Panasonic 9TGCF-P13 Operating Instructions Manual page 35

When Connecting the CF-P1 with a Computer via the Cradle
Removing
Using the Infrared Communication Port
By using the infrared communication port, data can be exchanged with-
out a physical connection (e.g., using a cable or the cradle) between the
CF-P1 and a host computer.
Position CF-P1 so that the infrared communication port is face-to-face
with the port of a host computer.
Have the infrared port of the CF-P1 face the infrared communication
port of a host computer.
We recommend a port to port distance of 30 cm {11.8"} or less.
Expansion Connector of the Cradle
or
Infrared Communication Port
35