Denso 400BW-CE User Manual page 123

Testing the IrDA interface port
Selecting the "1:OPTICAL" on the COM menu calls up the screen
shown at left.
At the slave BHT to be tested, select the "1:SLAVE" and at the master
BHT, select the "2:MASTER."
Then press the ENT key on each BHT.
During the test, the screen shown at left is displayed.
XXXXX: Transmission speed (2400, 9600, or 115200 bps)
YYY: Hex data being sent (0 to 256)
Upon normal completion of the test, the tested slave BHT beeps once
and displays the screen shown at left.
The master BHT automatically returns to the COM menu.
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Chapter 2 Getting Started the BHT and System Menu