Yaesu FTDX10 Reference Manual page 4

CAT
( Computer Aided Transceiver )
Using the RS-232C Cable
When using an RS-232C cable, the "PS" command (POWER SWITCH) is not available. Therefore, the transceiver
cannot be turned ON with the CAT command.
The FTDX10 transceiver has a built-in level converter, allowing direct connection from the rear-panel RS-232C
jack to the serial port of your computer without the need of any external boxes.
You will need a serial cable for connection to the RS-232C (serial or COM port) connector on your computer.
Purchase a standard serial cable (not the so-called "null modem" type), ensuring it has the correct gender and
number of pins (some serial COM port connectors use a 9-pin rather than 25-pin configuration). If your computer
uses a custom connector, you may have to construct the cable. In this case, refer to the technical documentation
supplied with your computer for correct data connection.
① ② ③ ④ ⑤
⑥ ⑦ ⑧ ⑨
Pin No. Pin Name I/O
 N/A ---
‚
SERIAL OUT Output
ƒ
SERIAL IN Input
„
N/A ---

GND ---
†
N/A ---
‡
RTS ---
ˆ
CTS ---
‰
N/A ---
Personal Computer
COM
RS-232C
Function
---
Outputs the Serial Data from the
transceiver to the computer.
Inputs the Serial Data from the
computer to the transceiver.
---
Signal Ground
---
---
---
---
RS-232C "Straight" Cable
FTDX10
3
Operation