AS 680/682
Maintenance and Repair Description, Operation and Maintenance
ADS−B
7−10 Ed. 10.07
− On the TSC ’Telegram Filter’ page, verify that at least DF−17,−18 and −19 are enabled. For the
test enable all formats (switch all on, set values).
− On the TSC ’Telegram Check’ page, make sure that the required minimum ’Signal Amplitude Level’
is set to 0x00.
7.2.3.4 Tests if no Asterix Data
Any BITE failure? If yes, try looking at more detail in the TSC (see also previous tests).
7.2.3.4.1 Check Output Configuration
− On the TSC ’Network’ page, check that Asterix data ’Output’ is enabled on the affected output port.
− Check that its destination IP address/Port is consistent with the intended output interface and the
IP address/port settings of the destination.
7.2.3.4.2 Check Network
See previous test, refer to section 7.2.3.2.
7.2.3.4.3 Check Test Target Report Output
− On the TSC ’Site Monitor’ page, verify that a test target report is output regularly (e.g. ’Report Trig-
ger’ condition set to ’biteNoError’, ’Report Interval’ set to 1s). Make sure that there is no BITE error
(RED). A test target report will be output.
− With the test target report activated, verify on the ’ADSB’ page that the Asterix ’Data Rate’ is greater
than zero.
− On the TSC ’Groundstation’ page, verify SIC/SAC settings to the expected value of the receiving
element (e.g. T’SD, ARC, ATC−Center).
− On the ’Groundstation’ page, verify the ’Time Synchronisation’ is set to GPS if a GPS is available,
or to NTP with a correctly configured ’NTP Server IP−Address’ if an NTP server is available (with
incorrect timing, applications like ATC−Center systems reject Asterix target reports).
7.2.3.4.4 Check Raw Data Reception
− See also previous test.
− Try recording raw data if a network interface is available.
Are there any messages DF−17, −18 or −19?
− On the TSC ’Telegram Filter’ page, verify that ADS−B formats DF−17, −18 and −19 are enabled.
− On the TSC ’ADSB Filter’ page, make sure that all filters are set as insensitive as possible (i.e. wide
open, ’both’, ’Cover Range’ = −1, altitude filters ’Max./Min. Flight Levels’ to 1500 and −15).
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