AIS CTRX GRAPHENE Class B AIS Transponder Manual
1.4E 33 CTRX GRAPHENE Manual
Figure 18 AIS CTRX GRAPHENE Diagnostics field provides good information about the transponder's status and the
software version.
Before the AIS CTRX GRAPHENE has been programmed, both the yellow and red
LED’s will light, indicating that the unit is not programmed (no valid MMSI number).
This is shown both on the transponder and on the status panel in proAIS2. The most
common fault is however, that the transponder has no valid MMSI, so always check
this first.
The red ERROR LED can also have the following meaning:
• The transmitter is stuck in transmit (transmitted longer than 1 s).
• The GPS has not started to navigate after 30 minutes
• Excessive VSWR value (> 3:1) (faulty antenna or cable problem).
• Background noise is too high which prevents the transponder from
transmitting.
• Faulty transmitter (no power output)
The yellow LED will light to indicate a change in the operating status. The situation
has called for the transmitter to stop transmitting.
The yellow TX TIMEOUT LED can mean the following conditions:
• The transponder GPS has not started to navigate or does not navigate which
means that the transponder cannot transmit as the position data is not valid.
• The transponder cannot transmit because the channel is occupied by another
transponder transmitting
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