4-60
6205s2 BATHYMETRIC AND SIDE SCAN SONAR
0025262_REV_A
4.2.3.4
One PPS Port Configuration
One Pulse Per Second (1PPS) is a feature in many GNSS units to provide an accurate timing mechanism to
synchronize various devices to a precise, common clock. The Edgetech 6205s2-R (
.) rack-mount
provides a 1PPS port to physically connect to a PPS-capable unit. The logical configuration is done in the
attached GNSS configuration and activating the 1PPS option in
CAUTION!
The 6205s2 system is optimized to work with a falling edge
1PPS signal.
The EdgeTech Isolator Board identifies the input signal's falling edge and reconstitutes it as a rising edge
2.27ms pulse. This signal is passed down the deck cable to the subsea electronics, where the rising edge
is utilized as the 1PPS time sync reference. Refer to
. This configuration produces negligible
latency when a falling edge 1PPS signal is injected at the topside.
NOTE:
To learn more about the EdgeTech Isolator Board, refer to the
Figure 4-4: 6205s2 System Is Optimized To Work With A Falling Edge 1PPS Signal
A rising edge trigger can be used when a falling edge trigger is not available. There are no software or
hardware adjustments required. However, a latency equivalent to the input trigger’s pulse width will be
generated. As a result, EdgeTech recommends using a pulse width (duration) of not longer than 1ms if a
rising edge trigger must be used. Static latency correction occurs during the patch test process in third-
party software packages.
Summary of Contents for 6205S2
Page 32: ...2 32 Figure 2 2 6205s2 Sonar Head with Adaptor Flange ICD...
Page 33: ...2 33 Figure 2 3 6205s2 Side Scan Transducer...
Page 34: ...2 34 Figure 2 4 6205s2 Side Scan Transducer Details...
Page 35: ...2 35 Figure 2 5 6205s2 Deck Cable Wiring Diagram...
Page 36: ...2 36 Figure 2 6 6205s2 GNSS INS Deck Cable Wiring Diagram...
Page 37: ...2 37 2 6 2 6205s2 Topside Figure 2 7 6205s2 Rack Mounted Topside...
Page 38: ...2 38 Figure 2 8 6205s2 Rack Mount in Case...
Page 41: ...3 41 3 1 2 2 Sonar Processor Endcap and Pinout Drawings Figure 3 5 6205S2 Forward End Cap...
Page 42: ...3 42 6205s2 BATHYMETRIC AND SIDE SCAN SONAR 0025262_REV_A Figure 3 6 6205s2 Aft End Cap...
Page 46: ...3 46 Figure 3 11 6205s2 Acoustic Center Location X Y Z and Bolt Pattern...
Page 47: ...3 47 Figure 3 12 6205s2 with Adaptor Flange Acoustic Center Location X Y Z and Bolt Pattern...
