Page 5-22
GTN 625/635/650 TSO Installation Manual
Rev. C
190-01004-02
5.2.16.2
VOR/ILS Indicator Electrical Characteristics
5.2.16.2.1 Superflags
Pin Name
Connector
Pin
I/O
VOR/LOC SUPERFLAG
P1004
15
Out
GLIDESLOPE SUPERFLAG
P1004
38
Out
The 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 less than 250
mVDC when the flag is to be IN VIEW.
5.2.16.2.2 Deviation
Pin Name
Connector
Pin
I/O
VOR/LOC +LEFT
P1004
5
Out
VOR/LOC +RIGHT
P1004
6
Out
GLIDUP
P1004
34
Out
GLIDDOWN
P1004
55
Out
The deviation output is capable of driving up to three 1000 loads with 150 mVDC 15 mVDC for full-
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.
5.2.16.2.3 TO/FROM
Pin Name
Connector
Pin
I/O
VOR/LOC +TO
P1004
1
Out
VOR/LOC +FROM
P1004
2
Out
The output is capable of driving up to three 200 meter loads. When indicating TO, the output is
+225 ±75 mVDC. When indicating FROM, output is -225 ±75 mVDC. When invalid information is
present (Flag IN VIEW) the TO/FROM output is 0 ±10 mVDC.
5.2.16.2.4 Flag
Pin Name
Connector
Pin
I/O
VOR/LOC +FLAG
P1004
3
Out
VOR/LOC -FLAG
P1004
4
Out
GLIDFLAG
P1004
32
Out
GLIDESLOPE -FLAG
P1004
53
Out
The Flag output is capable of driving up to three 1000 meter loads. When valid information is present
(Flag OUT OF VIEW) the Flag output is 375 ±80 mV DC. When invalid information is present (Flag IN
VIEW) the Flag output is 0 ±25 mV DC.
5.2.16.2.5 OBS
Pin Name
Connector
Pin
I/O
VOR OBS ROTOR C
P1004
9
Out
VOR OBS ROTOR H (GND)
P1004
10
--
VOR OBS STATOR D
P1004
13
In
VOR OBS STATOR E (GND)
P1004
11
--
VOR OBS STATOR F
P1004
12
In
VOR OBS STATOR G (GND)
P1004
14
--
VOR OBS ROTOR C and H are a buffered 400 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.