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This instrument is of solid-state, hybrid design with a long history of reliability. The fundamental design is conceptually simple and straightforward. The Model CR-103/J is comprised of two complete instruments. The dc voltage section is an ultra-stable, chopper stabilized amplifier with selectable precision resistors in the feedback loop. The temperature compensated, aged zener diode is the reference for the entire instrument. The dc current section is essentially the same configuration plus a precision, reference resistor. Years of experience, experimentation and testing has produced this fine instrument.
Current Mode:
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Variable Constant DC Current: Two ranges, ±10nA to ±100mAdc
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High Resolution: ±0.0001% (1ppm) of both ranges
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Minimum selectable setting: 10nA
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High Accuracy: (I Mode): ±(0.005% of setting + 0.0005% of range)
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Compliance (Power): ±100V (available on both ranges)
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Noise: <2µA
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Calibration Cycle: 12 months
Voltage Mode:
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Variable Constant DC Voltage: Three ranges, ±100nV to ±10Vdc.
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High Resolution: ±0.0001% (1ppm) on all three ranges
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Compliance (Power): ±50mA
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Noise: <5µV
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“Crowbar” (Zero) Reference.
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