External Noise And Interference Check - Furuno CI-68 Installation Manual

4.2.3 CIF Input/output sentences
Input sentences
Data No.
11
24、28
44、48
57
58
Priority
Information
Positioning data
Ship's speed bearing data
Output sentences
Data No.
56
66
76
4.3

External Noise and Interference Check

4.3.1 External noise check
Noise level can be measured (without transmission) at the [GENERAL] on the [TEST].
Preparation
1. Press the MENU key.
2. Press
3. Press
4. Press
[MENU 4].
5. Press
6. Press the F1 key. If the NL is –5 or more, the unit is receiving affects of interfer-
ence. In this case, check the following points.
• Grounding of the transducer unit
• Noise source around the transceiver unit
• Distance between the transducer cable and ship's power line.
Information
System Time
Positioning data (L/L)
Ship's speed bearing data
Depth data
Water temperature data
28>24
48>44
Information
Single-layered current data
Current indicator-measured speed/bearing
Multiple-layered current (by depth)
to move the cursor to the top of the screen.
several times to select [MENU 1].
to move the cursor on the sub menu items, and then press
several times to select [TEST], and press
Priority (No.)
to choose [GENERAL].
4. ADJUSTMENTS
Interval
3 s
3 s
15 s
to choose
4-9