Sailor UAIS1900 Technical Manual Download Page 81

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UAIS DEBEG 3400, Electronics Unit

ED3047G142 / 08 (2004-06)

Technical Manual

9 Cabling Documents

t_ue_e11.fm / 21.06.04

Cabling Documents

Grounding

All components of the radar system have contacts such as bolts or terminals for grounding. Grounding is
important for EMC purposes as well as for protecting people’s lives.

Both purposes are covered by the standard grounding of the system’s housings to the ship’s metallic
structure (bolted or welded). Regardless of the type of ship’s grounding (e.g. star pattern or ground plane
pattern), no potential difference should be measurable between two different ground connectors. Potential
differences cause compensation currents on the cable shields. If the ship has no metallic structure, all
conductively connected metallic parts form an artificial ground.

All ground connections should be as short as possible. If possible, different units should be connected to
individual ground connectors. Whenever possible, metallic housings should be screwed or welded directly
to the ship’s metallic structure. If a safe grounding contact is not ensured, additional conductors are
necessary. Furthermore, all ground connections should have a low RF-impedance, and should be
resistant against vibration and corrosion. Grounding conductors on an open-air deck must be made of
corrosion-protected steel, and inside the ship they must be made of copper.

The grounding should be done in such a way that the connection can be inspected in a convenient
manner.

EMC Purposes

The shields of all cables must be connected at both ends if no other instructions are given.

Protective Ground

All removable metallic parts of the housings are grounded by means of separate, flexible cables to the
main structure of the housing. It is important to connect this ground-cable after parts have been
dismounted or exchanged.

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C a b l e D i a g r a m 1 / 6 , c o n n e c t i o n t o D C U D E B E G 3 4 0 1 v i a P r i m a r y D i s p l a y P o r t

C a b l e D i a g r a m 2 / 6 , c o n n e c t i o n t o R A D A R P I L O T 1 0 0 0 / N A C O S x x - 4 v i a P r i m a r y D i s p l a y P o r t

C a b l e D i a g r a m 3 / 6 , c o n n e c t i o n t o C H A R T P I L O T, N A C O S - x x 4 , R A D A R / M U LT I P I L O T 1 0 0 0 v i a L A N

C a b l e D i a g r a m 4 / 6 , c o n n e c t i o n t o C H A R T P I L O T s t a n d - a l o n e

C a b l e D i a g r a m 5 / 6 , c o n n e c t i o n t o R a d a r 9 x x x v i a R a d a r 9 x x x A I S I n t e r f a c e ( N A C O S x x - 3 )

C a b l e D i a g r a m 6 / 6 , c o n n e c t i o n t o D C U D E B E G 3 4 0 1 a n d G y r o C o n v e r t e r D E B E G 4 9 0 1

C o n n e c t i o n D i a g r a m 1 / 1 0 , c o n n e c t i o n t o D C U D E G E G 3 4 0 1

C o n n e c t i o n D i a g r a m 2 / 1 0 , D C U c o n n e c t o r s ( a l a r m i n p u t , P r i m a r y D i s p l a y P o r t , p o w e r s u p p l y )

C o n n e c t i o n D i a g r a m 3 / 1 0 , c o n n e c t i o n t o N A C O S x x - 4 , R A D A R / M U LT I P I L O T 1 0 0 0 v i a P r i m . D i s p l . P o r t

C o n n e c t i o n D i a g r a m 4 / 1 0 , t e r m i n a l s a t t h e A n a l o g I n t e r f a c e

C o n n e c t i o n D i a g r a m 5 / 1 0 , c o n n e c t i o n t o C H A R T P I L O T, N A C O S , R A D A R / M U LT I P I L O T 1 0 0 0 v i a L A N

C o n n e c t i o n D i a g r a m 6 / 1 0 , c o n n e c t i o n t o C H A R T P I L O T s t a n d - a l o n e s y s t e m s

C o n n e c t i o n D i a g r a m 7 / 1 0 , c o n n e c t i o n t o R a d a r 9 x x x v i a R a d a r 9 x x x A I S I n t e r f a c e ( N A C O S x x - 3 )

C o n n e c t i o n D i a g r a m 8 / 1 0 , t e r m i n a l s a t t h e G y r o C o n v e r t e r U n i t D E B E G 4 9 0 1

C o n n e c t i o n D i a g r a m 9 / 1 0 , c o n n e c t i o n t o D C U D E B E G 3 4 0 1 a n d G y r o C o n v e r t e r U n i t D E B E G 4 9 0 1

C a b l e D i a g r a m 1 / 1 , A n t e n n a c a b l e s l o n g e r t h a n 4 0 m