2022_05 SAM_EN | 01 19
System overview of electricity meter
The meter is an approved meter under calibration law and is used to measure the amount of energy delivered
to the delivery point.
The following picture shows the meter with its functional components.
Figure 9: EasyMeter meter (example)
LC display
The display is a non-backlit liquid crystal display (LCD).
Optical button (not used by the SAM module)
The "optical keystroke" requires an optical energy equivalent of 400 LUX (e.g. torch) and is used to display
additional information of the meter.
Data interfaces (MSB and INFO-DSS)
The potential-free data interface of the meter is a bidirectional, optical (infrared) communication interface for
communication with the SAM module.
Info interface (not used by the SAM module, interface only for AC)
The meter has a potential-free optical data interface (INFO-DSS). The info interface is a unidirectional, infrared
communication interface.
Telemetry interface (not used by the SAM module)
The telemetry interface is an infrared optical test output according to EN50470-1 (pulse output).
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