The Analogic AN2570 is a bipolar 3½-digit (±1999 counts) full performance digital panel instrument. Low cost, without loss of desirable instrumentation features, is made possible through state-of-the-art LSI technology and Analogic's years of leadership in digital panel instrumentation design. A full scale input range of ±1.999 volts or ±199.9mV, coupled with four available power configurations, (two DC and two AC) make the AN2570 universally applicable. Instrumentation features such as a bipolar differential input, 50 picoAmps of bias current, automatic zero correction and a virtually "blow-up-proof" signal input front end make it easy to use. A host of Interface and control signals, including parallel BCD data output, provides maximum versatility for today's instrumentation design. The displays are designed for maximum readability. Up close, several feet away, or off at an angle, the four large, red LED digits are bright, clear, crisp and free from glare and interpretation problems even under high ambient light conditions. If an input overload condition occurs, all four digits are automatically blanked to prevent an erroneous reading; however, the polarity sign and decimal point remain on to show that the instrument is working properly.