ES218 Datasheet, PDF (9/26 Pages) Cyrustek corporation – 2000 Counts Manual DMM

1.4. Resistance Measurement
ES218
2000 Counts Manual DMM
A re-configurable divider provides a manual Full-Scale range in resistance measurement mode.
The following table summarizes the full-scale ranges and the reference resistors in each
configuration.
Configuration
OR1
OR2
OR3
OR4
OR5
OR6
OR7
Full Scale Range
200.0Ω
2.000KΩ
20.00KΩ
200.0KΩ
2.000MΩ
20.00MΩ
200.0MΩ
Relative Resistor
OR1
VR5
VR4 || VR1
VR3 || VR1
VR2 || VR1
VR1
VR1
Equivalent value
100Ω
1KΩ
10KΩ
100KΩ
1MΩ
10MΩ
100MΩ
1.5. Capacitance Measurement
The following table summarizes the eight ranges of capacitance measurement mode.
Configuration¹ Full Scale Range Relative Resistor Measurement Period
C1³
2.000nF
Ratio to C2
0.25 sec
C2²
20.00nF
CAL
0.25 sec
C3
200.0nF
Ratio to C2
0.9 sec
C4
2.000uF
Ratio to C2
0.9 sec
C5
20.00uF
Internal matching
0.25 sec
C6
200.0uF
Internal matching
1.25 sec(max)
C7
2.000mF
Internal matching
2.5 sec(max)
C8
20.00mF
Internal matching
12.5 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.
V 1.5
9
2015/12/11