User's Manual

3.5.6.1 Redundant rectifier modules (Power Supply Module, PSM)
The voltage supply continues to be ensured through redundant rectifier modules (Power
Supply Module, PSM) and ensures the operation of DIB-R5 if one PSM should fail. The
active and the redundant PSMs are all in operation in this case and divide the load
among them. In case of a failure, the load on the remaining PSMs is increased accord-
ingly.
In the combination with redundancy option "Redundant voltage supply feeds", two PSMs
each are supplied by one voltage supply feed.
3.5.6.2 Redundant voltage supply feeds
The voltage supply continues to be ensured on site by the redundant voltage supply
feeds and secures the operation of DIB-R5 even if a feed should fail or fall below the
required voltage range. This is particularly meaningful in difficult environments in which,
for example, the infrastructure on site is unreliable. With this redundancy option, one
Power Distribution Module (PDM), two in case of redundancy, is always supplied by a
voltage supply feed.
If this redundancy option is selected, a second voltage supply feed must be taken into
account in the location planning.
3.5.7
Redundant connection to the transport network
With the redundant connection to the transport network, the connection to all network
components continues to be ensured in case of a failure of the IT infrastructure (e.g.
router).
3.5.8
Redundant synchronization (GNSS, PTP)
The clock and time signals required for the synchronization of base stations are being
obtained in parallel via a connected GNSS antenna and as an alternative via the Preci-
sion Time Protocol (PTP). If the satellite signal should no longer be available due to
external influences, a switch is automatically made to the network time.
Product description
Redundancy options> Redundant synchronization (GNSS, PTP)
DIB-R5 advanced
63Operation Manual 90DIBR5advancedOM02 - 1.0