User guide

CS5480
62 DS980F3
6.6.77 Calibration Scale (Scale) – Page18, Address 63
Default = 0x4C CCCC (0.6)
The Scale register is used in the gain calibration to set the level of calibrated results of I-channel RMS. During
gain calibration, the Ix
RMS
results register is divided into the Scale register. The quotient is put into the Ix
GAIN
register. This is a two's complement value in the range of -1.0value1.0, with the binary point to the right of
the MSB. Negative values are not used.
6.6.78 V-channel Zero-crossing Threshold (VZX
LEVEL
) – Page 18, Address 58
Default = 0x10 0000 (0.125)
VZX
LEVEL
is the level that the peak instantaneous voltage must exceed for the zero-crossing detection to
function. This is a two's complement value in the range of -1.0
value<1.0, with the binary point to the right of
the MSB. Negative values are not used.
6.6.79 I-channel Zero-crossing Threshold (IZX
LEVEL
) – Page 18, Address 24
Default = 0x10 0000 (0.125)
IZX
LEVEL
is the level that the peak instantaneous current must exceed for the zero-crossing detection to func-
tion. This is a two's complement value in the range of -1.0
value<1.0, with the binary point to the right of the
MSB. Negative values are not used.
MSB LSB
-(2
0
)2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23
MSB LSB
-(2
0
)2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23
MSB LSB
-(2
0
)2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23