I. Applications and Features:
DO30-DQ/DO30DQ ModelMulti-functional Calibration InstrumentIt is an intelligent AC and DC standard voltage and current calibrator (with AC output displaying true RMS value). The instrument features three display windows, capable of simultaneously displaying the actual output value, percentage, and the full-scale value of the tested meter. The output of the instrument can be set based on the full-scale value of the tested meter.RangeAnd the step value can be selected according to the scale of the inspected gauge. Output adjustment is selectable.Keyboard(Keypad) Control or Potentiometer Control. Features digital display, error direct reading,RangeWide range, fine gradation, high precision, good stability, and ease of use. Suitable for calibration, inspection, and maintenance of 4.5-digit multi-functional meters, various 0.2 and 0.5 class below pointer type AC and DC voltmeters and ammeters; also can be used as a high-stability test power supply, paired with high-grade standard meters to calibrate 0.1 class current and voltage meters.
II. Main Functions:
1. 5 1/2-digit LED digital display for output quantity, showing both actual value and percentage simultaneously.
2. UtilizeKeyboardRegulate the increase and decrease of output quantity.KeyboardControl levels are divided into 100%/N, 10%/N, 1%/N, 0.1%/N (N represents 4, 5, 6, 10, 15).
3、External Control RegulatorThe regulator allows for off-line control of output quantity adjustments.KeyboardTwo configurations available, switchable at any time.
4. DC and AC voltage output range: 0 to 1050V.
5. Output range for AC and DC current is 0 to 60A.
6. Offers four output frequencies: 50Hz, 60Hz (59.7Hz), 400Hz, and 1000Hz, suitable for useCrystal OscillatorEnsure accuracy and stability in frequency.
7. Overload protection with automatic shutdown and manual reset.
8. The 50Hz output can also be synchronized with the local power supply to minimize the impact of the frequency beat on the tested meter.
9. Clamp Meters Measurement: Equipped with our factory-standard coil, capable of measuring 0-1000A current with an accuracy of ±0.3%.
Appendix:
| Export Items | Output Range | Rated Output | Peak Output | Accuracy |
| AC/DC Voltage | 0～300mV | 20mA | 100mA | Basic Error: |
| 0～1V～3V | 50mA | 100mA | ||
| 0～5V～10V～30V | 100mA | 200mA | ||
| 0～50V～100V～300V | 50mA | 100mA | ||
| 0～250V～500V～1000V | DC:20mA AC:40mA | DC:20mA AC:60mA | ||
| AC/DC Current | 0～100mA | DC:3V AC:36V | ||
| 0～1A | DC:3V AC:12V | |||
| 0～50A | 1.5V | |||
| Standard Resistor | 10, 24, 50, 100, 240, 500 (Ω), 1, 2.4, 5, 10, 24 (kΩ), plus × 1K, × 1x range (10kΩ to 24MΩ) | 0.25W | ±(0.3%+20mΩ) | |
Note: (1) For working environment temperatures exceeding 23°C ±2°C, additional error is less than the basic error of the range for every 10°C change. (2) 50A 1KHz accuracy: ±(0.15% of reading value + 0.05% of full scale) | ||||
III. Technical Performance:
1. Stability: AC < fullRange0.02%/5 minutes, DC < fullRange0.01%/5 minutes, instruments require a two-hour warm-up for precise measurements.
2. Communication Distortion: <0.5%
3. Direct Current Ripple Factor: <0.05% (at rated output)
4. Output Frequency Accuracy: 50Hz, 60Hz (59.7Hz), 400Hz, <0.1% (or synchronized with commercial power)
5. Output voltage, current, andMedian ResistanceScope and accuracy are as shown in (Appendix 1) at 23℃±2℃, with output values greater than 10%.Range）
6. Power specifications: AC voltage 220V ±10%, frequency 50Hz ±1Hz
7. Working Environment: Temperature 5℃ to 35℃, relative humidity <80%
8. Business Hours: Continuous
9. Dimensions: 180×480×480mm³
10. Weight: Approximately 24 kg
