USER MANUAL FOR HARDWARE REV 1.0
06-JUN-2019
PAGE 4
3.1
DUPLEX PORT CONFIGURABLE FEATURES
The board supports 1 full duplex channel.
•
Selectable High/Low COS/COR
o
Select the switch setting as shown in the following sections to select the polarity of
active signaling for your radio (typically active low)
•
Selectable High/Low CTCSS
o
Select the switch setting as shown in the following sections to select the polarity of
active signaling for your radio (typically active low)
•
Selectable Flat Audio
•
Adjustable audio input level
•
Adjustable audio output level
3.2
DUPLEX CHANNEL
FLAT AUDIO SELECT
CTCSS HI <-> LOW
Input AUDIO Adjust
Output AUDIO Adjust
Output Amplifier Gain
COS
LOW <-> HI
PIN 1