MDS 05-6628A01, Rev. B
MDS Orbit MCR-4G Technical Manual
5
PWR
—Two-conductor DC input connection. Input voltage must be well filtered, and within the range of
10-60 Vdc. The power supply must be capable of providing a maximum of 15 watts. The unit includes a
6-foot (1.83 meter) power cable suitable for indoor or outdoor use when properly connected. The DC power
connector (
Figure 4
) is keyed, and can only be inserted one way.
Invisible place holder
Figure 4. DC Power Connector (P/N 73-1194A39)
NOTE:
The unit is designed for use in negative ground systems only.
ETH1 / ETH2
— Ethernet connection port. These ports support both device management and payload data
transport. Depending on product version, the unit may have one or two Ethernet ports. This is a standard
RJ-45 jack, and features MDIX auto-sensing capability, allowing straight-through or crossover cables to be
used.
Connecting to the unit via SSH supports device management and provides the same user interface available
using the unit’s
COM1
serial
port. Various options are available for passing Ethernet data, allowing system
administrators to optimize the configuration for maximum efficiency, based on the system’s operating char-
acteristics.
(As viewed from the outside of the unit)
USB Port
—This port allows for connection of a laptop or PC. The port provides a local console for man-
agement of the device. A standard host-to-mini device USB 2.0 cable may be used.
Table 1. ETH1/2 Pin Details
Pin
Function
1
Transmit Data (TX) High
2
Transmit Data (TX) Low
3
Receive Data (RX) High
4
Unused
5
Unused
6
Receive Data (RX) Low
7
Unused
8
Unused
Lead
Screws (2)
Binding
Wire Ports (2)
(Polarity: Left +, Right –)
Retaining
Screws (2)
