Page 30 of 48
Date: 2021-12-10
Date: 20121-10-10
Page 31 of 48
InMan DL1-Multi Single Axis Doppler Speed Log System
InMan DL1-Multi Single Axis Doppler Speed Log System
Electronics AS
Electronics AS
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The user can run an internal system test, run individual hardware tests and report as pass or fail.
The tests are designed to check the functionality of the input and output. Some require a loop from
an input to an output.
Test 0: Check LEDs on CD401CU-XX control unit.
Test 1: Check internal memory.
Test 2: Check two way communication to the sensor.
Test 3: Send out a full length NMEA message on NMEA outputs.
Test 4 Send out a full length NMEA message on sensor outputs.
Test 5: Used only for manufacture test
Test 6: Used only for manufacture test
Test 7: Used only for manufacture test
Test 8: Used only for manufacture test
Test 9: Used only for manufacture test.
Test 10: Show Raw data from the sensor, and Quality factor
Quality factor is a value from 0 to 8 showing how strong the signal is relative to the noise. If the
installation is poor, the noise may rise reducing this number, also if the return signal is weak, this value
will also be low. Each unit is 3dB signal to noise ratio. The system is suspect with values below 3. .
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Once all parts are installed, the system can be made to run simulations of real situations. These are
found in the demo setup.
The system has 4 demos:
Demo 1:
Slowly ramps a speed up and down. This allows the user to monitor
speed outputs, to set and trigger alarm (which can then be reset).
Demo 2:
Fixes a speed on screen. This can be preset in the web page.
Demo 3:
Transmits a fixed speed of longitudinal 5 kn and transversal 1 kn.
Demo 4:
Simulates a speed on the sensor by pinging at the equivalent Doppler
frequency - select the desired speed and press “SET”.
All these demo/simulations will cause an ‘S’ to flash in the corner of the
CD401CU-XX control unit.
