[CA] [CA11] Wind Speed Errors

[SVSunDog]

Good Morning,

This past spring I installed the following:
EV-100 AP
Axiom 7 CP
i70S x 2 MFDs
iTC-5 Transducer Converter
R28170 Wind Transducer.
ST-800 Speed & Temp Transducer
I use the original ST50 depth transducer

All connected by SeaTalkng with the power being supplied to the network via the iTC-5 spur connection and a power spur cable.

I love the system, especially the feature of having the AP steer by AWA.

My problem (all winds speeds are AWS):
In winds <10 knots the wind speed appears to be correct.
Above 10 knots the wind speed appears to max out around 12 knots. It does not show higher winds or gusts.

I tried setting the wind speed adjustment using by using the speed readings from a hand held wind instrument when we were seeing a steady 18 knots.
After that change at < 10 knots, the speed readings were in the teens.
It almost appears that the speed transducer has a max range of 10 knots.

Yesterday when I arrived at the boat I had --- for both the depth and wind speeds. After checking the fuses and turning power off and on the depth started working correctly but the wind speed showed 0 and the wind angle showed 0.
Interestingly, at times the GWD display will switch to the correct wind direction for less than a second, then back to being about 180 degrees off.

I checked the voltages at the iTC-5 and at the connection box at the bottom of the mast. Both locations had the same voltages shown below:

Red to Shield - 8.4V
Blue to Shield - 7.6V (I believe this should be between 2V and 5.8V)
Green to Shield - 5.9V
Yellow to Shield - 3.0V

STW and TWS do work and match when underway, as expected.

Please advise what if any further testing I should do to determine if the issue is in the iTC-5 or in the wind transducer.

Attached are two photos of the wind display showing the two GWDs it reports while the wind angle pointer does not change.

Thanks
Ward