APPLIED ACOUSTICS Dura-Spark L80, Operation Manual, Page: 6 / 20

Dura-Spark L80 Operation Manual
SPK-L80-8000/A
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Page 6 of 20
2. Components
•
Dura Spark Catamaran complete with 2 x40 Tip Long Life Sparker Arrays.
• HVC2002 High Voltage Cable complete with HVJ2001 Junction Box.
3. Theory of Operation
The sound wave is generated by the electrical energy in the capacitors of the
CSP-Nv discharging across the sparker tips to the earth of the tow-body, through
the sea water to produce a pressure wave.
With increased energy levels a secondary discharge pulse is generated after the
initial discharge. The time delay between initial and secondary is proportional to
the level of energy being discharged. The secondary pulse is commonly known
as the ‘bubble pulse’.
The joule per tip rating should not be exceeded, each sparker tip is rated to 8-
10joule maximum. This is a total max power of 350joule. Exceeding this level will
result in damage to the sparker tip.
Note: -
To prevent the bubble pulse the tip to power ratio should not exceed
2-3J per tip.
The joule per tip rating should not be exceeded, each sparker tip is rated to
8-10joule maximum. This is a total max power of 350joule. Exceeding this
level will result in damage to the sparker tip.
4. Dura Spark L80 Power Levels
80 Tips
Min 100J
Max 350J
Typical 200J