Simrad ES80 Reference Manual page 324

Simrad ES80 Reference Manual
Description
The transmission ("pinging") from the ES80 can be turned on or off. Select the middle of
the button to see the choices, or either side to enable or disable transmission. The ping
symbol on the right side of the button is also used to transmit single pings.
Once pinging is On, use the
transmit.
Tip
The phrase ping rate is used to describe the parameter that controls how often the ES80
can or shall transmit acoustic energy (a "ping") into the water.
If you observe a pelagic echo on the ES80, and it seems to follow the bottom contour, it
may in fact be a false echo from the previous transmission ("ping"). The only way to
remove this false echo is to reduce the ping rate. If you do this, all the echoes from the
previous ping will have disappeared before you transmit the next.
On old paper based echo sounders the pen spent a long time on the rear side of the paper
tray, and that reduced the ping rate. The ES80 is a lot faster, and you may send out a
ping even before the energy from the previous ping has disappeared.
Details
On
The ES80 "pings" (transmits) energy into the water. The ping mode if controlled
by the
Ping Mode
Off
The ES80 does not "ping". No transmissions take place. When
the ES80 stops with the current echogram shown.
Tip
If you wish to establish a passive system (transmission switched off, but normal
reception), use the function offered by the
If you wish to investigate the ambient noise, choose Passive mode in the
dialog box. Any noise or disturbance in the water - within the
Operation
transducer's frequency range - will then be detected and shown. This feature will
for example be able to pick up disturbances from other hydroacoustic systems on
your own vessel, or on other vessels in the vicinity.
Auto Start
The Auto Start function allows the ES80 to start "pinging" automatically when the
software program is started. Two conditions must be present:
• The ES80 installation must be operational with all relevant transceivers and
transducers.
• The ES80 was in Normal mode the last time you switched it off.
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function to choose how often the ES80 shall
Ping Mode
and settings.
Ping Interval
dialog box.
Normal Operation
is set to Off,
Ping
Normal
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