Garmin GPS 500, Installation Manual

Page: 78 / 141

Page 5-26 500 SERIES INSTALLATION MANUAL
Rev Q 190-00181-02
3. Select " TER INHB " in the DISCRETE TOGGLE field on the MAIN DISCRETE I/O page of
the 500 Series unit.
x
Verify that, when the " TER INHB " discrete toggle is selected on the 500 Series unit, the
" TER INHB " box is filled in on the 500 Series unit and the white " TERR INHB " lamp is
illuminated on the external TAWS annunciator. If any other TAWS annunciators are
illuminated (either on the 500 Series unit or on the external TAWS annunciator), a fault
exists.
x
Select the " TER INHB " discrete toggle again and verify that the " TER INHB " box is NOT
filled in on the 500 Series unit and the white " TERR INHB " lamp is NOT illuminated on the
external TAWS annunciator. If any TAWS annunciators are illuminated (either on the 500
Series unit or on the external TAWS annunciator), a fault exists.
x
Verify that, when the " TERR INHB " switch is selected on the external TAWS annunciator,
the " TER INHB " box is filled in on the 500 Series unit and the white " TERR INHB " lamp is
illuminated on the external TAWS annunciator. If any other TAWS annunciators are
illuminated (either on the 500 Series unit or on the external TAWS annunciator), a fault
exists.
x
Select the " TERR INHB " switch again on the external TAWS annunciator and verify that the
" TER INHB " box is NOT filled in on the 500 Series unit and the white " TERR INHB " lamp
is NOT illuminated on the external TAWS annunciator. If any TAWS annunciators are
illuminated (either on the 500 Series unit or on the external TAWS annunciator unit), a fault
exists.
4. Select " TER N/A " in the DISCRETE TOGGLE field on the MAIN DISCRETE I/O page of
the 500 Series unit.
x
Verify that, when the " TER N/A " discrete toggle is selected on the 500 Series unit, the " TER
N/A " box is filled in on the 500 Series unit and the amber " TERR N/A " lamp is illuminated
on the external TAWS annunciator. If any other TAWS annunciators are illuminated (either
on the 500 Series unit or on the external TAWS annunciator), a fault exists.
x
Select the " TER N/A " discrete toggle again and verify that the " TER N/A " box is NOT filled
in on the 500 Series unit and the amber " TERR N/A " lamp is NOT illuminated on the
external TAWS annunciator. If any TAWS annunciators are illuminated (either on the 500
Series unit or on the external TAWS annunciator), a fault exists.
5. Select " TER WARN " in the DISCRETE TOGGLE field on the MAIN DISCRETE I/O page
of the 500 Series unit.
x
Verify that, when the " TER WARN " discrete toggle is selected on the 500 Series unit, the
" TER WARN " box is filled in on the 500 Series unit and the red " PULL UP " lamp is
illuminated on the external TAWS annunciator. If any other TAWS annunciators are
illuminated (either on the 500 Series unit or on the external TAWS annunciator), a fault
exists.
x
Select the " TER WARN " discrete toggle again and verify that the " TER WARN " box is
NOT filled in on the 500 Series unit and the red " PULL UP " lamp is NOT illuminated on the
external TAWS annunciator. If any TAWS annunciators are illuminated (either on the 500
Series unit or on the external TAWS annunciator), a fault exists.