[CA] [CA11] ITC 5 Zero Speed (SOW) data

[francisco]

I've installed a new Depth/ Speed/ Temp transducer with an ITC-5 converter with an I70s display.
I am experiencing problems to read speed. The display shows cero value (not dashes) so I understand that it recognize the transducer.
Depth and temperature are correctly read.
I tried unplugging and plugging ITC-5 during sailing and a speed reading appeared. It wasn't accurate. I assume this was because I didn´t synchronize with SOG.
On the next test, spead reading didn't appear.
I give you a description of all the instruments I have installed.
Autopilot ACU 200 with tiller Type100
Wind and Depth/ Speed/ Temp transducers with ITC-5
Seatalk1 to Seatalk NG converter
Autohelm Navcenter
MFD A97
RMK 10
I70s display
P70 display
Connection description.
D/S/T transducer connected to ITC-5
EV sensor connected to ITC-5 (via A06038,A06028,A06031,A06034)
Acu 200 connected to independent power and via A06039 to Seatalk1 to Seatalk NG converter.
Seatalk1 to Seatalk NG connected to 12v and via ST1 adaptor cable to Autohelm Navcenter.
To Seatalk1 to Seatalk NG connectors Backbone ports I connect 1 backbone cable from ITC-5 converter and 1 backbone cable that goes to stern where I have a 5 way connector to where I connect MFD A97, I70s and P70.
MFD A97 and RMK10 are connected via RayNet Network cable and have there own 12v supply.

Can you tell me what can I continue trying to solve the problem?
Best regards.