Saelig has introduced the CircuitMaster 4000M Precision Active Oscilloscope. It combines the power of a 100 MHz 10-bit DSO and a 0.1% accurate digital voltmeter, with unique test techniques to provide multiple circuit diagnostic capabilities in a single unit. Designed to simplify the safe investigation of fine pitch PCBs, the CircuitMaster 4000M is unlike any other oscilloscope (usually 8-bit devices), providing innovative test and measurement functions for detailed circuit analysis. With two analog input channels, as well as an external trigger, the CircuitMaster 4000M also offers four adjustable-threshold digital inputs for logic signals, making it useful for mixed signal applications. For multiple signal acquisition, a 40-channel connector is provided for use with IC or PCB connectors. This accessory can be used as dual 20-channels for real-time signal acquisition and comparison.