Display shows "ERR CH"
7922 and 7932 use an EEPROM to save the programming and counter values. This is done by monitoring the internal power supply of the meter. If the external supply voltage is switched off, the EEPROM is correspondingly...
7922 and 7932 use an EEPROM to save the programming and counter values. This is done by monitoring the internal power supply of the meter. If the external supply voltage is switched off, the EEPROM is correspondingly...