USER & INSTALLATION MANUAL
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extended navigation & communication
ExNC
extended navigation & communication
ExNC
9.3 Regional channel management information (ACA)
Your transponder is able to receive regional channel management information (ACA)
in two ways:
• ITU-R M.1371 message 22 or a
• DSC telecommand received on channel 70,
ACA Message Format
$--ACA,x,llll.ll,a,yyyyy.yy,a,llll.ll,a1,y1y1y1y1y.y1y1,a2,x1,x2x2x2x2,x3,x4x4x4x4,
x5,x6,x7,a3,x8,hhmmss.ss*hh <CR><LF>
• x = Sequence Number , 0 to 9
• IIII.II, a = Region Northeast corner latitude – N/S
• yyyyy.yy,a1 = Region Northeast corner longitude – E/W
• llll.ll, a = Region Southwest corner latitude – N/S
• y1y1y1y1y1.y1y1,a2 = Region Southwest corner longitude – E/W
• x1 = Transition Zone Size
• x2x2x2x2 = Channel A
• x3 = Channel A bandwidth
• x4x4x4x4 = Channel B
• x5 = Channel B bandwidth
• x6 = Tx/Rx mode control
• x7 = Power level control
• a3 = Information source
• x8 = In-Use Flag
• hhmmss.ss = Time of "in-use" change
Although ExNC s
trives for accuracy in all its publications, this material can contain
errors or have omissions. This manual is subject to change without prior notice.
ExNC shall not made liable for any specific, direct or indirect, incidental or
consequential damages out of its use.
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