3
CAT
(Computer Aided Transceiver)
Operation
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
FTDX101MP/FTDX101D
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.
The RS-232C jack cannot be used when the external antenna tuner is selected on the menu mode “
OPERATION
SETTING
” → “
GENERAL
” → “T
UNER SELECT
”.
•
TUNER SELECT
Function: Internal and external antenna tuner settings.
Available Values: INT / EXT1 / EXT2 / EXT3
Default Setting: INT
Description: Select whether to use the “built-in antenna tuner” or the “external antenna tuner”. When using
an external antenna tuner, select the antenna connector to be connected.
INT: Use the built-in antenna tuner. External antenna tuner cannot be used.
EXT1: Use an external antenna tuner connected to the ANT 1 connector.
EXT2: Use an external antenna tuner connected to the ANT 2 connector.
EXT3: Use an external antenna tuner connected to the ANT 3/RX connector.
NOTE:
The RS-232C jack cannot be used while using the external antenna tuner.
The built-in antenna tuner cannot be used with an antenna connector connected to an external an-
tenna tuner.
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.
Pin No.
Pin Name
I/O
Function
N/A
---
---
SERIAL OUT
Output
Outputs the Serial Data from the
transceiver to the computer.
SERIAL IN
Input
Inputs the Serial Data from the
computer to the transceiver.
N/A
---
---
GND
---
Signal Ground
N/A
---
---
RTS
---
---
CTS
---
---
N/A
---
---
ANT 1
ANT 2
EXT SPKR
KEY
ACC
TUNER
PTT
METER
GND
LINEAR
+13.8V
REM
EXT ALC
RS-232C
A
B
RS-232C
COM
Personal Computer
RS-232C “Straight” Cable
FTDX101D
① ② ③ ④ ⑤
⑧ ⑨
⑦
⑥