Clicking noise coming from head unit

[mastergun]

Installed a new Helix 10 MEGA SI GPS G2N today. When it is on it makes a clicking noise at the head unit. Sometimes it is fast, sometimes slow and sometimes not at all. It doesn't happen in simulation mode or when the transducer is turned off in the settings.

I had a Helix 9 on there before and it didn't make the noise.

Thanks,

Robert

[Wayne P.]

That clicking is the sound pulses the unit makes that the 2D piezo in the transducer transmits.

The unit does not produce sound pulses in Simulator or with sonar turned off.

[granite]

I knew the transducer clicked. I never knew or noticed that the head unit does too.

[mastergun]

That clicking is the sound pulses the unit makes that the 2D piezo in the transducer transmits.

The unit does not produce sound pulses in Simulator or with sonar turned off.

I never noticed it on my Helix 9, but on this one it is quite loud.

[Wayne P.]

The Helix 10 MEGA DI+ GPS G3N's I have are like that.

They are especially loud if in Normal without the transducer connected.