ES51969
6,600 Counts Auto DMM
1.5 Capacitance Measurement
The following table summarizes the eight ranges of capacitance measurement mode.
Measurement Period
0.33 sec
Configuration Full Scale Range Relative Resistor
C1
C2
C3
C4
C5
C6
C7
C8
6.600nF
66.00nF
660.0nF
6.600uF
66.00uF
660.0uF
6.600mF
66.00mF
VR1
VR2
VR3
0.33 sec
0.33 sec
0.33 sec
0.66 sec
1.32 sec
1.32 sec
6.60 sec
VR4
R9K / R1K
R9K / R1K
R9K / R1K
R9K / R1K
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”.
v2.6
11
08/10/06
CYRUSTEK [ Cyrustek corporation ]
