The DX-390 provides a bright 3-1/2 digit red LED digital read-out of the current being sourced to allow the user to make accurate settings as desired for the application. The display can be calibrated either in mA, or in percentage, or in any unit desired. A ten-turn potentiometer on the front panel allows the operator to set the output current to a very high accuracy level. Zero and Span settings for the digital display are also provided on the front panel.

The Digital Current Source is offered in a panel mounting execution in standard ΒΌ DIN enclosures. The instrument is also available in a Desk-top execution.