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E063-018
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The JAPAN SANWA DIGITAL MULTI ER (Model CD-800a) is a high-quality, portable digital multimeter designed for the measurement of low-voltage circuits in small communications equipment, home appliances, and various batteries. It is known for its durability and comprehensive feature set, including the continuity buzzer you mentioned.
It is part of a series (CD800a, CD800a2, CD800a3) that offers similar core functions with slight differences in display count, safety rating, and features like backlight/EF detection. The original CD-800a is a standard-setting model.
Here is a detailed description of its key features and specifications:
Digital Display: Features a 4000-count numeral display with a sharp contrast LCD (17.5mm character height) for clear readings.
Best Accuracy: mathbf0.7% for DC Voltage (DCV).
Auto-Ranging: Automatically selects the appropriate measurement range, though a Range Hold (manual ranging) function is also available.
Solid & Protective Body: Comes with a durable body cover that can also be folded and used as a tilt stand to position the meter upright. It includes a convenient chip resistor holder behind the cover.
Buzzer/Continuity Check: Includes a continuity with a buzzer that sounds when resistance is between 10Omega and 120Omega (typical range for electrical continuity).
Low Power Ohm: Performs resistance measurement with a low applied voltage (approx. 0.4V) at the continuity range, which is useful for ing circuits without forward-biasing semiconductors.
Special Functions:
Data Hold (DH): Freezes the displayed reading.
Relative Value (DeltaREL): Sets the current reading as zero reference for comparative measurements.
Auto Power Off (APO): Automatically turns off after 30 minutes of inactivity (cancelable).
Safety Standard: Conforms to IEC61010-1 CAT. III 600V Max. (for the CD800a model).
| Function | Measuring Range | Best Accuracy | Resolution |
| DC Voltage (DCV) | 400m / 4 / 40 / 400 / 600V | pm(0.7%+3) | 0.1mV |
| AC Voltage (ACV) | 4 / 40 / 400 / 600V | pm(1.6%+5) | 0.001V |
| DC Current (DCA) | 40m / 400mA | pm(2.2%+5) | 0.01mA |
| AC Current (ACA) | 40m / 400mA | pm(2.8%+5) | 0.01mA |
| Resistance (Omega) | 400 / 4k / 40k / 400k / 4M / 40MOmega | pm(1.2%+5) | 0.1Omega |
| Capacitance (C) | 50n / 500n / 5mu / 50mu / 100muF | pm(5.0%+10) | 0.01nF |
| Frequency (Hz) | 5Hz sim 100kHz | pm(0.5%+3) | - |
| Duty Cycle (% ) | 20% sim 80% | pm(0.5%+5) | - |
| Diode | Open Voltage: approx. 1.5V | - | - |
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