5.
In the command utility window that appears, click Diagnostic button to
get the battery voltage.
The MT9 does not operate when the battery voltage is lower than 7V.
You must apply the same interrogation code to both responder and transponder modes in
the configuration software. If your responder signal is not sent to the beacon (in case of a
cable cut), the beacon will automatically move to transponder mode.
In this case it is necessary to have the same interrogation code so that you can continue to
follow your beacon. Keep in mind that it will be necessary to change the configuration of
both Gaps when the responder signal is not sent anymore.
Gaps M7 positioning accuracy depends mainly on Signal to Noise Ratio. This Signal to
Noise Ratio depends on the beacon transmit level, the range to the beacon, the noise level
and the vertical angle. In best case (SNR_in > 20 dB and in vertical conditions), the posi-
tioning accuracy is 0.1% of the slant range (CEP-50). i.e. 100 cm accuracy at 1000 m of
distance. If SNR_in is 10 dB, the positioning accuracy is 0.17% of the slant range (CEP-
50). For low SNR (around 0 dB), the positioning accuracy is 0.5% of the slant range (CEP-
50). When tracking horizontally, the positioning accuracy is 3 times less.
Gaps M5 positioning accuracy depends on the same criterias and is 0.5% of the slant range.
Gaps M7
The maximum range depends on the noise level and beacon transmit level. For a TL = 191
dB ref µPa :
•
if noise level is 60 dB ref µPa: max range is 5 000 m (example of buoy
installation - SEA STATE 6 + 10 dB)
•
if noise level is 70 dB ref µPa: max range is 3 600 m (example of quiet
vessel)
Содержание Gaps M5
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