CSPN Capacitor Charging Unit Operation Manual
CSP-CSPN-8000/1
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Operation of the CSP-N with a Boomer Sound Source
A boomer plate as a sound source produces a single pulse and the amplitude and duration of this
pulse is controlled by the energy going into it. The energy is derived from the voltage and the
quantity of energy stored in the CSP unit. Traditionally, boomers have operated from around 3500
to 3800 volts. However a feature of the AA200 and AA300 boomer plates is that they will produce
a longer pulse (and hence more penetration) with a lower voltage and higher capacitance from the
energy source (CSP-D). The LO voltage setting achieves this so, for example, using an AA300
boomer plate at 200J at 3 pulses per second may be a common way of using the transducer with
the traditional 3.5 kV supply voltage using switch positions 2 and HI. However if position 4-LO is
used, the same energy is being applied to the transducer although at a lower voltage, so the pulse
length is increased.
Load Specifications
The CSP-N units are designed to deliver high currents into boomer or sparker type loads. The
loads are quite different in make-up.
Boomer Load
A boomer plate consists of a coil imbedded in an epoxy or plastic material and thus by its nature is
an inductive load. The inductive ‘kickback’ is controlled by circuitry inside the CSP. Typical currents
into a boomer plate are listed below:-
Energy (HI)
AA202 Plate
EG+G Uniboom
100J
800A
900A
200J
1050A
1200A
300J
1250A
1350A
The currents will vary according to the length and type of cable used between the load and the
energy source. Note that the CSP-N units are specified for AAE and EG+G boomer plates and
have not – to date- been tested with any other type.
Ensure that the energy and repetition rate do not over drive the sound source! (Boomer plate -
check the boomer plate manual).
Summary of Contents for CSP-N 1200
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