Specifications

CW Interface settings
This section describes how to configure the TRX-Manager for CW Keying:
A : TRX-Manager as CW Generator
B : Keying using the internal CAT Keyer of the transceiver
C : Keying using Winkey
A) TRX-MANAGER AS CW GENERATOR
TRX-Manager generates CW and keys the RTS/DTR lines of a serial port or the Select line of
a parallel port.
You configure the CW keyer from the CW tab of the Parameters/Setup dialog.
However, please uncheck the Internal CW option for the transceiver to be used with this
keyer since CW Internal has the priority over any other settings of the CW Tab for a
transceiver which supports keying via CAT (see C).
A.1) SERIAL PORT
How to choose the serial port and the line to use ?
The CW interface keys the DTR or RTS line of a serial port. As DTR or RTS lines are not used
by all the serial ports, you can use an already occupied port provided you make sure that its
DTR or RTS line is free.
For your information, from TRX-Manager:

DTR or RTS lines of the Transceiver ports can be disabled in order to be available for CW
(then check the correct operation of your CAT interface)

DTR or RTS lines of a TNC are both used and are therefore not available for CW

RTS and DTR lines of the Rotators are reserved and are therefore not available for CW.
If you carry out a bad selection, TRX-Manager prompts a warning message but you could also
note a continuous key-down condition. Your choice must be coherent with the choice made
for the PTT line.
Under Windows ME
Please see the Troubleshooting/Serial port section for more information about the DTR and RTS
lines.
A.2) Serial Interface Interface wiring
The interface, identical to that of other programs, is very simple to build. The level of RTS (or
DTR) lines passes from -12v to +12v with the rhythm of CW Keying. A 1N4148 diode makes it
possible to chop the -12v signal whereas a fast relay (standard reed DIL) is switched by the
+12v. The whole unit can be assembled in a DB9 or DB 25 connector.
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