2n Helios IP Configuration Manual v2.8 Manuel d'utilisateur télécharger pdf (Page 96)

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5.5.2 Date and Time

If you control validity of phone numbers, lock activation codes and similar by time

profiles, make sure that the intercom internal date and time are set correctly.

Most models are equipped with a back-up real-time clock to withstand2N Helios IP

up to several days' long power outages. If not equipped with this function, the intercom

loses the real time data upon power outage (or restart). Therefore, if the intercom is

powered up after a rather long period of time (after new intercom installation, e.g.),

time is set to the default value and has to be reset. You can synchronise the intercom

time with your PC anytime by pressing the button.Synchronise

Synchronise the intercom internal time with any available SNTP server if your intercom

is not equipped with a real-time clock.

Practically, the intercom real-time circuit accuracy is approximately ±0,005 %, which

may mean a deviation of 2 minutes per month. Therefore, we recommend you to±

synchronise time with the NTP server to achieve the highest accuracy and reliability.

The intercom sends a query to the NTP server periodically to update its time value.

List of Parameters

Note

The intercom does not need the basiccurrent date and time values for its

function. However, be sure to set these values when you apply time

profiles and display time of listed events (Syslog, used cards, logs

downloaded by HTTP API, etc.).2N Helios IP

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2n Helios IP Configuration Manual v2.8 Manuel d'utilisateur Page 96