The XG /XTR Family Programmable DC Power Supply provides stable, 
variable output voltage and current for a broad range of development and 
system requirements. The power supplies have a high power density and 
numerous industry standard interfaces: 
  RS-232, RS-485, analog programming (APG), and USB built-in 
ports. 
  Optional GPIB or Ethernet (ENET), isolated analog programming 
(ISOL), control for remote operation and readback. 
  Seamless switching between front panel and any digital interface 
(RS-232, RS-485, USB, GPIB or ENET). 
  Simultaneous digital displays for both voltage and current.  
  Front panel control by rotary Adjust/Enter knob, permitting high 
resolution output setting. 
  Active Power Factor Correction (PFC) reduces input current and 
input current harmonics. 
  Automatic crossover system allowing the power supply to switch 
between Constant Current, Constant Voltage and Constant Power 
(available in version 2.21 and higher) operating modes. 
  Parallel or series connection among multiple units to produce 
greater diversity or to use in higher power applications. 
  Short-circuit protection of DC outputs provideing greater operating 
safety. 
  Built-in APG and ISOL (optional) interface to provide a 
galvanically isolated analog voltage control of the output, 
master/slave output tracking, and remote Enable/disable for safety 
and precision. 
  Remote output voltage sensing to automatically compensate for 
cable losses. 
  Software calibrated. 
  Three user setting memory locations. 
  M10 Option preprograms the voltage to reset to zero upon power on 
and upon output enable.