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DN-2400E User Guide - 08/05/11
1.2 Point-to-Multipoint Network
A DN-2400E/EP point-to-multipoint point network consists of one DN-2400E/EP configured as the Base
and up to 16 DN-2400E/EPs configured as Remotes. See Figure 1.2.1. In a point-to-multipoint network,
the base should be connected to the main Ethernet network segment since all remote transmissions are
sent to the base.
Figure 1.2.1
DN-2400E/EP networks function as a MAC layer bridges, with no IP address filtering. Any Ethernet
packet received by a DN-2400E/EP will be transmitted over the air. If the DN-2400E/EP is used on an
Ethernet network that includes information that should not be transmitted by a DN-2400E/EP, it should be
placed behind an Ethernet switch that can perform the required filtering.
2.0 Operation
Data signals to and from the DNT2400 radio within a DN-2400E/EP are routed through a signal switch. In
normal operation, the switch routes these signal to/from the Ethernet MAC/PHY microcontroller, providing
transparent 10 BaseT Ethernet packet transmission and reception.
Grounding the CONFIG pin changes the DNT2400 data signal routing to the data input (DI) and data out-
put (DO) terminals, allowing radio configuration parameters to be adjusted to specific application require-
ments, as discussed in Section 5. The switching regulator used in the DN-2400E/EP supports a wide in-
put voltage range, from 9 to 48 Vdc.
