ACCESS/A A711 L-Series Installation & Operating Instructions 09RE416
Technisonic Industries ltd. Copyright 1996, 1997, 2010, 2011 BY TiL ALL RIGHTS RESERVED Page 2-19
Bottom Connector J102 DA15P
Mating
Cable Connector:
DA15S
(15 Pin Female)
J102
Connector Pin Assignments
Alerting Connector
Low
High
Connection
Notes
9
1
Alert Audio Input (Internal Jumper
Selection)
Alternate alerting input (disables
tone system if jumper selected)
2
PA Key Output (Active Low)
To External PA system
11
3
PA Mic Out
To External PA System
4
Siren Key 1 Output (Active Low)
Optional Function
5
PA LED Hi Input (Level Indicator)
Optional Function
6
Day/Night Annunciator Control
(12/24VDC input)
IMPORTANT, see NOTES!
Forces TX annunciators to day or
night level. If NOT used, this line
MUST be connected to J101, Pin
17 (28VDC power input), or TX
annunciators will NOT light.
7
+28VDC In
Alert Power (may come from
existing alert breaker)
8
Ground (Power)
Power ground return
connection.
10
PA Power Key Output (Active Low)
100mA ground output when PA
mode is selected, can be used to
activate a remote PA system.
12
Siren Key 2 Output (Active Low)
Optional Function
13
Alert 3 (in) Two-Tone, Timed (Rad Alt DH) Active when grounded. Accepts
+28VDC.
14
Alert 2 (in) Pulsing Tone (Low Rotor)
Active when grounded. Accepts
+28VDC.
15
Alert 1 (in) Steady Tone (Engine Fail)
Active when grounded. Accepts
+28VDC.
Optional Lines
Normally NOT enabled, installed as factory installed options only.
Alerting is tone based, with Alert 1 a steady tone, Alert 2 a pulsing tone, and Alert 3 a two-tone, timed
signal. All tones are adjustable at the rear apron, to better match existing horns in the airframe. Alert 2 as
priority over Alert 1, if both are activated at the same time. Alerting can be optionally installed or deleted.
Alerting has separate power and ground connections, unrelated to the rest of the audio system. Power
may be taken from an existing alerting breaker, to retain the alerting defeat function by pulling one
common breaker. Power consumption is very low, typically under 50mA. Alert inputs are optically
coupled, and may be routed to +28VDC or ground without damage.
Day/Night annunciator control forces the annunciators to appropriate levels (external 12/24VDC), it
must be tied to +28V if not used in this way, or if auto-dimming via J101 is used.
View from solder side of DB15S MATING CONNECTOR:
1.................................8
9……........................15
