Installation manual

Installation
Apollo MX20 Installation Manual
15
2.5.1 MX20 BASIC DATA PORT CONFIGURATION
The basic MX20 supports four I/O ports on connector J1. Three of the ports are RS232 and one is RS422.
The usage of each port is assigned during the configuration procedure (see section 2.7). The diagram
below provides an example of a configuration for the data ports. Samples of typical wiring configurations
are shown in section 2.5.7.
The following table shows the suggested port usage, however note that the software must be configured to
match the installed MX20 wiring configuration. Note that only one traffic source may be connected to the
MX20 I/O at one time.
Table 2 - Preferred Data Port Configurations
MX20 With GPS MX20 Without GPS
PORT 1 RS232 GX50/60* or equivalent GX50/60* or equivalent
PORT 2 RS232 Altitude Encoder* or option Altitude encoder* or option
PORT 3 RS232 Internal GPS** SL30, or option
PORT 4 RS422 UAT Datalink Radio or option WX-500 or option
* A GX-series unit running software version 3.2 or higher and enabled for extended mode and a CNX-series
unit is capable of receiving altitude data from the altitude encoder and passing the data to the MX20. This
configuration opens up an MX20 port for other options.
** If the MX20 is configured with an internal GPS engine, Port 3 is not available for external connections.
Figure 12 – Preferred Data Port Description