Maintenance
M7/M7L/M7LT Modular Satellite Modem
2-14
M7/M7L/M7LT - Rev. 0.05
2.3.8.3.
Express Ethernet Interface (E7)
The E7 Express Ethernet Interface connectors are on the rear panel (Figure 2-9) of the optional
interface card.
Figure 2-9 - Express Ethernet Interface (E7)
Figure 2-10 - Typical SFP Interface Adapters (Optical and GbE shown)
2.3.8.3.1.
GbE Ports 1 thru 4 (J29 - J32)
With the E7 Interface installed, the M7 is able to interface with four (4) Gigabit Ethernet ports via J29
through J32. The connector pinout for each connector is shown in Table 2-13.
Table 2-13 - E7 GigBit Ethernet Interface Ports 1-4 Connector Pinout (J29-J32)
Pin
Name
Description
1
TX D1+
Transmit Data+
2
TX D1-
Transmit Data-
3
RX D2+
Receive Data+
4
BI D3+
Bi-directional pair C +
5
BI D3-
Bi-directional pair C -
6
RX D2-
Receive Data-
7
BI D4+
Bi-directional pair D +
8
BI D4-
Bi-directional pair D -
2.3.8.3.2.
SFP Interface (J28)
The optional SFP port provides an additional interface port that can be configured with an interface
available with a SFP adapter. The connector is compatible with the SFP standard.
2.3.8.3.3.
Reference I/O (J27)
The Reference I/O connector is located on a 75
female BNC J27. This connector is used to provide
distributed bit timing reference over a satellite link. Typical use is for distribution of the master G703
timing within a cellular network.