The 4142 B is a system-use dc measurement instrument designed for high throughput dc semiconductor testers. It features eight plug-in module slots which can accommodate any combination of available modules. Features and Specifications Wide measurement range with high resolution: V: ±4 µV to ±1000 V, 0.05%; I: ±20 fA to ±10 A, 0.2% Pulse Measurement capabilities: pulse width 1 ms to 50 Ms, 100 µs resolution High speed measurement (typical): source or monitoring 4 Ms; Vth, hFE extracting 12 Ms Internal memory: program memory >500 commands; data memory 4004 measure points HP-IB interface