KEITHLEY 248 CALIBRATION and KEITHLEY 248 REPAIR

 
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 248 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 248   Description / Specification:    
KEITHLEY 248 5000V 5mA High Voltage Power Supply

The Keithley 248 High Voltage Supply, designed for use in the laboratory or for test applications, features reversible polarity, excellent regulation, and low output voltage ripple. The digital displays provide accurate readings of voltage and current, and digital entry of current and voltage values allow easy, precise setting of output values. Output voltage can be set from the front panel, via a remote analog voltage, or over the standard IEEE-488 interface. Voltage and current signals are also available for remote monitoring. Specifications. Output Voltage: 0 to ± 5000 V DC. Maximun Output Current: 5.000 mA DC. Voltage set Accuracy: ±(0.01% of setting + 0.05% of range). Voltage Display Accuracy: Voltage Set Accuracy ±1V, typical (±2V, max.). Voltage Resolution: 1V (set and display). Voltage Resettability: 1V. Voltage Limit Range: 0 to 100% of full scale. Voltage Regulation Line: 0.001% for ±10% line voltage change. Voltage Regulation Load: 0.005% for 100% load change, typical. Current Limit Accuracy: 0.01% + 2.5µA. Current Resolution: 1µA. Current Display Accuracy: Current Set Accuracy ±1µA, typ. (±2µA, max.). Stability: ±0.02% per hour typical for ambient temperature within 2°C. Temperature Drift: 50ppm/°C, 0° to 50°C, typical. Monitor Outputs; Output Scale: 0 to +10V for 0 to full range output regardless of polarity. Current Rating: 10mA maximum. Output Impedance: <1ohm. Accuracy: ±0.2% of full scale. Update Rate: 8Hz. External Vlotage Set; Input Scale: 0 to +10V for 0 to full range output regardless of polarity. Input Impedance: 1M-ohm. Accuracy: ±0.2% of full scale. Update Rate: 16Hz. Output Slew Rate: <0.3s for 0 to full range under full load.



 

Standard Calibration $295.00 *
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*This is a Web introductory price for one calibration of the KEITHLEY 248. 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.

dBc
dBc (decibels relative to the carrier) is the power ratio of a signal to a carrier signal, expressed in decibels. If the dBc figure is positive, then the relative signal strength is greater than the carrier signal strength. If the dBc figure is negative, then the relative signal strength is less than carrier signal strength.

Load Regulation
Load regulation is the capability to maintain a constant voltage (or current) level on the output channel of a power supply despite changes in the supply's load (such as a change in resistance value connected across the supply output).

Power Linearity
When changing the power level and measuring the differences (in dB) between actual and displayed power levels, the power linearity is ± half the span (in dB) between the maximum and the minimum value of all differences.

Settling Time
Settling time of an output device is the time elapsed from the application of an ideal instantaneous step input to the time at which the amplifier output has entered and remained within a specified error band, usually symmetrical about the final value.


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