Garmin GTR 225 Installation Manual

Also see for GNC 255: Pilot's guide

Contents

Garmin GTR 225 Installation Manual Manual pdf 49 page image

190-01182-02 GTR 225/GNC 255 TSO Installation ManualRev. B Page 5-115.2.8 VOR/ILS IndicatorVOR/ILS indicator displays both lateral and vertical, To/From indications, lateral and vertical flags andsuperflags. Connector P1004 always outputs the VOR/Localizer/Glideslope navigation information. TheVOR/ILS pins on P1004 are used to drive an indicator that displays VOR/ILS information at all times,regardless of the CDI selection on the GTR/GNC.VOR/LOC COMPOSITE OUT is a standard VOR/localizer composite output signal which may be used todrive Left/Right, To/From, and Flag indications of certain navigation indicators that contain an internalconverter.ILS ENERGIZE output becomes active (low) when VOR/LOC frequency is set to a localizer channel.5.2.8.1 VOR/ILS Indicator Electrical Characteristics5.2.8.1.1 SuperflagsThe output supplies not less than 320 mA with the output voltage not less than (AIRCRAFT POWER-2 VDC) when the flag is to be OUT OF VIEW. The output voltage with respect to ground is 0 +/-250mVDC when the flag is to be IN VIEW.5.2.8.1.2 DeviationDeviation outputs are each capable of driving up to three 1000 loads with 150 mVDC 15 mVDC forfull-scale deflection, 0 mVDC 4.5 mVDC when centered. The drive circuit provides for more than full-scale deflection with a maximum course deviation output voltage of ±300 mVDC 30 mVDC.5.2.8.1.3 TO/FROMTO/FROM output is capable of driving up to three 200 loads. When indicating TO, the output is+225 ±75 mVDC. When indicating FROM, output is -225 ±75 mVDC. When invalid information ispresent (Flag IN VIEW) the TO/FROM output is 0 ±10 mVDC.Pin Name Connector Pin I/OVOR/LOC SUPERFLAG* P2002 15 OutGLIDESLOPE SUPERFLAG* P2002 38 OutPin Name Connector Pin I/OVOR/LOC +LEFT P2002 5 OutVOR/LOC +RIGHT P2002 6 OutGLIDESLOPE +UP P2002 34 OutGLIDESLOPE +DOWN P2002 55 OutPin Name Connector Pin I/OVOR/LOC +TO P2002 1 OutVOR/LOC +FROM P2002 2 Out