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Step Up Transformer for X903-X

SKU: TRA-0003

Step Up Transformer for X903-X

Raises the phase voltage from 45VAC to 90VAC

The step-up transformer can be mounted in the existing X903-X enclosure and is connected with a ribbon cable makes installations a very simple task.

Simply plug-and-play with no configuration required. This makes it suitable for factory or retrofit installation.

The X903-X Series

The X903-X interface converts serial heading data from a modern gyro to a medium power synchro signal with ratios from 1:1 to 360:1. Applications include refitting a ship with a new gyro while retaining the existing repeaters. The majority of commercial gyro synchro systems are 360:1 or 1 revolution per degree; these are catered for by the X903-P high power model.

Heading Input is from an NMEA 0183 source, which most modern gyros give as standard.


The X903-X generates an adjustable synchro voltage of a maximum 54 volts. Therefore, ideal for Anschutz repeaters (20/24v), and several other manufacturers using nominal 50 volts.

The X903-X provides a smooth rotation, and it also interpolates the rotation to 2 decimal places of a degree. A smooth synchro rotation will be achieved from gyros that output heading to more than one decimal place of a degree.

If the gyro or interface can only provide heading output to 0.1 or 1/6th of a degree the rotation will move in steps of 0.1 or 1/6th of a degree. The SX software controls the rotation speed to reduce any oscillation on the synchro receiver.


The X903-X will detect a failure of the NMEA input signal, and overload of the synchro output.

Also, see the X903 Series

For your quotation please email sales@amimarine.com

By AMI Marine Limited

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Additional information

Weight2.3 kg
Dimensions31.00 × 25.00 × 26.00 cm
Item Measurements

310 x 70 x 40mm – 1.75kg

Packed Weights & Dimensions

31 x 25 x 26cm – 2.3kg

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