Simrad RC25 - Table of Contents

Instruction Manual
20220653 / Rev. C 3
Contents
1 INTRODUCTION .........................................................5
2 COMPASS TYPES ........................................................6
2.1 Magnetic compass.................................................................................6
2.2 Fluxgate compass..................................................................................6
2.3 Rate compass (RC25, RC36, RC37).....................................................7
2.4 Rate Compass performance diagram ....................................................8
2.5 Gyro compass........................................................................................8
2.6 Compass type selection guide...............................................................9
3 DESCRIPTION OF MODELS .......................................10
3.1 RFC35 Fluxgate compass ...................................................................10
3.2 RFC35N NMEA Compass..................................................................11
3.3 RFC35NS Compass (RFC35N + SIN) ...............................................12
3.4 Rate compass (RC25, RC36, RC37)...................................................12
RC25 Rate compass ...................................................................12
RC36 Rate Compass...................................................................12
RC37 Rate Compass...................................................................13
Explanation to Rate Compass Block diagram............................13
3.5 Adding a SIN PCB to RFC35N Compass ..........................................15
Inserting the PCB .......................................................................15
Micro-controller chip .................................................................15
4 LOCATION AND INSTALLATION ...............................16
4.1 Inspection of mounting area................................................................16
4.2 Installation...........................................................................................16
4.3 Northerly / Southerly turning error.....................................................17
5 WIRING & CALIBRATION.........................................20
5.1 RFC35 Fluxgate Compass ..................................................................20
Connection to AP25 series, AP20 series and AP35 autopilots..20
5.2 RC25 Rate Compass (Robnet)............................................................21
Recommended connection for AP20/21/22, AP300X, AP35 and
AP50...........................................................................................21
Alternative connection to junction unit......................................22