HD-MAX Echo Sounder User Guide
61
Select antenna type and input antenna height value. Choose type, high
antenna measuring position and radius of the antenna and the phase shift
according to different instrument model has a fixed value, if it is a custom,
users need to input. After the setup is completed, click [Application].
(3) Calculate antenna height automatic:
Select [Calculate By Calculation]
to enter calculation interface:
Figure 8-5 Antenna height calculation
Input current water level elevation. Click [Start]. The antenna height will be
calculated automatically through smooth acquisition of ten times of effective
GPS antenna height. Click [Apply] and apply the currently calculated
antenna height to software.
(It is a frequently-used method to obtain
antenna height on oceanographic instrumentation. First of all, measure the
water level elevation when the water surface is calm; secondly, try to keep
the surface elevation and GPS acquisition time in synchronization without
great time interval.)
Communication test
Click [Test Start] and the serial port will be opened to receive and parse data.
The text box will display the received data and show the comprehensive
assessment of test results at lower right. There are three statuses of
[Conclusion]:
（
1
）
No data: Serial port has not received any data.
（
2
）
Normal data: Correct serial port setting. Moreover, the selected
instrument type matches the connected GPS devices.
（
3
）
Abnormal data: Data received at the serial port. However, it can not
perform data acquisition. The possible reason is that:
①
The baud rate is not
correct.
②
The selected instrument type is not matching with the connected
GPS devices.
③
Date information not output
