Abstract: A system for calibrating a spectrophotometer includes a spectrophotometer, including a network communication interface, operating in a plurality of modes and producing and implementing diagnostic information. A network communicates with the spectrophotometer via the network communication interface. A remote processor is enabled to communicate with the spectrophotometer directly via the network communication interface. Alternatively, a spectrophotometer having a thin client is disclosed that can operate independently of a local PC.

Abstract: A circuit for protecting the contents of memory devices, each having a power supply voltage input terminal and a disabling signal input terminal following a failure in an A.C.-derived D.C. potential in which respective time delay circuits couple battery potential to said power supply voltage terminals and to said disabling signal input terminals at respective predetermined times after said failure.

Abstract: A controller controlling the dispensing of paper currency including a microprocessor for controlling motors which feed a predetermined mix of paper currency from each dispensing device to a common acceleration device which advances bills to an output stacker. Each individual dispensing device dispenses the proper number of bills to the acceleration device. Apparatus multiplexes the control signals to the stepper motor. After the bills have been dispensed, the stepper motor is halted, and a home positioning sensor determines if the stepper motor has been halted in the proper position. Sensors provided at spaced intervals along the common acceleration device determine if bills have reached the acceleration device. The dispensing operation is repeated if bills do not reach the sensor. The sensors perform the dual function of sensing advancement of a bill and detecting overlapping or multiple fed bills. The adaptive technique conmpensates for changes in the sensor such as component aging and dust accumulation.

Abstract: A controller controlling the dispensing of paper currency including a microprocessor for controlling motors which feed a predetermined mix of paper currency from each dispensing device to a common acceleration device which advances bills to an output stacker. Each individual dispensing device dispenses the proper number of bills to the acceleration device. Apparatus multiplexes the control signals to the stepper motor. After the bills have been dispensed, the stepper motor is halted, and a home positioning sensor determines if the stepper motor has been halted in the proper position. Sensors provided at spaced intervals along the common acceleration device determine if bills have reached the acceleration device. The dispensing operation is repeated if bills do not reach the sensor. The sensors perform the dual function of sensing advancement of a bill and detecting overlapping or multiple fed bills. The adaptive technique compensates for changes in the sensor such as component aging and dust accumulation.

Abstract: A controller controlling the dispensing of paper currency including a microprocessor for controlling motors which feed a predetermined mix of paper currency from each dispensing device to a common acceleration device which advances bills to an output stacker. Each individual dispensing device dispenses the proper number of bills to the acceleration device. Apparatus multiplexes the control signals to the stepper motor. After the bills have been dispensed, the stepper motor is halted, and a home positioning sensor determines if the stepper motor has been halted in the proper position. Sensors provided at spaced intervals along the common acceleration device determine if bills have reached the acceleration device. The dispensing operation is repeated if bills do not reach the sensor. The sensors perform the dual function of sensing advancement of a bill and detecting overlapping or multiple fed bills. The adaptive technique compensates for changes in the sensor such as component aging and dust accumulation.

Abstract: A self-contained air conditioner unit of the type divided into indoor and outdoor chambers and, more particularly, to a venting system including a duct having an air directional valve system wherein in a vent mode a first passageway is provided for directing a portion of outdoor air being recirculated by the condenser fan into the indoor chamber, and a second passageway arranged in the no-vent mode to provide a substantially unobstructed outdoor air flow to the condenser.