Specifications
- Function
- DC voltage
- Measuring ranges
- 0.2 / 2 / 20 / 200 / 1000 V
- Accuracy
- ±(0.02% of reading + 0.01% of full scale)
- Input impedance
- 1000 MΩ (0.2 and 2 V), 10 MΩ (higher ranges)
- Display
- 4½ digits, LED
- Outputs / interface
- BCD 1-2-4-8, TTL levels (printer)
- Construction
- integrated circuits
- Power supply
- 220 V ±10%
- Power consumption
- 55 VA
- Dimensions
- 15 × 30 × 37 cm (H × W × D)
- Weight
- 7 kg
Description
The E0303 is a digital voltmeter, made by IEMI in Bucharest and designed at the ICE research institute [1].
ICE’s laboratory for electronic instruments for measuring electrical quantities designed all the institute’s generations of oscilloscopes, voltmeters, multimeters, signal generators, frequency meters, logic analysers, RLC bridges and stabilised AC power supplies; they went into production at IEMI or in ICE’s own microproduction workshop, and equipped industrial laboratories and production lines as well as teaching and research laboratories [1]. In the 1970s and 1980s about half of the components of measuring instruments were imported; after 1980 about three quarters were Romanian [1].
It measures DC voltage [2]. IEMI’s production table lists 2,441 units made in 1971–1985 [2].
Its list price, set in 1982, was 21,000 lei [3].
Annex III.2.8 says it was built with integrated circuits and silicon semiconductor devices and measured DC voltages up to 1000 V with a resolution of up to 10 µV; its binary-coded decimal outputs (1-2-4-8 code, TTL levels) could drive a printer [4].
Gallery
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Schematics
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Documents
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References
- [1]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, section II.4.1 „Laborator aparate electronice pentru măsurarea mărimilor electrice”, pp. 109–115
- [2]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, sections III.2 „Producția IEMI” and III.3 „Comentarii tehnico-economice”, pp. 302–317, and annex III.2.3 „Producția IEMI – aparate electronice de măsură și industriale”, pp. 383–386
- [3]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.5 „Lista cu prețurile produselor – IEMI”, pp. 393–396
- [4]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.8 „Voltmetre – multimetre – wattmetre”, pp. 618–627