Key, Keyer, And Computer-Driven Keying Interconnections - Yaesu FT DX 9000 CONTEST - MANUAL 2 Operation Manual

I I
NSTALLATION AND NTERCONNECTIONS
K , K , C -D K I
EY EYER AND OMPUTER RIVEN EYING NTERCONNECTIONS
The FT 9000 Contest includes a host of features for the CW operator, the functions of which will be detailed in the
DX
"Operation" section later. Besides the built-in Electronic Keyer, two key jacks are provided, one each on the front and rear
panels, for convenient connection to keying devices.
The Menu system allows you to configure the front and rear panel KEY jacks according to the device you wish to connect.
For example, you may connect your keyer paddle to the front panel KEY jack, and use Menu #42 for paddle input, while
connecting the rear panel's KEY jack to the keying line from your personal computer (which emulates a "straight key" for
connection purposes), and configure the rear panel jack using Menu #44.
Both KEY jacks on the FT 9000 Contest utilize "Positive" keying voltage. Key-up voltage is approximately +5V DC,
DX
and key-down current is approximately 1 mA.
2
DASH
DOT
COMMON
DASH
DOT
COMMON
Advice
When connecting a key or other device to the KEY jacks, use only a 3-pin ("stereo") 1/4" phone plug; a 2-pin plug will
place a short between the ring and (grounded) shaft of the plug, resulting in a constant "key-down" condition in some
circumstances.
Page 16 FT 9000 C O M
DX ONTEST PERATION ANUAL