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Related Manuals for ADITEL KW948
Summary of Contents for ADITEL KW948
- Page 1 48 STEP PER DEGREE RETRANSMISSION UNIT KW948 AMI – GFV MARINE...
- Page 2 KW948 48 STEP RETRANSMISSION UNIT KW948 TECHNICAL MANUAL CONTENTS Contents page Data sheet Installation notes. Checking operation Layout. Schematics are not published in this document AMI-GFV MARINE LTD Parham Drive Eastleigh Southampton SO50 4NU Telephone 44 (0) 2380 480450 Fax 44 (0) 2380 480451 Email sales@amimarine.net...
- Page 3 Typical repeaters take no more than 0.8 amps per step, but the power required is less than expected from a simple ohms law calculation. The KW948 outputs the full voltage to rotate the repeaters, then, when in position it gives a rectangular pulse train to hold position at a low current.
- Page 4 The twisted pair cable screen should be grounded at the source, the gyro or its retransmission unit. Gyro compasses sometimes have a proprietary output, or come set to the wrong baud rate. If the KW948 does not respond to the gyro’s output then the gyro is not sending NMEA 0183 heading data.
- Page 5 Move heading and hold it. Check that all the repeaters have followed successfully. Do the exercise as fast as possible. The KW948 can not go out of synchronisation, and will follow up if the heading input moves faster than the output rotates.
- Page 6 ADJUSTING THE OUTPUT DRIVING POWER The following paragraphs explain how the KW948 may be adapted to suit different repeaters. To date the default values have never been changed. This is now coming to the more technical aspects of the interface. If the repeaters fail to follow on fast turns then perhaps they need to be driven harder, by forcing more current into the windings, and for longer.
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