Ver 1.2
12
22/02/24
ES269
6000 Counts Intelligent Auto-Function DMM IC
Capacitance Measurement
In scan mode, it automatically switches to capacitance measurement as capacitance exceeds 200pF. It
can be manually switched to capacitance measurement by SELKey to measure larger or smaller
capacitance. The 60.00mF range supports only non-scan mode.
In EF unit, the OPO_Y is high if the capacitor is charging. The OPO_G is high after capacitor is
charged.
The following table summarizes the eight ranges of capacitance measurement mode:
Table 10. Capacitance ranges
Configuration
Full Scale Range Relative component
Measurement period
C1
6.000nF
Ratio to C2
0.363s
C2
60.00nF
Ratio to CAL
0.363s
C3
600.0nF
Ratio to C2
0.753s
C4
6.000uF
R9K / R1K
0.26s
C5
60.00uF
R9K / R1K
1.3s
C6
600.0uF
R9K / R1K
2.6s (max)
C7
6.000mF
5
R9K / R1K
2.6s (max)
C8
60.00mF
R9K / R1K
13s (max)
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” Discharging through the chip is quite slow. We recommend users to discharge the
capacitor with some other apparatus.
5
The C7-C8 both range is not available for auto scan mode
