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參數資料
型號： 71M6543GH-IGTR/F
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號調理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP100
封裝： LEAD FREE, LQFP-100
文件頁數： 36/157頁
文件大小： 2178K
代理商： 71M6543GH-IGTR/F
71M6543F/H and 71M6543G/GH Data Sheet
130
2008–2011 Teridian Semiconductor Corporation
v1.2
5.4.10 CE Calibration Parameters
Table 87 lists the parameters that are typically entered to effect calibration of meter accuracy.
Table 87: CE Calibration Parameters
CE
Address
Name
Defau
lt
Description
0x10
CAL_IA
16384
These constants control the gain of their respective channels. The
nominal value for each parameter is 2
14 = 16384. The gain of each
channel is directly proportional to its CAL parameter. Thus, if the
gain of a channel is 1% low, CAL should be increased by 1%.
0x11
CAL_VA
16384
0x13
CAL_IB
16384
0x14
CAL_VB
16384
0x16
CAL_IC
16384
0x17
CAL_VC
16384
0x19
CAL_ID
16384
0x12
PHADJ_A
0
These constants control the CT phase compensation. No
compensation occurs when PHADJ_X = 0. As PHADJ_X is increased,
more compensation (lag) is introduced. The range is
± 215 – 1. If it
is desired to delay the current by the angle
Φ, the equations are:
Φ
Φ
=
TAN
X
PHADJ
0168
.
0
1714
.
0
029615
.
0
2
_
20
at 60Hz
Φ
Φ
=
TAN
X
PHADJ
01226
.
0
1430
.
0
0206
.
0
2
_
20
at 50Hz
0x15
PHADJ_B
0
0x18
PHADJ_C
0
0x12
DLYADJ_A
0
The shunt delay compensation is obtained using the equation
provided below:
(
)
+
+
+
=
s
rees
f
c
b
f
ab
f
a
X
DLYADJ
π
2
sin
2
cos
2
cos
360
2
1
.
0
1
_
2
14
deg
where:
A
a
2
=
1
2
+
= A
b
=22+42+2
f is the mains frequency
fs is the sampling frequency
The table below provides the value of A for each channel:
Channel
Value of A
(decimal)
D
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