels, each delivering up to 6 kV and 20 µA. The unit is available with either positive or negative output polarity, as well as in a mixed version with 2 positive and 2 negative channels.

The HV outputs are delivered through Radiall R317580 SHV coaxial connectors; for further technical information, consult our connectors reference page. Ramp-up and ramp-down rates can be set independently for each channel from 1 to 500 V/s in 1 V/s steps. The module offers 100 pA Imon resolution, which can be extended by a factor of 10 in a lower range selectable via software.

All functional parameters can be programmed and monitored via USB 2.0 or Ethernet, and a complete set of software tools is available to control the unit, from low-level libraries to graphical application software.

The module also includes dedicated safety features that allow it to operate as a current generator. A common safety board interlock logic enables or disables the channels globally, while individual input signals provide a kill function for each channel. An overvoltage and undervoltage warning is issued when the output voltage differs from the programmed value (±0.5% of the set value, ±3 V). When a channel attempts to exceed its programmed current limit, it is flagged as being in “overcurrent” and enters TRIP status: the output voltage is adjusted to keep the current below the programmed limit for a programmable TRIP time, after which the channel is switched off. If TRIP is set to “constant current mode”, the channel behaves as a current generator. Programmable hardware VMAX and IMAX protection limits are also available.