User`s manual

CR-SEB

Figure 1 identifies the various connectors and LEDs of the CR-SEB.

Figure 1. CR-SEB Front Panel Diagram

The RF connection on the CR-SEB is the antenna connector on the top of the CR-SEB. The antenna

connector is a reverse TNC type connector. An antenna may be connected directly to this connector.

Alternatively, an antenna may be located away from the CR-SEB using RF cable to connect the CR-SEB

to the antenna. Cirronet does not recommend using RF cables longer than 5 feet. If more distance is

required between the CR-SEB and the antenna Cirronet recommends using the CR-SEBX. If the CR-

SEBX is not used, high-quality, low-loss RF feed line must be used.

Connectors

The 10/100BaseT Ethernet connector is the standard RJ-45 connector and is located on the bottom front

of the CR-SEB. The CR-SEB is set up to use a straight through cable to connect to a PC. If a straight

through cable is used to connect the CR-SEB to other devices through a hub, the CR-SEB must be

connected to the uplink port on the hub. A cross over Ethernet cable is also provided to connect to

downlink ports on a hub.

The SYNC IN and SYNC OUT signals are provided for special applications where multiple master CR-

SEBs are co-located. The synchronizing signals are RS-485 levels and may be connected using an RJ-11

connector. If the sync signals are required, one of the master CR-SEBs must be designated as the sync

master. See the section

CR-SEB/Radio Commands for details. If there are no co-located master CR-

SEBs, sync should be left disabled.

 2000- 2004 Cirronet Inc 2 M-2410-0025 Rev A