LANCOM Support Knowledgebase Dokument-Nr. 1602.1110.2512.RHOO - V1.90

LANCOM Wireless ePaper: How to stop the batteries in ePaper Displays from discharging too quickly



Information:

In some cases, using a calendar system such as IBM Notes, Microsoft Exchange, or Google Calendar has caused the batteries of the LANCOM Wireless ePaper Displays to discharge too quickly. The most common cause for this is that the content of the Displays is changed too often, i.e. updates to the Display content are carried out too frequently.

With an average number of 2 content changes per day, the battery life is 5 years.

To extend the life of the Display batteries, you should check the following:
  • If your LANCOM Wireless ePaper Displays are connected to a Microsoft Exchange system, make sure that the interval defined when the Exchange script is called (the parameter -i <interval> in exchange_display_updater.py) which sets the time between the individual checks is not set to a value that is too small.

    For more information see
    chapter 4 of the Exchange integration manual.
  • If your LANCOM Wireless ePaper Displays are connected to an IBM Notes system, the update interval of the agent that calls the function CheckForUpdate from the script library should not be set to a value that is too small.

    For more information see chapter 2 of the Notes integration manual.
  • If your LANCOM Wireless ePaper Displays are connected to a Google Calendar, make sure that the value for update.interval in the service.properties file is not set to a value that is too small.

    For more information see
    chapter 3.6 of the Google Calendar integration manual.


To check how often the contents of your displays change, you can view the label history on the Wireless ePaper Server. The server stores the history of the updates over a period of 3 months:
  • Enter the following URL in the browser:
    http://<server-ip>:8001/service/updateStatus/label/<label id>page=0&recordsPerPage=20?
    • The parameters "recordsPerPage" and "page" are optional, otherwise all updates will be output at once.
    • Also, the part "/ label / <label-id>" is optional, so that you can spend without all the history for all labels (optional page by page).

As output, you will receive an overview of the display updates carried out.
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