ACCESS/A A711 L-Series Installation & Operating Instructions 09RE416
Technisonic Industries ltd. Copyright 1996, 1997, 2010, 2011 BY TiL ALL RIGHTS RESERVED Page 2-17
Top Connector J201 DC37P
Mating
Cable Connector:
DC37S
(37 Pin Female)
J201
Connector Pin Assignments
RX Connector
Low
High
Connection
Notes
20
1
ICS Node
ICS Tie Line Between Units
21
2
SUM Node Input
For connection to A770
expansion units only
22
3
Direct Input (Has Internal Level Set)
Un-switched Direct Input
4
Shield ground
Shield drain for input lines.
23
5
CST OUT or Music R or NAV Audio IN
(supports BRIDGE OUTPUT!)
Defined at time of manufacture,
only one mode supported.
24
6
CST IN or Music L or NAV Audio IN
(supports BRIDGE OUTPUT!)
Defined at time of manufacture,
only one mode supported.
25
7
NAV 6 RX Audio
(Un-switched)
26
8
NAV 5 RX Audio
(Un-switched)
27
9
NAV 4 RX Audio
(Un-switched)
28
10
NAV 3 RX Audio
(Un-switched)
29
11
NAV 2 RX Audio
(Un-switched)
30
12
NAV 1 RX Audio
(Un-switched)
31
13
COM 7 RX Audio
Right-hand-most TX switch
32
14
COM 6 RX Audio
33
15
COM 5 RX Audio
34
16
COM 4 RX Audio
35
17
COM 3 RX Audio
36
18
COM 2 RX Audio
37
19
COM 1 RX Audio
Left-hand-most TX switch
Common Lines
Floating above airframe ground in ACCESS systems, but serves as
common signal low for corresponding input signal lines.
Common Lines
Floating above airframe ground in ACCESS systems, and not
connected to any other common line in the system.
View from solder side of DC37S MATING CONNECTOR:
1............................19
20............................37
CST (Cross Side Tone) can be connected only between 2 stations. DO NOT select the same radio
locally that you are monitoring via CST on another panel, or audio distortion may occur. The sole purpose
of CST is to monitor outgoing transmissions at another station on radios YOU ARE NOT MONITORING
YOURSELF. Make this connection short, and shield exactly as directed to avoid noise. This panel
position can also be defined as music or NAV inputs, fully floating from each other. Main RX board
jumpers set this functionality, but because panel marking are also involved, this is normally set only at the
time of manufacture.
