ES51964(6600counts)
Dual Display
2.4 Current measurement for clampmeter
ES51964 has 2 automatic and 4 manual current measurement modes for Clampmeter. The
following table summarizes the full-scale range of each mode. When ES51964 operate in
the automatic mode1&2, it takes high input from IVSH/IVSL (higher range/lower range),
low input from SGND with full scale 66mV and reference voltage from VR. When
ES51964 operates in the manual mode1~4, It takes high input from ADP, low input from
SGND with full scale 660mV and reference voltage from VA+ and VA-.
Mode
Automatic1
Automatic2
Manual1
Manual2
Manual3
Manual4
FC1~4
1,1,0,1
1,1,1,1
1,1,0,0
1,0,0,0
1,0,1,0
1,0,0,1
1VBAR
Full Scale
660.0A / 6600A
66.00A / 660.0A
6.600A
Input Terminal
0
0
X
X
X
X
IVSL/IVSH V.S. SGND (66mV)
IVSL/IVSH V.S. SGND (66mV)
ADP V.S. SGND (660mV)
ADP V.S. SGND (660mV)
ADP V.S. SGND (660mV)
ADP V.S. SGND (660mV)
66.00A
660.0A
6600A
Note:
1. Connect VBAR to V- will disable the “µ2” / ”m2” symbol on LCD panel..
2. In DC current modes for clampmeter, ES51964 provides Zero function for offset removing.
2.5 Low pass filter (LPF) mode for ACA/ACV mode
A 3rd order low-pass filter with is built in ES51964. The LPF mode is active
automatically when the input AC frequency of voltage or current is less than 500Hz. That
means if the frequency is lower, the LPF mode (3dB BW = 7.5kHz typ.) will be helpful to
filter-out the high frequency noise of the main signal. When LPFOFF (pin 114) is pulled to
V-, the LPF mode will be disabled always.
v2.5
10
09/04/14
CYRUSTEK [ Cyrustek corporation ]
