CONNECTING A DPG
Configurations with up to 8 APMs and up to 4 DPGs
0311385 Issue : April 1999
2-8
The sweeps then start automatically as soon as the vibrators are ready and a minimum
delay has elapsed after the start of the previous sweep. This minimum time is
“Slip time” + 2 s (when using 2 T0 parameters in the DPG radio transmission).
If no message is sent by the vibrators, the sweep starts at the end of a programmable
“Slip window” delay after the end of the previous sweep. Setting this delay to 99 s
amounts to setting an infinite delay (no start).
T: 0.5 s + FO-TB time (≈1.5 s with 2 T0 data) ≈ 2 s
Slip time
Slip time
Slip time
Slip time
Slip window
Fleet 1 sweep
Fleet 2 sweep
Fleet 3 sweep
Fleet 1 sweep
Fleet 2 sweep
fleet 2 Ready fleet 3 Ready fleet 2 Ready
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