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CS5467
8.3.6 Line to Sample Frequency Ratio (Epsilon) – Address: 17
MSB
LSB
-(2 )
2
2
2
2
2
0
2
-1
2
-2
-3
-4
-5
-6
-7
.....
2 -17
2
-18
2
-19
2
-20
2
-21
2
-22
2 -23
Default = 0.0125 (4.0 kHz x 0.0125 or 50 Hz)
Epsilon is the ratio of the input line frequency to the output word rate (OWR). It can either be written by the ap-
plication program or calculated automatically from the line frequency (from the voltage input) using the AFC bit
in the Modes register. It 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.
8.3.7 Pulse Output Width (PulseWidth) – Address: 14
MSB
LSB
0
2 22
2 21
2 20
2 19
2 18
2 17
2 16
.....
2 6
2 5
2 4
2 3
2 2
2 1
2 0
Default = 1 (250 uS at OWR = 4 kHz)
PulseWidth sets the duration of energy pulses. The actual pulse duration is the contents of PulseWidth divided
by the output word rate (OWR). PulseWidth is an integer in the range of 1 to 8,388,607.
8.3.8 Pulse Output Rate (PulseRate) – Address: 15
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
Default= -1
PulseRate sets the full-scale frequency for E1, E2, E3 pulse outputs. For a 4 kHz sample rate, the maximum
pulse rate is 2 kHz. This is a two's complement value in the range of -1 ? value ? 1, with the binary point to the
left of the MSB.
Refer to 6.10 Energy Pulse Rate on page 21 for more information.
8.3.9 Cycle Count (N) – Address: 19
MSB
LSB
0
2 22
2 21
2 20
2 19
2 18
2 17
2 16
.....
2 6
2 5
2 4
2 3
2 2
2 1
2 0
Default = 4000
Determines the number of output word rate (OWR) samples to use in calculating low-rate results. Cycle Count
( N ) is an integer in the range of 10 to 8,388,607. Values less than 10 should not be used.
8.3.10 Wideband Reactive Power (Q1 WB , Q2 WB )
Address: 20 ( Q1 WB ), 21 ( Q2 WB )
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
Wideband reactive power is calculated using vector subtraction. (See Section 4.8 Power and Energy Results
on page 16). The value is signed, but has a range of 0 ? value ? 1.0. The binary point is to the right of the MSB.
36
DS714F3
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