The UEI-STP-AO-200 is a unity gain, high current output buffer board for use with DNA-AO-308 and PD2/PDXI series analog output boards. The board offers a gain of 1 ±0.2% and drives up to 250 mA at ±10 Volt. The unit requires the user to supply a ±13 to ±15 volt power supply with current capability to support the output current required. Those who perfer not to supply bipolar power should order the UEI-STP-AO-200D, which includes a DC/DC converter and requires a +9V to +36V power supply.