A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the KEITHLEY 486 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   KEITHLEY 486   Description / Specification:    
KEITHLEY 486 Autoranging Picoammeter

The Keithley 486 is a 51/2-digit autoranging picoammeter designed for low-current applications where fast reading rates must be made. The 486 is ideal for low-level DC current applications. Selectable analog and digital filters provide optimum wide-band performance with minimum noise. Autoranging selects the most appropriate range within 100ms. The measurement buffer holds up to 512 readings for fast data acquisition. Any reading within the buffer may be displayed, or the entire buffer may be searched for the maximum and minimum values. Other important features include REL, which allows measurements to be made relative to a selectable baseline. ZERO CHECK and CORRECT functions correct for voltage offset errors using front panel or software commands. The IEEE-488 interface provides simple integration and convenient user interaction. Digital calibration can be accomplished over the bus or completely from the front panel. The display features three selectable intensities (bright, dim, and off) for use in light-sensitive environments. Specifications. Ranges: 2 nA, 20 nA, 200 nA, 2 µA, 20 µA, 200 µA and 2 mA. Lowest Range: 2 nA; Resolution: 10 fA; Accuracy (1 year), ±(%rdg+offset): 0.3 + 500 fA. Highest Range: 2 mA; Resolution: 10 nA; Accuracy (1 year), ±(%rdg+offset): 0.1 + 200 nA. Maximum Overload: 350V peak on nA ranges and 2µA range; 50V peak on 20µA, 200µA, and 2mA ranges. Higher voltage sources must be current limited at 3mA. Input Voltage Burden: <200µV (18°–28°C) for inputs <100µA; <2mV for inputs >= 100µA; 20µV/°C temperature coefficient. Temperature Coefficient (0°–18°C & 28°–50°C): ±(0.15 × applicable accuracy specification)/ °C. NMRR: >60dB at 50Hz (LINE 50Hz integration) or 60Hz (LINE 60Hz integration). Analog Output Range: ±2V for full range input (non-inverting). Analog Output Accuracy: ±(2.5% + 3mV); resistive loads >2kO; 18°–28°C. Analog Output Impedance: <100 ohm, DC–2kHz. Ranging: Automatic or manual. Autoranging Time: <200ms to final range (analog filter OFF).


Standard Calibration $205.00 *
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*This is a Web introductory price for one calibration of the KEITHLEY 486. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.

Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Clipping is the limiting of a signal so that it never exceeds some threshold.

Line Regulation
Line regulation is the capability to maintain a constant output voltage level on the output channel of a power supply despite changes to the input voltage level.

Peak Envelope Power
Peak envelope power is the maximum value of the envelope power. Envelope power is measured by making the averaging time much less than 1/fm where fm is the maximum frequency component of the modulation waveform. The averaging time is therefore limited on both ends: (1) it must be small compared to the period of the highest modulation frequency, and (2) it must be large enough to be many RF cycles long.

RMS or root mean square is a statistical measure of the magnitude of a varying quantity

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