Operating Manual

Operator’s Manual M365-491
1-2 Chapter 1
October/2005 General Information
1-2.2 Variables
Variable expressions or terms that are user defined are presented in italic type. For example, an
instruction to enter a path followed by a backslash, followed by a filename, followed by pressing the
Enter key is presented as follows:
Type path\filename <Enter>
1-2.3 Screen Display
Responses that are displayed on a computer screen are presented in a sans-serif typeface. For
example, if the word “READY” is to be displayed on the screen, it is presented as follows:
The display will read READY.
1-3 TERMINOLOGY
The following terms are used frequently throughout this manual:
• Client Station: Any computer that uses the services provided by the CAP. This can
be a computer with a wireless Local Area Network (LAN) card
accessing the CAP directly, or a computer on a wired LAN that is
connected to the CAP.
• Management Station: Any computer that can access the CAP management tool.
• Wireless Cell: The area in which the CAP provides a wireless signal.
1-4 EQUIPMENT DESCRIPTION
The Cabin Access Point (CAP) (
Figure 1-1) is a wireless communication device designed for use in
airborne environments. The CAP utilizes Direct Sequence Spread Spectrum (DSSS) radio
technology in the 2.4-GHz Industrial, Scientific and Medical (ISM) radio frequency spectrum to
communicate with IEEE 802.11b compliant wireless devices. The CAP utilizes Orthogonal
Frequency Division Multiplexing (OFDM) radio technology in the 2.4-GHz ISM radio frequency
spectrum to communicate with IEEE 802.11g compliant wireless devices and in the 5-GHz ISM
frequency spectrum to communicate with IEEE 802.11a compliant wireless devices. The CAP
provides a bridge between the aircraft IEEE 802.3 compliant wired Ethernet LAN and wireless
devices. Two aircraft level discrete inputs are provided for remote on/off control and RF
enable/disable. Two discrete outputs provide operational status. Operation of the CAP is controlled
by operating software. The CAP can be configured with CAP operating software to configure the
CAP as a cabin wireless LAN unit (CWLU) to create a wireless local area network (WLAN) aboard
the aircraft, or with wireless access bridge (WAB) operating software to configure the CAP as a
terminal wireless LAN unit (TWLU) to establish a wireless bridge between the aircraft network and
a ground-based network. The part number for the software installed in your CAP is indicated on the
software label located on the top of the CAP unit.