Sandel ST3400H HeliTAWS, Installation Manual

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4
3 2
REVISIONS
LTR DESCRIPTION
DATE
TITLE
SIZE
DWG NO.
SCALE SHEET
REV
A
B
C
D
1 3 4
D
C
B
A
1
NONE
A
2401 DOGWOOD WAY
VISTA, CA 92081 USA
CAGE CODE
2
Initial Release
ST3400H INSTALLATION DRAWING
AVIONICS POWER BUS
P2
AIRCRAFT POWER
AIRCRAFT GROUND
1/9
3/11
HTAWS
3A
UNSWITCHED AUDIO IN
HTAWS PWR
P2-8 (TCAS INH)
AUDIO PANEL
TCAS AUDIO
04/12/2010
MOD
2 OF 15
COMPUTER CONTROLLED DRAWING
DO NOT REVISE MANUALLY
9 500 OHM AUDIO OUT
P3
AUDIO OUTPUT COMMON
5
AUDIO MIXER
NAT AA35-100
J101
UNSWITCHED AUDIO IN
AUDIO PANEL
5
24
HI
LO
CH 2 IN
18 HI
37 LO
SHLD 19
COMP OUT
8
3
6
500 OHM 25mW STRAP
500 OHM 150mW STRAP
STRAPPING COMMON
P3
5 AUDIO OUTPUT COMMON
9
P2
5
AUDIO OUTPUT COMMON
8 OHM AUDIO OUT
4
A1 Title Block Format Change. AR1189 07/30/2011
B
Added P2-9 as a power pin. Added P2-11 as a ground
pin. AR1418
12/12/2013
D
REDRAWN (AR1477) – Was Sheet 1
Added Wire Numbers (various)
Removed “POWER” by CB, changed Note 1, added
shield ground, and twisted pair (Zone D-3)
Separated Speaker Interface (Zone C-4)
Removed note and added reference to note 2. (Zone B-3)
Changed and revised Note 2 (Zone B-1/2)
Added Interconnection to audio mixer and strapping
(Zone A-3)
Changed Note 3 To Note 4 (Zone A-4) for strapping
Added New Note 3 (Zone A-3)
Note 4 (Zone A-1) is now the strapping note. Ref (Zones
B-4 & A-4)
03/31/2015
2
3
4
CATEGORY
POWER & AUDIO
ST1A20
1
ST8A22
ST8A22
ST8B22
HI
LO
HI
LO
P
ST8A22
500 OHM AUDIO OUT
2
8
3
6
500 OHM 25mW STRAP
500 OHM 150mW STRAP
STRAPPING COMMON
4
C 08/25/2014
AR1416 Typos corrected
1
NOTES:
USE 20AWG SHIELDED WIRE
IF THE AIRCRAFT AUDIO SYSTEM DOES NOT HAVE A SPARE UNSWITCHED
INPUT, AND THE OTHER AUDIO SIGNALS ARE OF THE SAME PRIORITY, ADD A
470-680 OHM RESISTER IN SERIES WITH EACH SOURCE FOR ISOLATION OR
USE A RELAY.
IF THE AIRCRAFT AUDIO SYSTEM DOES NOT HAVE A SPARE UNSWITCHED
INPUT, AND THE OTHER AUDIO SIGNALS ARE OF HIGHER OR DIFFERENT
PRIORITY (I.E. LOW ROTOR RPM) USE AN AUDIO MIXER THAT PROVIDES
ADJUSTMENT FOR EACH AUDIO IN ORDER TO ELIMINATE MASKING OF HIGHER
PRIORITY WARNING SIGNALS
WHEN USING THE 500 OHM STRAP USE 25mW OR 500mW PINS TO STRAPPING
BUT NOT BOTH
2
3
4