Product Description

his A/D Converter & Multiplexer card is used in the Basic Controller, Extended Controller, and Multifunction Controller. It accepts 16 analog inputs of 1 to 5 volts and converts them to 12-bit digital words for use by the CPU. Test points and potentiometers are present on the card edge to be used during calibration and adjustment. Adjustments Location Description R1 Low test V adjustment TP1 Low test V equal to 1.000 VDC referenced to A/D sense line R2 High test V adjustment TP2 High test V equal to 5.000 VDC referenced to A/D sense line TP3 Internal test for A/D converter, is equal to 5.000 VDC, referenced to common R3 Internal span voltage adjustment TP4 Internal span voltage for A/D converter, equal to 9.550 VDC, referenced to common TP5 A/D sense line, same as signal common TP6 Power supply common (PSC) TP7 Internal zero voltage converter, equal to 3.430 VDC, referenced to common R4 Internal zero voltage adjustment R5 Internal reference voltage adjustment