71M6511 Datasheet, PDF (73/95 Pages) Teridian Semiconductor Corporation – Single-Phase Energy Meter IC

71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
AUGUST 2007
Other CE Parameters
The table below shows CE parameters used for suppression of noise due to scaling and truncation effects as well as scaling
factors.
CE
Address
2F
22
Name
QUANTA
QUANTB
34
QUANT_VARA
24
QUANT_VARB
35
QUANT_IA
23
QUANT_IB
3B
KVAR
Default
0
0
0
0
0
0
6448
12880
Description
These parameters are added to the Watt calculation to compensate for input
noise and truncation.
LSB=(VMAX*IMAX / IA_8) *7.4162*10^-10 W for phase A, and
LSB=(VMAX*IMAX / IB_8) *7.4162*10^-10 W for phase B
These parameters are added to the VAR calculation to compensate for input
noise and truncation.
LSB = (VMAX*IMAX / IA_8) * 7.4162*10^-10 W for phase A, and
LSB = (VMAX*IMAX / IB_8) * 7.4162*10^-10 W for phase B
These parameters are added to compensate for input noise and truncation in
the squaring calculations for I² and V².
LSB=VMAX²*7.4162*10^-10 V²,
LSB= (IMAX²/IA_8²)*7.4162*10^-10 A² for phase A and
LSB= (IMAX²/IB_8²)*7.4162*10^-10 A² for phase B.
Scale factor for the VAR calculation. The default value of KVAR should never
need to be changed.
for MUX_DIV = 1
for MUX_DIV = 2
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