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ES51918 Arkusz danych(PDF) 11 Page - Cyrustek corporation |
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ES51918 Arkusz danych(HTML) 11 Page - Cyrustek corporation |
11 / 32 page v1.08 06/04/03 11 ES51918 11,000 Counts Auto DMM 1.2 Resistance Measurement A re-configurable divider automatically provides a suitable full-scale range in resistance measurement mode. The following table summarizes the full-scale ranges and the reference resistors in each configuration. In 110.0MΩ, the maximum counting number is 1100 counts and the resolution is 0.1MΩ. So the full scale becomes 110.0MΩ. Configuration Full Scale Range Divider Ratio Resister Connection OR1 110.00Ω R6 100Ω OR2 1.1000KΩ R5 1KΩ OR3 11.000KΩ R4 10KΩ OR4 110.00KΩ R1‖ R3 100KΩ OR5 1.1000MΩ R1‖ R2 1MΩ OR6 11.000MΩ R1 10MΩ OR7 110.0MΩ R1 10MΩ 1.3 Current measurement ES51918 has 2 automatic and 1 manual current measurement modes for multimeter and 5 manual current measurement modes for clampmeter. The following table summarizes the full-scale range of each mode. When ES51918 operate in the current measurement modes for multimeter, It takes high input from pin IVSH or IVSL, low input from pin SGND and reference voltage from pin VR. When ES51918 operate in the current measurement modes for Clampmeter, It takes high input from pin ADP, low input from pin SGND and reference voltage from pins VA+ and VA-. The test circuits are shown in page 31. Mode Range Selection Full Scale Designed for Automatic Mode 1 µA110.00µA / 1100.0µA Multimeter Automatic Mode 2 mA 11.000mA / 110.00mA Multimeter Manual Mode 1 A 11.000A Multimeter Manual Mode 2 A 1.1000A Clampmeter Manual Mode 3 A 11.000A Clampmeter Manual Mode 4 A 110.00A Clampmeter Manual Mode 5 A 1100.0A Clampmeter Manual Mode 6 A 11000A Clampmeter Note: 1. In Manual DC current measurement modes for clampmeter, ES51918 provides Zero function for offset removing. 2. In Automatic mode1 and Automatic mode2, the pin VBAR is used to control the display of “µ” and “m” sign on the LCD panel. If pin VBAR is floating or connected to DGND, the “µ” and “m” sign will be displayed. If pin VBAR is connected to V-, the “µ” and “m” sign will not be displayed. |
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