Question on Deep setting?

[RandyNorthridgeca]

I don

 

[Captain Kirk]

Randy,

ABOUT THE GAIN FUNCTION

GAIN is a linear function which means that all signals get "amplified" by the same amount until the resulting signal hits the limit value. What follows are some illustrations.

#1 If you set the GAIN to 1, then for most targets you will get a measure of how deep the target is by the loudness of the tone. The disadvantage is that the deeper targets may produce tones that will be so weak that they are easy to miss.

#2 If you set the GAIN to 10, then the deeper targets will produce a louder tone than for the the GAIN setting of 1. This makes the deeper targets easier to hear. The disadvantage is that many of the shallow targets will hit the limit and all have the same loudness. This causes you to lose the ability to determine depth based upon the loudness of the tone (for the shallower targets).

ABOUT THE DEEP FUNCTION

DEEP is a nonlinear function which means that the weaker signals will be amplified more than the stronger signals. This makes the deeper targets easier to hear without driving the shallow targets into the limit. The disadvantage is that your overall ability to judge depth by tone loudness becomes somewhat degraded.

Hope this is not too confusing.

HH,
Glenn

 

[RandyNorthridgeca]

That clears it up for me.

Thanks for the reply Glenn.

HH Randy

 

[Chris(SoCenWI)]

n/t

 

[Dan-Pa.]

In reallity many use a gain of 5 to tell the depth of a target from the get go and only go after deep targets and ignore the shallow clad. Its call nodulated audio shallow loud, deep soft.Others elect 10 especially if your hearing is bad lest they miss a deep target as a setting of 10 makes that deep target louder.
Deep also allows you to hear the deepies better and hold the tone longer...trashy areas fast may also be used to help with masking but always a trade off as the tone is quicker due to the fast setting, but may allow you to get a nice target amongst the trash.
May sound confusing but comes with time in the field and perusing your manual..