AS 680/682
Description, Operation and Maintenance Installation and Setup
ADS−B
3−29Ed. 10.07
7 Verify that the site monitor responds with the following output:
DF: [18]
ADDRESS: [<24−bit address intended for that site monitor, e.g.
7CF726>]
PERIOD: [0.5]
JITTER: [1]
FW−VERSION: [<current FW Version>]
BITE−STATUS: [OK]
8 Leave minicom by entering CTRL−a and then x. Disconnect the serial cable
9 Connect Ethernet crossover cable to Ground Station Auxiliary Port located at the GTS module in
the upper left slot of the SPU. Connect the other side to the LCMS Ethernet port.
10 Start the Ground Station.
11 Verify that all failure LEDs are off after the Ground Station boot up sequence.
12 Start the TSC from the LCMS desktop.
13 Verify that the Ground Station parameters are properly retrieved by the TSC.
14 In the TSC, go to the Network page
15 Enable the Raw Data Stream Output.
16 Verify that the IP−Address for the Raw Data Stream is configured as 192.168.23.2
17 Verify that the Port for the Raw Data Stream is configured to 50001
18 Change the visible desktop window by selecting one of the blue areas within the desktop panel
at the bottom of the desktop.
19 From the ADS−B Tools menu select the Raw Data Recording Application (RRC).
20 On the RRC Parameter page, set the interface, from which the RRC will read data, to lcmsmaint
and the port to 50001.
21 Disable the output to file checkbox. Enable the output to screen checkbox.
22 Go to the RRC Filter page and disable the filters Record only groundstation and Re-
cord only downlink format.
23 Enable the filter Record only Mode S address (HEX) and enter the site monitor’s 24 bit
address as it should be according to the planned configuration.
24 Switch to the Screen Output page and start the recording by clicking on the red button below
the File menu or by selecting the menu item Command|Record .
25 Verify that raw data are received.
26 Verify that column no. 6 contains the value 18 corresponding to the downlink format DF−18 that
the site monitor is configured to send.
27 Verify that column no. 7 contains the 24−bit address that the site monitor is configured to send
(e.g. 7CF726).
28 Verify that the last digit before the decimal dot in column no. 5 (message time of arrival counter
in seconds) occurs twice in sequence corresponding to a twice per second update rate. Note that
occasionally there could be only 1 occurrence of a digit or three. This is due to the configured jit-
tered transmission interval of the site monitor.
29 Verify that column no.8 (containing the message data) are always the same and contain 6 zero
digits at the end. This is the result of the CRC check. 6 zeroes indicate that the message has been
correctly received.
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