FreeFlight 87099 Series, Installation Manual, Page: 15 / 34

XPLORER ADS-B Receiver
Installation Manual
87214, Revision A December 3, 2012 II-3
RS-232 SERIAL PORTS
Port PIN SIGNAL I/O DESCRIPTION
1
J6-12 232 RxD1 I Serial Port 1 Data In
J6-5 232 TxD1 O Serial Port 1 Data Out
2
J6-3 232 RxD2 I Serial Port 2 Data In
J6-11 232 TxD2 O Serial Port 2 Data Out
5
J6-13 232 RxD5 I Serial Port 5 Data In
J6-6 232 TxD5 O Serial Port 5 Data Out
Of these three physical interfaces, two are available for connecting to two different
functional interfaces:
Functional Interface Serial Interface Comment
GPS Input / Out Serial Port 1
FreeFlight TSIP protocol GPS or
NMEA compatible GPS
Display Serial Port 2 TIS-B / FIS-B
The remaining serial interface, Serial Port 5, is the ASCII Maintenance interface terminal
connection and is not reconfigurable. (Serial Ports 3 and 4 are reserved for internal
system usage and are not accessible.)
For the serial version of the XPLORER (PN 87099-01 or -11), these interfaces can be
configured by using the ASCII Maintenance Interface to enter Configuration Mode of the
XPLORER. This is described in more detail later in this Installation Manual.
2.6.3 Time Mark Input (PPS)
The Time Mark Input is an RS-422 differential pair for the one pulse-per-second (PPS)
input from a GPS like the FFS 1201. The Time Mark input pin connections are as
follows:
Time Mark Input
PIN SIGNAL I/O DESCRIPTION
J6-9 PPS IO + I/O Internal/External GPS Pulse Per Second Out/In +
J6-1 PPS IO - I/O Internal/External GPS Pulse Per Second Out/In -
Note: The Time Mark input must be synchronized to UTC.
2.6.4 Maintenance Interface (RS-232 Version Only)
The Maintenance Interface is available in the serial-only version of XPLORER (PN 87099-01 or -
11). This interface is used to communicate between XPLORER and a Personal Computer (PC)
using the Port 5 RS-232 interface. The Maintenance Interface can be used to configure the
system, provide additional status information, and update system software. An RS-232 to USB
adapter assembly will be required and is described in Section VII.
2.6.5 Status LEDs
Seven external LEDs on the front of the enclosure indicate system status to the installer. The
LED locations and functions are shown on the systems’ label attached to the unit. The following