NorthStar Navigation 8000I - Manual (Page 3)

3 Northstar 8000i Black Box Processor
The electronic chart used by the Northstar 8000i is an aid to navigation designed to
supplement, not replace, official government charts. Only official government charts
supplemented by notices to mariners contain the information required for safe and prudent
navigation. Always supplement the electronic information provided by the Northstar 8000i
with other plotting sources such as observations, depth soundings, radar and hand compass
bearings. Should the information not agree, the discrepancy must be resolved before
proceeding any further.
Never operate the 8000i in Simulate Mode while you're underway.
It is the user's responsibility to ensure that Simulate Mode is used only in safe situations such
as when you are moored in a marina.
The accuracy of the sonar depth display can be limited by many factors, including the type of
transducer, the location of the transducer, and water conditions. Ensure that the transducer
is installed and used correctly.
The radar must be set up before it is used for the first time.
See "Set up the radar before using it" in the Radar Installation manual.
Radar scanners emit electromagnetic energy at a frequency that can be harmful at close
range. Always keep the recommended safe distance from the scanner as follows:
Scanner
Model Vertical beam
angle of scanner
(degrees) Minimum safe distance
(100 Watts per m² average
power density) Note 1 Minimum safe distance
(10 Watts per m² average
power density) Note 2
2 kW 30 1.6 ft (0.5 m) 4.6 ft (1.4 m)
4 kW 25 3 ft (0.9 m) 9.3 ft (2.8 m)
6 kW 20 3.6 ft (1.1 m) 11.5 ft (3.5 m)
10 kW 20 9.5 ft (2.9 m) 30 ft (9.0 m)
25 kW 20 18 ft (5.5 m) 57 ft (17.4 m)
NOTES: Limits apply to exposure within the vertical beam angle.
Note 1: Peak occupational exposure limit pursuant to IEC 60936 Clause 3.27 and IEC 62252
Clause 4.32
Note 2: General public exposure limit pursuant to IEC 60936 Clause 3.27 and IEC 62252
Clause 4.32