Product Description
The Wavetek 4808 is a high-precision multifunction calibrator designed specifically for calibrating 3½-digit to 8½-digit digital multimeters. It outputs standard signals for DC voltage, AC voltage, DC current, AC current, and resistance, covering the measurement ranges of general-purpose digital multimeters. Its core advantages lie in the use of substrate low-temperature control technology (with a temperature control accuracy of 0.001°C) and time-division linear segmentation technology, resulting in low noise, small hysteresis, and high stability in DC voltage output. The annual relative accuracy reaches 3.15ppm, making it one of the most accurate calibrators available. The device supports a GPIB interface (compatible with IEEE488.2 standard) and features a modular design without a cooling fan, making it suitable for laboratory and industrial environments.
Key Features
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Multi-Parameter Standard Signal Output: Supports standard signal output for DC voltage (0-200V), AC voltage (1mV-200V, 10Hz-1MHz), DC current (100μA-2A), AC current (100μA-2A), and resistance (10Ω-100MΩ), covering the measurement ranges of general-purpose digital multimeters.
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High Precision and Stability: Utilizes substrate low-temperature control technology (with a temperature control accuracy of 0.001°C) and time-division linear segmentation technology, resulting in low noise, small hysteresis, and high stability in DC voltage output, with an annual relative accuracy of 3.15ppm and excellent long-term stability.
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Extended Measurement Range Options: Supports extension of DC voltage to 1000V and DC/AC current to 11A, meeting high-voltage and large-current calibration requirements.
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Ratio Measurement Function: Integrates ratio measurement modes (A/B(%), (A-B)/B(%)) with automatic dual-channel input switching, suitable for high-precision ratio calculations.
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Modular Design and Standardized Interface: Features a GPIB interface compliant with IEEE488.2 standard, compatible with existing automated test systems, supporting front-panel operation and bus control for strong expandability.
