NGT-200 USER MANUAL
NGT-200 UM.E 20210520-02
26
Start right now-F2
–
press
F2
if you want
to send request immediately without slot sync;
note that some AIS stations may not respond
correctly in such case;
Wait for Request
–
Tester waits for any
message from tested AIS station for slot
synchronization and then transmits request –
Message 15 to the tested AIS station.
Then the Tester goes to receive mode and waits
for Message 3. All other messages will be
ignored.
The received Message 3 will be displayed in following view:
Rx A
– the AIS channel where the message is
received;
ID 3
– the number of Message in accordance
with M.1371-5;
413000000
(
as example only
) – the tested AIS
station transmitter’s MMSI;
RSSI 41.5 dBm
– AIS station transmitter
power level in dBm;
S
- test configuration is
“Power Sensor”;
Slot x,
(
where x from 0 to 2249
)
–
received slot number (informative);
120⁰31.63E
(
as example only
)
31⁰26.93N
– the AIS station coordinates.
The message 3 as the response to request should be transferred and received in 60
seconds after the sound was terminated. If the AIS station has reception indicator
(usually it is RX Led), after the sound was terminated this LED should confirm the
reception of the request.
Interrogate Msg5
Menu – allows to send the request for message 5 (Msg5).
In accordance with M.1371-5 Message-5 is Static and voyage related data.
= REQUEST 3 ChA =
RxA ID 3 413000000
dF -123 Hz
S RSSI 41.5 dBm
Slot 160
..................
120⁰31.63 E
31⁰26.93 N
==REQUEST 3 ChA ==
Rx* ID * *********
dF **** Hz
S RSSI **** dBm
Slot ****
..................
Start right now-F2
Wait for Request
