CR-SEH
Figure 4. Remote Radio Assembly
Note that the remote radio assembly should be mounted on a tower or building top oriented as in Figure 4.
It is important that the RF connector on the remote radio assembly point to the ground to avoid any issues
with rain water.
Important Note:
If an alternate source of power is used with the CR-SEHX, it must be limited to
+12VDC +/-10%. Failure to meet this specification can result in damage to the
remote radio assembly.
Connectors
The 10/100BaseT Ethernet connector is the standard RJ-45 connector and is located on the bottom front
of the CR-SEHX. The CR-SEHX 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-SEHX to other devices through a hub, the CR-SEH must be
connected to the uplink port on the hub. (See SEH Section)
The SYNC IN and SYNC OUT signals are provided for special applications where multiple master CR-
SEHs 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-SEHs must be designated as the sync
master. See the section
CR-SEH/Radio
Commands for details. If there are no co-located master CR-SEHs,
sync should be left disabled.
The Console port is an RS-232 serial port that may be used to configure the CR-SEHX. Connection to
this port is made with the 9-pin D to RJ-11 serial cable included with the CR-SEHX. This is useful when
the default IP address of the CR-SEHX cannot be used with the existing network preventing configuration
through the IPHunter utility. See the section
Configuring the CR-SEH
for details of using this port.
The power connector is a 2-pin DIN type connector. The provided AC adapter provides a 12 volt power
level to the CR-SEHX. The CR-SEHX must have a DC voltage of 12VDC +/-10% alternative power
supplies are to be used.
2000- 2004 Cirronet
Inc
6
M-2411-0013 Rev A
