28302
29
Zoom out
Zoom in
Previous page
1/110
Next page
2.11.2 Supresión de la cola del fondo
Como ya se mencionó anteriormente, el pescado cercano al fondo es difícil de ob-
servar debido a las reflexiones procedentes del propio fondo. Esta observación se
facilita seleccionando la longitud de impulso de transmisión corta, lo que disminuye
la longitud de la cola del eco del fondo.
1. Pulsar la tecla [MENU] para abrir el menú.
2. Pulsar para seleccionar MENU y para elegir COMN.
3. Pulsar o para seleccionar PULSELENGTH y pulsar . Se abre la siguiente
ventana de selección.
4. Pulsar para seleccionar SHORT (corta).
5. Pulsar la tecla [MENU] para registrar la selección y cerrar el menú.
2.11.3 Presentación de ecos débiles
Los ecos de los blancos llegan al transductor con intensidad inversamente propor-
cional a la distancia, supuestos blancos de la misma naturaleza (características de
reflexión similares). Si fueran así presentados, el observador no podría estimar el
tamaño real de un blanco a partir del tamaño de su eco en la presentación. Este
inconveniente se salva mediante el uso de la función TVG, la cual compensa la
atenuación de propagación de la energía sónica: suprime la amplificación a distan-
cias muy cortas aumentándola gradualmente en función de la distancia. Así, los
ecos de blancos similares son similares, independientemente de las respectivas
distancias. La función TVG también actúa como supresor de ruido.
Nota: Un nivel TVG excesivo puede eliminar ecos débiles.
2-13
Fig 2-14 Como trabaja el TVG
29


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Furuno CH250 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Furuno CH250 in the language / languages: Spanish as an attachment in your email.

The manual is 1,52 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Furuno CH250

Furuno CH250 User Manual - English - 116 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info