Garmin GNC 420A Installation Manual page 45

4.8.2.4 Flag
Pin Name
VOR/LOC +FLAG
VOR/LOC -FLAG (VOR/LOC COMMON)
GLIDESLOPE +FLAG
GLIDESLOPE +DOWN/-FLAG (GLIDESLOPE
COMMON)
The Flag output is capable of driving up to three 1000
(Flag OUT OF VIEW) the Flag output is 375 ±80 mV
VIEW) the Flag output is 0 ±25 mV
4.8.2.5 OBS
Pin Name
VOR OBS ROTOR C
VOR OBS ROTOR H (GROUND)
VOR OBS STATOR D
VOR OBS STATOR F
VOR OBS STATOR E/G (VOR/LOC
COMMON)
VOR OBS ROTOR C and H are a buffered 500 Hz output that is intended to drive the OBS rotors. VOR
OBS STATOR D and VOR OBS STATOR F are each phase and amplitude shifted version of the VOR
ROTOR C output. Each pair is intended to read one of the two windings of the indicator's OBS stator.
4.8.2.6 VOR/LOC COMPOSITE
Pin Name
VOR/LOC COMPOSITE OUT
With a Standard VOR Test Signal applied, VOR/LOC COMPOSITE OUT is 0.5 ±0.1 V
load. With a Standard Localizer Centering Test Signal applied, VOR/LOC COMPOSITE OUT is 0.350
±0.05 V into a 10 k load.
RMS
4.8.2.7 ILS ENERGIZE
Pin Name
ILS ENERGIZE
The driver output voltage is not more than 1.0 V when sinking 20 mA. The maximum off state leakage
current with respect to GND is less than 10 A.
4.8.3 VOR/ILS Indicator Configuration
Refer to section 5.2.13 for the VOR/LOC/GS configuration.
4.8.4 VOR/ILS Indicator Calibration and Checkout
Refer to section 5.2.13 for the VOR/LOC/GS checkout.
4.8.5 VOR/ILS Indicator Interconnect
Refer to Figure F-29 on page F-59 for the VOR/ILS indicator interconnect.
400 SERIES INSTALLATION MANUAL
190-00140-02
Connector
P4006
P4006
P4006
P4006
meter loads. When valid information is present
When invalid information is present (Flag IN
DC.
DC.
Connector
P4006
P4006
P4006
P4006
P4006
Connector
P4006
Connector
P4006
Pin I/O
3 Out
4 Out
30 Out
31 Out
Pin I/O
9 Out
10 Out
13 In
12 In
11 Out
Pin I/O
8 Out
into a 10 k
RMS
Pin I/O
29 Out
Page 4-17
Rev Q