Kantronics KPC–3 Plus User Manual page 48

Your Transceiver's Microphone Connections to the KPC-3 Plus.
For the microphone on your transceiver, you may wish to make notes of the following
connections, which you will use, for wiring your assembly:
identify and make a note of the microphone input (which will be wired to pin 1,
transmit audio on the KPC-3 Plus' DSUB-9 ―Radio‖ port),
identify and make a note of the PTT or STBY connection (which will be wired to
pin 3, Push-to-Talk on the KPC-3 Plus' DSUB-9 ―Radio‖ port),
for base or mobile (but not hand-held) transceivers, identify and make a note of
the ground connection (which, optionally, may be wired to pin 9, one of the
ground pins on the KPC-3 Plus' DSUB-9 ―Radio‖ port, or left unconnected).
Your Transceiver's Speaker Jack Connections to the KPC-3 Plus
For the speaker jack on your transceiver, make a note of the following connections,
which you will use for wiring your assembly:
identify and make a note of the connector to your external speaker plug (which
will be wired to pin 5, receive audio on the KPC-3 Plus' DSUB-9 ―Radio‖ port),
identify and make a note of the connector to your external speaker plug (which
will be wired to pin 6, one of the ground pins on the KPC-3 Plus' DSUB-9
―Radio‖ port).
Constructing the Cable Assembly
As you construct the cable assembly, it may be helpful to refer to the diagram on page
33.
Important: As shown in the diagram immediately below, looking at the rear panel, the
pins in the KPC-3 Plus' female DSUB-9 ―Radio‖ connector are numbered from the
upper right (pin 1) to the lower left (pin 9). As you connect wires to pins on the DSUB-
9 connector on your cable, you need to be sure to connect to the correct pins.
As shown in the diagram below, if you look at the solder side (wiring side) of the male
DSUB-9 connector, the pins are numbered (again) from upper right (pin1), to lower
left (pin 9).
Similarly, when working with a typical 8-pin Mic connector where you know the pin
numbers of pins, you need to consider which way you are looking at the connector
48