Meinberg IMS-GNS181, Руководство по установке

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4 GNSS Receiver
4.1.1.2 MRS Settings
The MRS stands for a Multi Reference Source clock. This is a special functionality of a receiver that can in
addition to GNSS use also other input signals as a reference for synchronization.
4.1.1.3 MRS Source Priority
In the MRS Settings you can configure a priority list of input signals how the switching will follow in case that
a master reference becomes unavailable . The selection of signals in the list is automatically generated by the
LANTIME according to the hardware configuration. The priority list of input signals should be configured in a
descending order referring to the accuracy of signals.
Here is an example how to configure a priority list in a descending order:
1. Source: GNSS / GPS
2. PPS + String
3. PTP – IEEE1588
4. external NTP Server
Figure: Configuration example of reference signals in a descending order.
IMS-GNS181 Setup Guide Date: 20th March 2020 11