BreadCrumb
®
ME3 User Guide Rajant Corporation
Version: 1.02 03-100116-001
1.3.3 18-Pin Amphenol Connector
The majority of the signals and features of BreadCrumb ME3 can be accessed through the 18-pin
Amphenol connector on the enclosure (see Figure 4). The most important of these interfaces are
external power, Ethernet, and USB, which are described in more detail in the following sections.
The 18-pin Amphenol connector interfaces to the ME3 cable assembly that provides access to the
Ethernet and USB ports of the device, and to the external power supply.
1.3.3.1 Power
The external power interface to BreadCrumb ME3 resides on the 18-pin Amphenol connector (see
Figure 3 and Figure 4). The device accepts external power in the range of 6 VDC to 16 VDC @ 15
W. However, to charge the internal ME3 battery pack at least 9 VDC input is required.
BreadCrumb ME3 ships with a 12 V, 35 W AC/DC external power supply. This power supply in
turn connects to the 4-pin Amphenol connector on the ME3 cable assembly to provide power to the
device.
The power consumption of BreadCrumb ME3 ranges from a minimum of about 6 W at idle to a
maximum of about 10 W at full load, using the ME3 external power supply. In general, the device is
more efficient at lower voltages.
1.3.3.2 Ethernet
BreadCrumb ME3 contains two 10/100 Base-TX Ethernet ports, which can be accessed through
6
Figure 4: 18-Pin Amphenol Connector.
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