●0.08 μ S, 2100 Hz (0.125, 0.25, 0.5, 0.75, 1.5nm)
●0.3 μ S, 1200 Hz (1.5, 2, 3nm)
●0.8 μ S, 600 Hz (3, 4, 6, 8, 12, 16, 24, 36nm)
●
Warm up time: 1:30 minutes
●
Modulator: FET switching method
●
I.F.: 60MHz
●
Tuning: Automatic or manual
●
Receiver front end: MIC (Microwave IC)
●
Bandwidth:
●Tx pulselength 0.3 μ S and 0.08 μ S: 25MHz
●Tx pulselength 0.8 μ S: 3MHz
●
Duplexer: Circulator with diode limiter
ETHERNET CABLE
●
Ethernet cable with RJ45 connector
POWER SUPPLY UNIT
●
From 10.5 Vdc to 40 Vdc built-in regulated power supply
ENVIRONMENT
●
Temperature:
Antenna unit; -25°C to +70°C
●
Humidity:
Relative humidity 93% or less at +40°C
●
Compass safe distance:
Standard Compass
Steering Compass
Antenna unit
130cm
95cm
3. Installation
This chapter provides the procedures necessary for installation. Installation mainly consists of the
following:
• sitting and mounting the display unit and antenna unit
• connection of the signal cable and the power cable
• establishing the ground
• checking the installation, and
• adjustments.
3.1 Antenna Unit Installation Sitting, handling considerations
• The antenna unit is generally installed either on top of the wheelhouse or on the radar mast on a
suitable platform. Locate the antenna unit where there is a good all-round view as far as possible,
no part of the ship’s superstructure or rigging intercepting the scanning beam. Any obstruction will
cause shadow and blind sectors. A mast for instance, with a diameter considerably less than the
width of the radiator, will cause only a small blind sector, but a horizontal spreader or crosstrees in
the same horizontal plane as the antenna unit would be a much more serious obstruction; you would
need to place the antenna unit well above or below it.
• It is rarely possible to place the antenna unit where a completely clear view in all direction is
available. Thus, you should determine the angular width and relative bearing of any shadow sectors
