Simrad CR44, Руководство пользователя

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CR44/54 Radar menu Chapter 3-11
in
Power off
mode until you have selected the correct scanner type
– toggle through available types with the +/- keys, but…be careful
not to select the wrong type of Scanner, as this may cause a system
failure.
Demo mode – see section 3.3.
Antenna height:
enter the actual height above water of the radar
antenna/scanner.
Heading adjust: Orientation should be HU (Head-Up). Turn the
ship, so a target becomes visible in the front and adjust until target
is straight ahead on the heading line. Use the +/- keys to position it
correctly.
Tuning reference:
Normally there should be no need to adjust the
Tuning reference. However, if sensitivity is poor or there are any
symptoms at all suggesting improper tuning, you may need to make
an adjustment: Choose a displayed range of 3nm or higher. Use
cursor to go to the Tuning reference value. Use +/- keys to adjust the
value in single steps (allowing 3-4 revolutions) until weak echoes in
the distance becomes acceptable.
Zero range/timing:
Most common settings are between 105 and
115. Default setting depend on which scanner type is connected.
To adjust: Press the [1] key to set the displayed range to 0.125nm.
Use cursor to highlight “Sea” and with +/- keys set the sea clutter to
zero, so you can see the transmitting pulse. Now adjust the value for
Zero range so the ring around the ship is just closing.
If you have knowledge of the distance to a nearby object, say a mast
or a buoy, you can verify if the Zero range is set correctly by meas-
uring the distance. To do so, place the VRM ring on top of the object
and check the readout in the control panel (follow procedure in sec.
3.2.5). If the readout is not the same as the known distance, adjust
the value in Zero range with 1 figure up/down for every 3 meter
adjustment.
Sensitivity:
is preset to 048. Adjust value if echoes are not reason-
able clear i.e. the higher the value, the less detailed presentation of
echoes.
GZ target threshold:
is preset to 5. Objects are identified according
to weak/strong signals. 1= weakest, 7= strongest.