Input from FREQ
Duty cycle=50%
Sensitivity in Frequency mode
600
mV(Vpp)
100KΩ
Between
resister
VRH
Reference voltage temperature
coefficient
—
—
ppm/℃
TCRF
50
0℃<TA<70℃
1.5
15
1.0
10
1.0
5
%
Digits
%
Digits
%
Digits
%
Digits
11nF
110nF/1.1µF
11µF/110µF/1.1mF
11mF/110mF
Capacitance measurement accuracy2
1.5
5
Note:
1.Full Scale
2.Above specification from 11nF to 1.1uF ranges are specified under REL mode.
Function Description
1. Operating Modes
1.1 Voltage Measurement
A re-configurable voltage divider automatically provides a suitable range in voltage
measurement mode. The following table summarizes the full-scale ranges in each
configuration.
Configuration
VR1
Full Scale Range
110.00mV
1.1000V
Divider Ratio
1
Resister Connection
R1
VR2
VR3
VR4
VR5
1/10
1/100
1/1000
1/10000
R2 / (R1+R2)
R3 / (R1+R3)
R4 / (R1+R4)
R5 / (R1+R5)
11.000V
110.00V
1100.0V
Note: 110.00mV range only exists in manual mode.
1.1.2 CE selection
ES51911 has a CE selection feature archived by configuring an CESEL pin. If pin
CESEL is connected to DGND or floating, ES51911 will have a 610.0V overflow level
in DC and AC 1100.0V ranges. If pin CESEL is connected to V-, ES51911 will have a
1010.0V overflow level in DC and AC 1100.0V ranges. The meter will Show OL when
the measuring signal reaches the overflow level. The configuration of CESEL is listed
below.
CESEL
V-
DGND or floating
DCV
1010.0V
610.0V
ACV
1010.0V
610.0V
v1.2
6
11/09/06