WWW.ICS-CTRL.COM
USER MANUAL FOR HARDWARE REV 3.11
07-APR-2018
PAGE 7
3.1.8
PORT CONNECTOR & PIN 1
Each repeater port comes out to a 2x5 male header. This header is typically connected 1:1 into a DB9
Female connector, but the user may also make a custom cable/adaptor for their own equipment if
desired.
Connector Selection: Due to the tight spacing of the board, it is important to select mating connectors
that do not exceed the width of the male pin alignment blocks, or you risk mechanical interference with
the port 2 header. For custom cables we suggest using connector block
952-2033-ND from Digikey
, or a
similar variant.
STANDARD IDC RIBBON CABLE CONNECTORS WILL NOT FIT.
Pin 1 is located in the bottom left corner as shown above in section 3.1. When using ICS-CTRL provided
DB9 connectors, will correspond with the brown wire.
CONNECTOR PINOUT:
1-
CTCSS ENCODE OUTPUT
2-
CTCSS INPUT FROM RX RADIO
3-
PUSH TO TALK (OPEN COLLECTOR)
4-
AUDIO OUTPUT
5-
AUDIO INPUT
6-
GROUND
7-
COS INPUT FROM RX RADIO
8-
GROUND
9-
GROUND
10-
GROUND (DB9 SHELL)
3.2
OUTPUT AMPLIFIER GAIN
This is a multi-turn, 10kΩ potentiometer that can be used to further adjust the output audio amplitude.
It is recommended to leave this potentiometer at the midpoint value for normal operations.
3.3
BUILT-IN AUDIO
The system contains a
SGTL5000 Audio codec chip
which provides stereo input and output capability so
you won’t require a USB sound card to have receive audio capability.
The stereo audio is split into 2 mono channels, channel 1 uses the RIGHT audio channel and channel 2
uses the LEFT channel.
Software is required to provide the mixing of the channels should you desire to blend channel 1 and 2
audio. Any base images provided by ICS-CTRL will have this built in by default.