7
RR-94845SL
VIDEO INPUT / OUTPUT CONNECTIONS
Video input and output connections are located on the rear of the 980 series units. A BNC
connector is provided for each channel. The video inputs are connected to an appropriate 75
Ω
baseband video source such as a camera or a video recorder output. The 75
Ω
video outputs
can be looped through typical baseband video inputs of switchers, recorders and other
equipment as required. For proper operation, the outputs must be terminated with 75
Ω
. For
optimum performance the video cables should be the shortest length of coax practical.
The location of a video input to the RT-94845SL will be mirrored as a video output at the RR-
94845SL. For example, the Channel 2 video input on the RT-980-1550 will become the Channel
2 video output on the RR-980-1550 after traveling across the fiber infrastructure.
ETHERNET DATA INPUT / OUTPUT CONNECTIONS
A RJ45 connector is used to connect UTP Ethernet data to the 45 series units.
MDI / MDIX Switch
All Ethernet equipment is designed with a MDI interface port or a MDIX interface port. The terms
MDI and MDIX refer to a specific orientation of the transmit data signal and the receive data
signal on the RJ45 connection to the unit. Some units have a switch built into them that allows
you to choose the port to be either MDI or MDIX. Other units can auto-configure to either speed.
Typically, a computer or terminal is wired as an MDI port connection and a network hub or
switch is wired as an MDIX connection. The MDI configured device is connected to the MDIX
device with a straight through Ethernet patch cable. Whenever a connection from one MDI
device to another MDI device is required, the use of a crossover cable is required to reorient the
signals, making the first device appear as if it was configured as MDIX. The RTX-45-1490 and
RRX-45-1490 are shipped in the MDI configuration. Therefore, when connecting to a MDI
configured device a crossover cable should be used. In the event the proper cable is not
available, an external switch is provided at the rear of the 45 series unit for reconfiguring the
unit as a MDIX port.
If the 45 series unit is connected to an auto-configure device, it is not
necessary to change the MDI / MDIX switch.
