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ES51969 데이터시트(PDF) 11 Page - Cyrustek corporation |
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ES51969 데이터시트(HTML) 11 Page - Cyrustek corporation |
11 / 32 page v2.6 11 08/10/06 ES51969 6,600 Counts Auto DMM 1.5 Capacitance Measurement The following table summarizes the eight ranges of capacitance measurement mode. Configuration Full Scale Range Relative Resistor Measurement Period C1 6.600nF VR1 0.33 sec C2 66.00nF VR2 0.33 sec C3 660.0nF VR3 0.33 sec C4 6.600uF VR4 0.33 sec C5 66.00uF R9K / R1K 0.66 sec C6 660.0uF R9K / R1K 1.32 sec C7 6.600mF R9K / R1K 1.32 sec C8 66.00mF R9K / R1K 6.60 sec Note: 1. In order to obtain an accurate reading, a capacitor must be discharged before measurement begins. The chip has a built-in discharge mode to automatically discharge the capacitor. In discharge mode, the LCD displays dIS.C 2. Discharging through the chip is quite slow. We recommend users to discharge the capacitor with some other apparatus. 3. In capacitance mode for clamp-meter (FC1~4={0,1,1,0}, SLACDC=1), the C1~C3 ranges will not occur whatever in the automatic or manual operation. When R_OVH (pin74) is pulled to V- in this mode, the charging current for 660uF-6.6mF is reduced. The 66.00mF range will be omitted. OVH path resistance is allowed to be increased. (For better high voltage protection) . 1.6 Continuity Check Continuity check shares the same configuration with 660.0Ω manual resistance measurement mode and has buzzer output to indicate continuity. The buzzer generates 2KHz beep whenever the reading is less than 30Ω. When R_OVH (pin74) is pulled to V- in this mode, the buzzer generates 2kHz beep when ever the reading is less than 50Ω. 1.7 Diode Measurement Diode measurement mode shares the same configuration with 6.600V manual voltage measurement mode and has buzzer output to indicate continuity. The buzzer generates a 2KHz sound whenever the reading is less than 30mV. If the test circuit is open or the voltage drop between the two ports of the device(diode) under test is larger than 2V, the LCD panel will show “OL”. |
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