L3 Technologies AISA1 Manuale Utente

The output data and formats are in the form of four Long Range reply sentences,
LRF, LR1, LR2, and LR3, refer to Table 1–6.

The LRF sentence provides the “Function Reply Status” for the requested

information. Following is a list of “Function Reply Status” characters with

the status:

2 = Information available and provided in the following LR1, LR2, and
LR3 sentences.

3 = Information not available from the AIS system.

4 = Information is available but not provided (i.e. restricted access deter-
mined by ship’s master).

The LR1 sentence identifies the destination for the reply and contains the

information items requested by the “A” function identification character in

the LRF sentence.

The LR2 sentence contains the information items requested by the “B, C,

E, and F” function identification characters in the LRF sentence.

The LR3 sentence contains the information items requested by the “I, O,

P, U, and W” function identification characters in the LRF sentence.