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Electronic Design

AC/DC Voltage Reference Is Accurate

The Model 306 ac/dc voltage reference is an accurate source of positive or negative dc voltage and 1000 Hz ac voltage. It uses a microprocessor to control a pair of digital-to-analog converters-- one for dc output, the other for ac. The left and middle front panel push-button switches increment and decrement the digital count to the DACs and thus vary the output voltage. The right pushbutton changes menus on the lower line of the LCD display for selecting voltage range, mode and dc polarity. A two-line LDC display shows output voltage, range and mode on the top line with programming menus on the lower line. The instrument can also be controlled from a PC over an RS-232 serial connection. MS-DOS and Windows software allows the user to program voltage step size and step duration. Single quantity pricing is $359.


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