About Slope And Ramping - Simrad ES80 Reference Manual

Reducing rattle noise
Ensure that no parts near the transducers can rattle as a result of water flow or vibrations.
Reducing interference
Interference from the transmission pulses from other hydroacoustic instruments on
board the vessel is difficult to avoid. The problem may be reduced by choosing the
working frequencies carefully and to some extent by separating the different transducers.
On vessels with a large number of separate hydroacoustic systems installed and in
simultaneous use, a separate synchronizing system (for example the K-Sync) should
be considered.
Reducing electrical noise
• Place the transducer cables in a metal conduit from the transducer to the Wide Band
Transceiver (WBT). Terminate the conduit as close to the transducers and Wide Band
Transceiver (WBT) as possible.
• Make sure that all units are properly grounded, as this is important to avoid electrical
noise.
• Use shielded cables with correct grounding.
• Separate ES80 cables from other cables with high voltages, large currents or
transients. Place all high voltage power cables in metal conduits.
Related topics
Acoustic noise, page 462
BITE: Noise page, page 409

About Slope and Ramping

The value identifies how fast the output power in each transmission ("ping") goes
Slope
from 0 to maximum. The
The value (in %) indicates the amount of the pulse duration that is spent during this
increase. For example, if the
"ping" is spent building up the power to maximum.
In the ES80, this setting is automatic, while on scientific echo sounders you can adjust it
manually.
406273/C
is also commonly known as
Slope
value is 50%, it means that half the duration of the
Slope
Concept descriptions
.
Ramping
469