User's Manual

Rajant Corporation ME BreadCrumb User Guide
A. Bulkhead antenna connector SMA(F)
B. P101 6-pin Ethernet connector ETH0, COM B, USB
C. SW1 toggle power switch
D. 2-pin vehicle power connector
E. Bulkhead antenna connector SMA(F)
2.4 NETWORK FEATURES
Each BreadCrumb ME device has one IEEE 802.11b/g wireless NICs (network interface
cards), two externally accessible Ethernet ports and one externally accessible USB2 port. The
wireless NIC, enables the BCWL components to communicate and form the wireless LAN,
as well provide access for wireless clients to connect and communicate. The Ethernet ports
provide hardwired connections to auxiliary network devices and clients. The Ethernet ports
also provide a secure connection for some device configuration options which are not
available through wireless connections. The USB port is used primarily for upgrading
firmware.
2.5 ANTENNA FEATURES
The BreadCrumb ME makes use of two antenna ports, which should have directly connected
omni-directional antennas that are used alternately by the BreadCrumb, based on which one
has the better signal.
Both external antennas MUST be connected to the device at all times for
proper operation.
Connecting the antennas after booting a BreadCrumb will have negative
consequences.
2.6 POWER FEATURES
Each BreadCrumb ME is shipped with a 12 V AC/DC power supply. The BreadCrumb ME
may, however be powered by any regulated DC power source that is 6-18 V DC, 2.5 A.
Primary power is provided though the P102 4-pin power connector (See
Figure 1).
The BreadCrumb ME also incorporates a Li Ion rechargeable standby battery which can
provide power to operate the unit for several hours if the primary power is not present. The
standby battery is recharged through the primary power input.
- 10 -