he Model 6220 DC Current Source and Model 6221 AC and DC Current Source combine ease of use with exceptionally low current noise. Low current sourcing is critical to applications in test environments ranging from R&D to production, especially in the semiconductor, nanotechnology, and superconductor industries. High DC power supply sourcing accuracy and built-in control functions make the Models 6220 and 6221 ideal for applications like Hall measurements, resistance measurements using delta mode, pulsed measurements, and differential conductance measurements.

• Source and sink (programmable load) 100fA to 100mA
• 1014Ω output impedance ensures stable current sourcing into variable loads
• 65000-point source memory allows executing comprehensive test current sweeps directly from the current source
• Built-in RS-232, GPIB, Trigger Link, and digital I/O interfaces
• Reconfigurable triax output simplifies matching the application's guarding requirements
• Model 220 emulation mode eliminates need to reprogram existing applications

• Model 7006-1 Single Shielded GPIB cable, one feed through and one straight on connector, 1m (3.3 ft)  
• Model 7006-2 Single Shielded GPIB cable, one feed through and one straight on connector, 2m (6.6 ft)  
• Model 7078-TRX-5 Low-Noise Triax Cable, 1.5m (5ft) (for Models 236, 237, 238, 6514, 6517A, 7072)

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