NGT-200 USER MANUAL
NGT-200 UM.E 20210520-02
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The message 5 as the respond 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.
Polling DSC Menu
This menu item allows sending the request in DSC channel for vessel name
programmed in AIS station and receiving the response.
Note: In accordance with ITU-R M.1371-3(-4, -5) (in opposition to M.1371-2),
the AIS station response in DSC channel is not strictly regulated.
The following data is displayed in this menu:
To: 413000333
– requested station MMSI;
From: 413999997
– Tester’s MMSI.
The requested station MMSI is determined by
message received in
AUTO TEST MODE
. But
It is possible to change the MSSI code manually
.
You may directly input MMSI using numeric
buttons or selecting the position by buttons
◄
and
►
, tune it by buttons
▲
and
▼
.
If the MMSI code is correct press
Enter
to
send the request. The sound signal confirms the
request was sent in DSC channel. The tester
goes to waiting mode for response in DSC
channel. The tester will wait for 20 seconds for
AIS station response.
After the respond message is received the following information will be displayed:
Format: Individual
– format of received
DSC message;
Category: Inform. (Information)
–
category of received DSC message;
From: 413000333
– AIS station’s MMSI;
Name: SUZHOU
– vessel’s name where the AIS
station is installed;
RSSI: 41.1 dBm
– power level of received
signal in dBm;
FCh70: 156525001Hz
– measured carrier
frequency.
== Polling DSC ==
To: 413000333
From: 413999997
Start - ENTER
== RECEIVED DSC ==
Format: Individual
Category: Inform.
From: 413000333
Name: SUZHOU
RSSI: 41.1 dBm
FCh70: 156525001Hz
