J
JordanBigel
Guest
How is this possible? This image shows two FI-70 instruments mounted side by side. The left one is configured to show the depth over time chart in blue (the boat is motionless) and the right side shows a page of various data, one of which is Depth (center/right).
http://www.bigel.net/download/FI-70-sid ... -depth.JPG
But they don't show the same depth - the instrument on the left shows 12.1 ft and the instrument on the right says the depth is 10.1 ft. (which is exactly 2ft apart, I am sure that is significant somehow).
Now, to make it more interesting, I also have a TZTouch2 in the system which I believe is supposed to be the master for all the FI-70s with respect to calibration, units, etc. However, this does not seem to be the case. It works if I set the units on the TZT2 (say, between Meters and Feet - the FI-70 correctly changes to those units). But the depth is different, and its different from both of the FI-70 screens I described above.
For example, on the TZT2 my external transducer draft is set to 2ft - the depth readout (DPT) on the TZT2 seems to show the transducer draft added to the depth shown on the FI-70 (chart page). So, for example, if the FI-70 chart page shows 12.1 ft, and the TZT2 transducer depth is set to 2 ft, then the TZT2 will show 14.1 ft of depth. The second FI-70 with the plain depth number still shows 10.1 ft. So, I basically have 3 different depth readings depending where I look... Changing the transducer draft on the TZT2 has NO effect on the FI-70 displays. Neither did it effect the depth displayed, of the delta (difference) between the chart page on the left instrument and the data page on the right instrument.
Will the real depth please stand up?
Is this normal?
Thanks,
Jordan.
http://www.bigel.net/download/FI-70-sid ... -depth.JPG
But they don't show the same depth - the instrument on the left shows 12.1 ft and the instrument on the right says the depth is 10.1 ft. (which is exactly 2ft apart, I am sure that is significant somehow).
Now, to make it more interesting, I also have a TZTouch2 in the system which I believe is supposed to be the master for all the FI-70s with respect to calibration, units, etc. However, this does not seem to be the case. It works if I set the units on the TZT2 (say, between Meters and Feet - the FI-70 correctly changes to those units). But the depth is different, and its different from both of the FI-70 screens I described above.
For example, on the TZT2 my external transducer draft is set to 2ft - the depth readout (DPT) on the TZT2 seems to show the transducer draft added to the depth shown on the FI-70 (chart page). So, for example, if the FI-70 chart page shows 12.1 ft, and the TZT2 transducer depth is set to 2 ft, then the TZT2 will show 14.1 ft of depth. The second FI-70 with the plain depth number still shows 10.1 ft. So, I basically have 3 different depth readings depending where I look... Changing the transducer draft on the TZT2 has NO effect on the FI-70 displays. Neither did it effect the depth displayed, of the delta (difference) between the chart page on the left instrument and the data page on the right instrument.
Will the real depth please stand up?
Is this normal?
Thanks,
Jordan.