DO30DQ/DO30-3 multifunctional calibrator

The DO30DQ multifunctional calibrator is an intelligent AC and DC standard voltage and current standard source. (The communication output is displayed as true significant value). Three windows simultaneously display the output actual value, percentage, and checked table full value. It is possible to set the full-scale value of the inspected table and select the corresponding step size based on the scale of the inspected table. There are two options for amplitude adjustment: keyboard (key) or potentiometer. It has the characteristics of digital display, error direct reading, wide range, fine grading, high accuracy, good stability, and easy use. Suitable for the calibration, verification, and repair of digital multimeters, voltmeters, and ammeters with four and a half digits or less, as well as various pointer type multimeters, AC and DC voltmeters, and ammeters below level 0.2; It can also be used as a high stability testing power supply, in conjunction with high-level standard meters, to calibrate 0.1 level ammeters and voltmeters.

2. Main functions

2.2 Use keyboard to control the increase or decrease of output volume. The keyboard control quantity is divided into 100%/N, 10%/N, 1%/N, and 0.1%/N (N is 4, 5, 6, 10, 15).

2.4 The output range of AC and DC voltage is 0-1100V.

2.6 There are four AC frequencies available for selection: mains synchronous, 50Hz, 60Hz, 400Hz, and 1kHz (with stable crystal oscillation frequency).

2.8 AC 50Hz output can be synchronized with mains power to reduce the impact of the frequency of the tested meter.

3. Technical performance

As shown in Table 1

3.3 Communication distortion:<0.5%
3.5 Output frequency and error range: synchronous, 50Hz, 60Hz, 400Hz, 1000Hz<1% (or mains synchronous)
3.7 Working environment: The temperature of the working environment is between 5 ℃ and 35 ℃, and the relative humidity is less than 80%
3.9 Dimensions: Width x Height x Depth: 480 x 200 x 500 (mm)