Cable Preparation Receiving Sides; Grounding Instrument; Instrument Power Supply - JRC Alphatron Marine AlphaTurn Installation And Operation Manual

Rate of turn indicator (med)

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1.1.8.2 Cable Preparation Receiving Sides

1. Remove approx. 80 mm of the plastic cable sheath, including the grounding shield.

2. Wrap insulating tape over the cable end.

3. Attach the isolated cable end to the metal saddle on the rear of the instrument. See Figure 5: Cable Preparation

Receiving Cable Sides on page 14.

Figure 5: Cable Preparation Receiving Cable Sides

Note Always check the drawing for the correct shielding of signals.

To function properly, the AlphaLine instrument must be grounded to the ship's mass.

For this purpose the instrument has a grounding bolt. Connect the grounding bolt to the ship's mass with a low

impedance connection.

Figure 6: Grounding Bolt

Note The grounding strap must be as short as possible. If wire is used, use a minimum of 2.5 mm

See Figure 6: Grounding Bolt on page 14.

Note Always check the drawing for the correct shielding of signals.

The AlphaLine instrument has one 24 VDC (nominal) power input. Power consumption is approx. 500 mA. Connect to a

power supply > 1 A.

Note The power supply input is protected against connecting to the wrong polarity.

Note In rush current approximately 4 A.

14 | Installation Instructions

copper wire.

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