The Data Precison Mode! 8200 Calibrator is a precision 6 Vi-digit (1,048,575 counts), microcomputer-controlled, voltage and current standard, providing a completely isolated analog signal from O.tyV to 100V (or up to 1000V with the 1KV option), or 1^A to 100mA, tor the test and calibration of high-precision analog circuits. When enhanced with the optional IEEE488 bus interface, the Model 8200 may be remotely programmed as a voltage or current standard for ATE applications. The Model 8200 is configured in a standard 3V?-inch high, 19-inch wide metal case, suitable for rack mounting (with the rack mounting option, A6. Its light weight of less than 17 pounds, and its universal powering capability (115 or 230Vac) make the Model 8200 a convenient, portable standard for use in a variety of test/inspection environments. 1.2 FEATURES The Model 8200 provides three selectable full scale ranges for dc voltage generation (100mV, 10V, and 100V) and one range scale for dc current generation (100mA). Polarity for each is independently selected by front-panel control, while the decimal point is positioned automatically in the 6Vz -decade display. A field-installable 1KV option provides an extended range up to 1000V. Accuracy of the analog voltage output is within 10ppm of the reading + 1ppm of the full scale range. Accuracy of the current output is within 0.01% of the reading + VA. High speed settling is compatible with the designed use of the Model 8200 as part of a computer-controlled ATE system. Output values settle from one level to the other in the same range within 1ms, and within 15ms when a range change has been made. Stable outputs are designed for Song periods of unattended use. Long-term drift of less than 10ppm may be expected over 60 days. Temperature coefficients over an operating range from 15°C to 35CC introduce 1ppm/°C of reading + 0.2ppm of full scale range on the 10V scale, and 2ppm/°C of reading + 0.2ppm of full scale range on either 100mV or 100V ranges. The dc current temperature coefficient is 10ppm of reading and 2ppm of range. Front-panel controls and the display operate in a “full duplex” mode. That is, the operator indicates his desired change in output to the microcomputer, while the display is controlled directly by the microcomputer, after the change in value has been verified to be a valid one and then transmitted by the microcomputer to the display. Front-panel setup of varying output magnitudes is designed for optimum human-engineered convenience. Each of the 6 decade selectors at the front panel may be operated in either clockwise or counterclockwise (increment or decrement action) without limit so that the output value may be changed by the selected incremental resolution without having to change decade selectors . The instrument performs full carry or full borrow to or from higher decades to the limits of the selected full scale range. Fail-safe operating modes protect the tested components from inadvertent high signals. The Model 8200 returns to 0 when a change in polarity is commanded, or when a range scale is changed. Remote programming is field installable. The IEEE488 bus interface assembly may be installed within the Model 8200 chassis as a user-installable procedure. The assembly is plug-connected within the Calibrator, and the programming has been installed for the remote operation.