ES238 Datasheet, PDF (12/37 Pages) Cyrustek corporation – 6000 Counts DMM / Peak

ES238
6000 Counts DMM / Peak
1.8. Capacitance Measurement
The following table summarizes the eight ranges of capacitance measurement mode.
Configuration¹ Full Scale Range Relative Resistor Measurement Period
C1³
6.000nF
Ratio to C2
0.36 sec
C2²
60.00nF
CAL
0.36 sec
C3
600.0nF
Ratio to C2
1.15 sec
C4
6.000uF
Ratio to C2
1.15 sec
C5
60.00uF
R10K
0.33 sec
C6
600.0uF
R10K
3.3 sec(max)
C7
6.000mF
R1K
1.32 sec(max)
C8
60.00mF
R1K
13.2 sec(max)
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 main-display shows
dIS.C. Discharging through the chip is quite slow. We recommend users to discharge the capacitor with some
other apparatus.
2. The C2 range is calibrated in calibration scheme.
3. The C1 range residual offset could be compensated by the small capacitors near to OVH pin.
1.9. Continuity Check
Continuity check shares the same configuration with 600.0Ω manual resistance measurement
mode and has buzzer output to indicate continuity. The buzzer generates 2KHz beep and ALARM1
(pin 56) drive high output (V+ level) whenever the reading is less than 30Ω. The ES238 built in a
high speed short detection circuit and the detection could be less than 10ms.
V 2.2
12
2015/12/15