Vor/Ils Indicator (Gns 430 Only) - Garmin GNC 420A Installation Manual

4.8

VOR/ILS INDICATOR (GNS 430 ONLY)

4.8.1 VOR/ILS Indicator Function
Because the GNS 430 includes a "CDI" button that performs switching between GPS and
VOR/ILS on a remote indicator, it is seldom necessary to use these outputs to drive an
indicator. It is only necessary when it is desired for a separate indicator to display
VOR/ILS deviation full-time (regardless of the "CDI" button status).
The VOR/ILS indicator displays both lateral and vertical, To/From indications, lateral and vertical flags
and superflags. GNS 430 connector P4006 always outputs the VOR/Localizer/Glideslope navigation
information. The VOR/ILS pins on GNS 430 connector P4006 are used to drive an indicator that displays
VOR/ILS information at all times, regardless of the CDI selection on the GNS 430.
VOR/LOC COMPOSITE OUT is a standard VOR/Localizer Composite output signal which may be used
to drive the Left/Right, TO/FROM, and Flag indications of certain navigation indicators that contain an
internal converter.
The ILS ENERGIZE output goes low when the VLOC frequency is channeled to a localizer channel.
4.8.2 VOR/ILS Indicator Electrical Characteristics
4.8.2.1 Superflags
Pin Name
VOR/LOC SUPERFLAG
GLIDESLOPE SUPERFLAG
The Superflag outputs supplies not less than 500 mA on a 28 volt system and 250 mA on a 14 volt system
with the output voltage not less than (AIRCRAFT POWER - 3 V
VIEW. The output voltage with respect to ground is less than 3 V
4.8.2.2 Deviation
Pin Name
VOR/LOC +LEFT
VOR/LOC +RIGHT (VOR/LOC COMMON)
GLIDESLOPE +UP
GLIDESLOPE +DOWN/-FLAG (GLIDESLOPE
COMMON)
The Deviation outputs are each capable of driving up to three 1000
with respect to 2.5V Common for full-scale deflection. The drive circuit provides for more than full-scale
deflection with a maximum course deviation output voltage of ±300 mV
4.8.2.3 TO/FROM
Pin Name
VOR/LOC +TO
VOR/LOC +FROM (VOR/LOC COMMON)
The To/From outputs are capable of driving up to three 200
is +225 ±75 mV When indicating FROM, output is -225 ±75 mV
DC.
present (Flag IN VIEW) the TO/FROM output is 0 ±10 mV
Page 4-16
Rev Q
NOTE
Connector
P4006
P4006
) when the flag is to be OUT OF
DC
when the flag is to be IN VIEW.
DC
Connector
P4006
P4006
P4006
P4006
meter loads with 150 mV
DC
Connector
P4006
P4006
meter loads. When indicating TO, the output
When invalid information is
DC.
DC.
400 SERIES INSTALLATION MANUAL
Pin I/O
15 Out
38 Out
Pin I/O
5 Out
6 Out
32 Out
31 Out
10%
DC
10%.
Pin I/O
1 Out
2 Out
190-00140-02