Furuno FEA-2107, Руководство по установке

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2. WIRING
2-19
2.5 Radar Overlay
(EC-1000C-R/EC-1000C-CR only)
Radar Overlay has input for one set of radar signals. Radar Overlay can be used to read
the picture from three different radar transceivers, because it has two status inputs which
change the following characteristics of the Radar Overlay:
•
Video gain operating area (low and high voltage)
•
FTC adjust operating area (low and high voltage)
•
STC adjust operating area (low and high voltage)
•
STC curve length and shape
•
Number of azimuth pulses per 360º
•
Radar antenna headline detector offset
•
Radar trigger range offset
•
Offset of the radar antenna from the conning position
Following characteristics of the Radar Overlay are common for all radar transceivers:
•
Video polarity (positive or negative) and impedance (hi-Z or 75
Ω
)
•
Trigger active edge (positive or negative) and impedance (hi-Z or 75
Ω
)
•
Headline polarity (positive or negative)
•
HI and LO video detection level difference
If you want to utilize multiple radar transceivers, then you must have a radar interswitch
outside the ECDIS. The inter switch reports to the radar transceiver currently in use to the
status inputs of Radar Overlay.
To connect the Radar Overlay (in the processor unit) to the radar, use the cable NH8P
―
DSUB15BNC cable (option). Note that XH8P-NH8P cable is necessary when the optional
radar switch is used.