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AVR465 Datasheet(PDF) 30 Page - ATMEL Corporation

Part # AVR465
Description  Single-Phase Power/Energy Meter with Tamper Detection
PDF  40 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AVR465 Datasheet(HTML) 30 Page - ATMEL Corporation

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30
AVR465
2566A-AVR-07/04
Figure 18.
Calculation Cycle Service.
CYCLE SERVICE
RMS Current
Below Threshold?
Clear Active Power
YES
NO
Clear CYCLE_FULL Flag
Sum = Accumulator
Accumulator = 0
Make a copy of accumulated data,
then clear accumulator to make
way for new data.
Adjust Gain &
Clear Gain Control Flags
Increase or decrease gain of current
channels, according to control flags.
Then reset flags.
Normalise &
Add/Subtract Offset
Normalise data, then add a constant
offset to it. Subtract, if accumulated
data is negative.
Calculate & Calibrate
Take square root of current and voltage
data, then multiply accumulated data
with calibration coefficients.
CSS
(Continued on next page)
Calculation Cycle Service



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