71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 96
71m6543h-igtr/f
Manufacturer Part Number
71m6543h-igtr/f
Description
Energy Meter Ic
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.71M6543H-IGTRF.pdf
(157 pages)
- Current page: 96 of 157
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71M6543F/H Data Sheet
4.15 Meter Calibration
Once the Teridian 71M6543F/H energy meter device has been installed in a meter system, it must be
calibrated. A complete calibration includes the following:
•
•
•
The metrology section can be calibrated using the gain and phase adjustment factors accessible to the
CE. The gain adjustment is used to compensate for tolerances of components used for signal conditioning,
especially the resistive components. Phase adjustment is provided to compensate for phase shifts introduced
by the current sensors or by the effects of reactive power supplies.
Due to the flexibility of the MPU firmware, any calibration method, such as calibration based on energy, or
current and voltage can be implemented. It is also possible to implement segment-wise calibration
(depending on current range).
The 71M6543F/H supports common industry standard calibration techniques, such as single-point
(energy-only), multi-point (energy, Vrms, Irms), and auto-calibration.
Teridian provides a calibration spreadsheet file to facilitate the calibration process. Contact your Teridian
representative to obtain a copy of the latest calibration spreadsheet file for the 71M6543F/H.
96
Establishment of the reference temperature for factory calibration (e.g., typically 22 °C).
Calibration of the metrology section, i.e., calibration for errors of the current sensors, voltage
dividers and signal conditioning components as well as of the internal reference voltage (VREF) at
the reference temperature (e.g., typically 22 °C).
Calibration of the oscillator frequency using the RTCA_ADJ register (I/O RAM 0x2504).
© 2008–2011 Teridian Semiconductor Corporation
v1.0
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