A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
Title
Size
Document Number
Rev
Create:
Sheet of
Category
Mod:
Tuesday, April 28, 1998
82005-10
C2
NAV-1 / ARINC-429 GPS (EXT RELAY)
Vista, Ca.
B
22
29
SN3500 INSTALLATION DRAWING
Sunday, December 09, 2007
Title
Size
Document Number
Rev
Create:
Sheet of
Category
Mod:
Tuesday, April 28, 1998
82005-10
C2
NAV-1 / ARINC-429 GPS (EXT RELAY)
Vista, Ca.
B
22
29
SN3500 INSTALLATION DRAWING
Sunday, December 09, 2007
Title
Size
Document Number
Rev
Create:
Sheet of
Category
Mod:
Tuesday, April 28, 1998
82005-10
C2
NAV-1 / ARINC-429 GPS (EXT RELAY)
Vista, Ca.
B
22
29
SN3500 INSTALLATION DRAWING
Sunday, December 09, 2007
GPS SELECTED
4
ACFT PWR
ARM SELECT
APPR ARM OUT
OBS CMND OUT
LEG/OBS- CTRL
NAV-1 AND ARINC 429 GPS INTERCONNECT.
KLN90-B SHOWN FOR REFERENCE
GPS1 RELAY
7
15 GPS2 RELAY
MASTER MODE
SLAVE MODE
GPS ENABLED FROM
SWITCH/ANNUNCIATOR UNIT.
(SLAVE MODE ONLY)
429-1 TX-A
1
N/C
LAT +LEFT
VERT -FLAG
+DOWN
H
TO VHF NAV
RECEIVER
RESOLVER
INTERCONNECT
OBS RESOLVER E/F (VREF) (IN)
TO AUTOPILOT
OBS RESOLVER COS OUT
GPS/LORAN RECEIVER.
KLN-90B SHOWN FOR
REFERENCE
LAT -FLAG
OBS RESOLVER H (IN)
2
!
LAT +RIG
HT
LAT -FLAG
F
E
APPR ACTIVE
SEE NOTE 2
ILS ENERGIZE
P2
GPS DISPLAYED
429-1 RX-B
NOTE 7
VERT +UP
CO
MPO
S
IT
E
ARINC 429 RX-B
10
NOTE 1
VERT +DOWN
+UP
ARINC 429 TX-B
VERT +FLAG
+FLAG
D
SN3500
16
OBS RESOLVER SIN OUT
ARINC 429 RX-A
LAT +RIG
HT
429-1 TX-B
+TO
ARINC 429 TX-A
+FROM
-VERT FLAG
G
P901
FROM VHF NAV RECEIVER
LAT +FLAG
+VERT FLAG
GPS SWITCHING RELAY CONNECTIONS (SEE NOTE 3)
CONNECT P3-4 OR P3-7 BUT NOT BOTH.
LRN APPR IN
14
P1
44 LRN APPR ARM IN
APPR ACTIVE 16
17
NOTE 6
ARINC 429 RX-A
ARINC 429 RX-B
JUMPERS REQUIRED IF NO
AIRDATA COMPUTER
INSTALLED.
A
INITIAL RELEASE
DATE
REV
COMMENTS
C
RELAY SENSE NOTE 8
4
GPS1 SENSE
COMPUTER CONTROLLED DRAWING
DO NOT REVISE MANUALLY
6
9
22
8
+TO
37
7
38
24
23
+FROM
36
18
3
8
23
37
38
Nav + Right
Nav + Left
Nav + Flag
Nav - Flag
GS - Flag
GS + Flag
GS + Up
GS + Down
Composite 1 In
APPR ARM
VERT +FLAG
VERT -FLAG
VERT +UP
VERT +DOWN
LAT +FLAG
LAT -FLAG
LAT +RIGHT
LAT +LEFT
19
25
25
22
IN SLAVE MODE THE
RELAY DRIVE IS PART
OF THE EXTERNAL
SWITCH/ANNUNCIATOR
UNIT
ILS1 ENERGIZE
ILS ENERGIZE
KLN90-B SHOWN
SEE NOTE 5
LAT +LEFT
P1
P2
P3
30
33
429-1 RX-A
5
4
30
15
31
17
9
8
24
23
A1
A/R 780 MINOR DOC CHANGES
C
A/R 806 429 TX OUT PIN CORRECTIONS,
P1-22 AND P1-7 REVERSED.
3
SDI - 1/2
SEE NOTE 9
NOTES:
1. CONNECT OBS "H" FROM RECEIVER "H" or "C" WHICHEVER IS THE ACTIVE OUTPUT.
CHECK APPROPRIATE NAV RECEIVER SCHEMATICS. CONNECT "SIN OUT" and "COS
OUT" TO THE ACTIVE RETURN PINS, USUALLY D/F. CONNECT "OBS VREF" TO EITHER
STATOR RETURN PIN (REF OR GROUND) USUALLY E or G. THE LOAD RESISTOR
SIMULATES A SYNCHRO.
2. THE APPROACH ACTIVE OUTPUT FROM THE GPS TO THE AUTOPILOT MAY HAVE TO
BE AN ADDITIONAL RELAY. SEE THE MANUFACTURERS INSTALLATION DIAGRAMS.
3. THE PREFERRED INSTALLATION IS THE SN3500 P3-7 CONTROLLING AN EXTERNAL
SWITCHING RELAY. IF AN EXISTING SWITCH CONTROL BOX IS INSTALLED AND IT IS
DESIRED TO LEAVE IT OPERATIONAL, USE P3-4 TO SENSE GPS MODE AND SELECT
SLAVE FOR THE MODE SETTING ON THE OBS/RELAY/CDI MAINTENANCE PAGE.
MASTER:
SN3500 CONTROLS THE NAV/GPS
SWITCHING (PREFERRED)
SLAVE:
EXTERNAL NAV/GPS SWITCH CONTROLS
THE SN3500
4. CHECK MANUFACTURERS DOCUMENTATION FOR ANY ADDITIONAL INSTALLATION
SPECIFIC RELAY POLES WHICH MAY ALSO BE NEEDED.
5. KLN-90B PINOUTS SHOWN. CERTAIN CONNECTIONS SUCH AS GPS_DISPLAYED,
SDI-1/2, AND OBS/LEG ARE SPECIFIC TO KLN-90B.
6. MSG AND WPT ANNUNCIATORS ARE COMMUNICATED ON THE ARINC 429 SERIAL
CHANNEL.
7. FOR 3V COMPOSITE NAV SOURCES INSERT A 470K SERIES RESISTOR LOCATED AT
THE SN3500 CONNECTOR. NOT REQUIRED FOR .5V SOURCE.
8. ONLY USED WHEN SN3500 IS IN MASTER MODE. SELECT GPS1 FOR SENSE ON
OBS/RELAY/CDI MAINTENANCE PAGE.
9. IF KLN90B IS USED FOR GPS1, LEAVE SDI-1/2 PIN 3 OF KLN90B OPEN. IF KLN90B IS
WIRED FOR GPS2, THEN CONNECT SDI-1/2 PIN 3 OF KLN90B TO GROUND.
ADDED KLN90B SDI-1/2 CONNECTION. ADDED
NOTE 9 AND MODIFIED NOTE 5 TO INCLUDE
SDI-1/2.
C2
470K
470K
1N4004
1N4004
220 O
hm
220 O
hm
K1
K1
Summary of Contents for SN3500
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