It is excellent for testing when accurate, variable voltages are necessary both on the bench or factory floor. These might include testing a phone card for effects of battery voltage changes, PA testing, and VCO tuning curves. The card is an internal, ISA PC card. It uses the PC's own 12 and 5V buss supplies and converts them to the desired output. The cards also send DC current information when polled.
Current is in eight bit resolution.
Sample code and programs in C are provided for general testing and control functions right out of the box. Custom configurations are available . The design handles filters from KHz to GHz. Butterworth, Chebychev, minloss, Bessel, and Gaussian polynomials are all accommodated. Output of the program includes, attenuation, return loss, VSWR, input impedance and admittance, group delay, phase deviation from linear, and temperature variation effects.