Firmware Version 1.21
2/2/2010
7
Figure 2 - Paddle wiring diagram
As the dot and dash paddles are closed, the keyer will send perfectly timed and spaced
dots and dashes. If the sidetone monitor is enabled, you will hear the Morse code dots
and dashes from the internal speaker. The sidetone volume can be adjusted using the
control located on the rear panel, and the sidetone monitor can be turned off using the
‘M’ command from the command interface.
A straight key may be connected to the
ST KEY
jack. When connected, the straight key
will directly key the
KEY OUT
output. The straight key cannot be used for command
entry or control. Note that there is no optical isolation of the straight key jack. This
means that if your rig has a high keying voltage, that voltage may be present on parts of
the straight key. Also, the
AMP OUT
output will not be active when using the straight
key.
Figure 3 - Straight key and KEY OUT wiring diagram
Radio Connections
Two outputs are provided for connection to your station transmitter or transceiver and
amplifier. The
KEY OUT
connection is an optically isolated, solid-state relay output
used to key a transmitter or transceiver. It can key virtually any solid state transmitter or
transceiver, as well as most tube gear. See the Specifications page for maximum ratings.
It is set up for a 3.5mm mono plug, wired the same as the
ST KEY
(straight key) input,
shown above. Note that this output is not polarity sensitive.
Paddle Wiring
Dot
Dash
Common
Straight Key Wiring
Key
Ground
