71M6541D Datasheet, PDF (134/166 Pages) Maxim Integrated Products – 0.1% Accuracy Over 2000:1 Current Range Energy Meter ICs

71M6541D/F/G and 71M6542F/G Data Sheet
5.3.10 Other CE Parameters
Table 91 shows the CE parameters used for suppression of noise due to scaling and truncation effects.
Table 91: CE Parameters for Noise Suppression and Code Version
CE
Address
Name
Default Description
0x25
QUANT_VA
0
0x26
0x27
QUANT_IA
QUANT_A
0
Compensation factors for truncation and noise in voltage, current,
0
real energy and reactive energy for phase A.
0x28 QUANT_VARA
0
0x29 ^†
QUANT_VB
0
0x2A
QUANT_IB
0
Compensation factors for truncation and noise in voltage, current,
real energy and reactive energy for phase B.
0x2B
QUANT_B
0
† _{71M6542 only.}
0x2C QUANT_VARB
0
0x38
0x39
0x3A
0x43453431
0x6130316B
0x00000000
CE file name identifier in ASCII format (CE41a01f). These values
are overwritten as soon as the CE starts
LSB weights for use with Local Sensors:
QUANT _ Ix _ LSB = 5.08656 ⋅10^−13 ⋅ IMAX ² ( Amps² )
QUANT _Wx _ LSB = 1.04173⋅10^−9 ⋅VMAX ⋅ IMAX (Watts)
QUANT _VARx _ LSB = 1.04173⋅10^−9 ⋅VMAX ⋅ IMAX (Vars)
LSB weights for use with the 71M6x01 isolated sensors:
QUANT _ Ix _ LSB = 1.38392 ⋅10^−12 ⋅ IMAX ²( Amps²)
QUANT _Wx _ LSB = 1.71829 ⋅10^−9 ⋅VMAX ⋅ IMAX (Watts)
QUANT _VARx _ LSB = 1.71829 ⋅10^−9 ⋅VMAX ⋅ IMAX (Vars)