The Keithley 4200-PA Remote Preamplifier Module extends the low-current measurement capabilities of the Keithley 4200-SCS Parameter Analyzer by adding five additional current ranges and enabling measurements down to 0.1 fA resolution. By positioning amplification circuitry near the signal source, the module minimizes noise and signal degradation over cable runs. It integrates transparently with compatible SMUs and can be factory-installed locally or mounted remotely on a probe platen or within a shielded enclosure for further noise mitigation.
## Technical Specifications
• Current measurement ranges added: 10 nA, 1 nA, 100 pA, 10 pA, and 1 pA
• Measurement resolution: 0.1 fA
• Shunt resistance (force to common): >10¹⁶ Ω (1 pA and 10 pA ranges); >10¹³ Ω (100 pA–100 nA ranges)
• Guard output impedance: 100 kΩ
• Maximum guard capacitance: 1500 pF
• Maximum shield capacitance: 3300 pF
• Output terminal connection: Dual triaxial connectors
• Noise characteristics (typical):
– Voltage source: 0.01% of output range (rms)
– Current source: 0.1% of output range (rms)
– Voltage measure: 0.02% of measurement range (peak-to-peak)
– Current measure: 0.2% of measurement range (peak-to-peak)
• Weight: 1.36 kg (3 lbs)
• Operating altitude: At or below 2,000 m (6,562 ft)
• Operating temperature: 0 °C to 50 °C (32 °F to 122 °F)
• Operating humidity: 5% to 60% RH
• Pollution degree: 1 or 2
## Key Features
• Five-decade current range extension for ultra-low current detection
• Dual installation modes: factory rear-panel mount or remote positioning
• Remote mounting capability via Model 4200-RPC-X cabling
• Triaxial output connectivity for shielded measurements
## Compatibility & Integration
Designed for integration with the Keithley 4200-SCS Parameter Analyzer and compatible Source-Measure Units (4200-SMU, 4210-SMU).
