Symptom: M Operator Error

Symptom: M Operator Error

  1. Shows “M Operator Error” on the screen 
  1. This is typically shown when the modem cannot connect to the network. This can mean that there is either no signal or that the data has been depleted. 
  1. Check the antenna 
  1. Check the signal strength on the far right-hand side of the screen. It will display a number between 8 and 30. Above 15 is preferable for reliability. Below 12 the meter could start losing network connectivity periodically. Below 8 the meter will no longer be able to connect to the network. 
  1. Note, a signal of above 33 could indicate connection issue, and that the system does not know what the signal actually is. This sometimes presents as a signal of 99.
  1. Ensure the antenna connector on the board is not loose/broken.The antenna connector plate is perpendicular to the top PC board. This means that if it is handled without care, the soldered connection could break. 
  1. If it is, the meter requires replacement.
  2. Ensure the antenna cable connector is screwed in tight.
  3. Ensure the antenna cable is uncoiled, and extended all the way.
  4. Ensure the antenna is positioned outside of the DB board, in the best possible position for the best signal.
  1. Investigate alternative network providers (sim card) options. 
  1. We have standardised on Vodacom sim cards in the majority of our devices. In some areas, however, MTN has better signal. We can provide the customer with a replacement MTN sim card.
  1. If the previous steps did not resolve the issue, there are 2 options, depending on the number of meters in the immediate area. 
  1. Install a high-range antenna on the specific meter.
  2. Install a signal booster in the general area to boost the signal to all meters.


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