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Note! Simrad AS makes every effort to ensure that the information contained within this document is correct. However, our equipment is continuously being improved and updated, so we cannot assume liability for any errors which may occur. Warning! The equipment to which this manual applies must only be used for the purpose for which it was designed.
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INSTALLATION MANUAL Installation Manual GI51 Gyro Interface This manual is to be used when installing the Simrad GI51 Gyro Interface. 20221594 / B Busse-Yachtshop.de info@busse-yachtshop.de...
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Simrad GI51 Gyro Interface Document revisions Date Written by Checked by Approved by 18.02.04 30.04.04 Document history Rev. A First issue Rev. B Updated to include new functions. Corrections/updates added to other pages . To assist us in making improvements to this manual, we would welcome comments and constructive criticism.
INSTALLATION MANUAL INTRODUCTION The GI51 is a multi purpose interface unit designed for converting various input signals to Robnet, sin/cos, stepper signal, NMEA 0183, and Clock Data output signals. Refer TECHNICAL SPECIFICATIONS, page 20. The GI51 may be used both in a Robnet system and as a stand- alone unit.
INSTALLATION MANUAL 2.3 Dip switch settings The following dip-switches have to be set correctly: - SW1-1 and SW1-2 determine the gearing ratio for synchro input. For 1:1 synchro or if synchro is not used, both are set to OFF - SW1-3 determines the format of the clk/data heading signal to the radar.
Simrad GI51 Gyro Interface 2.4 Interface setup procedure When a compass is connected to the GI51 via Robnet, it is required to configure the compass in the autopilot Interface Setup Menu. Note! For AP50 the gyro type has to be selected under the “GI-menu”...
INSTALLATION MANUAL 2.6 Calibration For other types of synchro voltages, it is recommended to perform a heading calibration to obtain the maximum heading accuracy. Calibration can be performed by either turning the vessel, slew the compass or rotating the synchro. As the internal gain is related to synchro voltage, dip switch SW2-2 is used to select “high reference voltage”...
Simrad GI51 Gyro Interface 2.7 Initial heading and heading change test This section describes how to verify that the heading read-out from the GI51 is following the correct direction of change along with the gyro. In some cases, it may be encountered that the autopilot heading read-out is different from the gyro heading.
INSTALLATION MANUAL If only a constant small error should occur, loosen the fixing screws for the synchro transmitter and adjust by moving the synchro transmitter for correct heading output from the GI51. 2.8 S9 Steering lever The S9 Steering Lever can be added to an autopilot system to provide remote non-follow up steering capability.
Simrad GI51 Gyro Interface GI51 PCB 3.1 Component location SEL.4 SEL.3 SEL.2 SEL.1 RADAR +12V Clk L SYNCHRO Clk H FAULT Data L SPEED LOG Data H (PULSE) Pulse +12V RGC RX NMEA NMEA PROGRAM / FUNCTION KEY Step 3...
INSTALLATION MANUAL 3.2 Terminal description TB1, Power Used for power connection when GI51 is not powered by Robnet. When power is connected to TB1 in a Robnet system, GI51 will continue to output gyro heading even if the autopilot is turned OFF.
Simrad GI51 Gyro Interface TB6, Step In Step 3 Used when connecting a gyro compass with stepper output. Step 2 Step 1 TB7 and TB8, NMEA NMEA signals from compass or speed log with serial output should be connected to RX- and RX+. Refer Dip switch settings for speed, page 7.
INSTALLATION MANUAL TB12, Selector The selector lines option on TB12 are used both for heading SEL.4 offset adjustment and for the optional pendulum function key as SEL.3 described below. SEL.2 SEL.1 Offset heading adjustment +12V Offset of initial heading will be required when a step or geared synchro is connected in a stand-alone system.
Simrad GI51 Gyro Interface PENDULUM FUNCTION KEY (Option) If GI51 not is connected to Robnet, an optional Pendulum function key (part no. 20213815) has to be installed to activate the pendulum function. When this key is installed, GI51 will change the heading output by 180° based on signal from a potential free closing contact between TB12, Sel 4 and +12V on the GI51 pcb.
INSTALLATION MANUAL TROUBLE SHOOTING For location of the LEDs, refer to Component location, page 12. SYMPTOM CORRECTIVE ACTION The unit is 1. Check that the POWER OK LED inoperative. is lit. 2. Check that the CPU RUNNING LED is alternating at 1Hz. No compass output.
Simrad GI51 Gyro Interface SYMPTOM CORRECTIVE ACTION No speed output 1. Check LED indicator for Speed Log input or NMEA RX (depending upon which signal that is selected by DIP switch SW2.1). 2. Check LED for NMEA input. 3. If input signal is missing, check cabling or status of speed log.
Simrad GI51 Gyro Interface Other serial output/input Input data: Calibration start command: $PSTOC<CR><LF> Heading offset adjust: $PSTOK,,,nnn.n,<CR><LF> nnn.n=offset angle 0 – 360 Output data: Status: $PSTOC,R<CR><LF> equal to calibration running $PSTOK,C<CR><LF> equal to calibration completed, or not running (as presented before start calibration) $PSTOK,F<CR><LF>...
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Sales and service worldwide 01.03.04 EUROPE (Recreational) NORWAY SWEDEN Oy Maritim Ab Simrad Marine AS Simrad AB Veneentekijäntie 1 Joh. Berentsensvei 109 Svalörtsgatan 14 AUSTRIA SF 00210 Helsinki P.O. Box 53, Laksevåg 42668 Västra Frölunda Allroundmarin-Alltechnik Tel: +358 9 681 631 N-5847 Bergen Tel.: +46 31 69 51 00 GesmbH...
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Sales and service worldwide 01.03.04 AMERICAS UNITED ARAB INDIA URUGUAY EMIRATES Norinco Pvt Ltd. Electromaritima Uruguaya Emphor FXCO Karshaka Road CANADA Ltda. P. O. Box 6488 Cochin 682016 Simrad Canada Ltd. Guatemala 1260 Dubai Tel.: +91 484 2323 675 P.O. Box 397 11800 Montevideo Tel.: +971 4 324 7500 Fax: +91 484 2323 694...
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