Denso BHT-100BW-CE User Manual page 91

[4.4] Communications test
In System Menu, you can test the IrDA interface port and direct-connect interface port.
Preparation for the IrDA interface test
Arrange two BHTs, one as a master station and the other as a slave station (to be tested) with their IR
ports facing each other as illustrated below. In this test, the slave BHT transmits data to the master BHT
and receives the data sent back from the master BHT.
Preparation for the direct-connect interface test
Arrange the 3-pole mini stereo plug as illustrated below and connect it to the direct-connect interface
port on the BHT.
80 cm (31.5 inches) or less
Selecting the "4:COM" on the Hard Test menu calls up the screen
shown at left.
[1] OPTICAL:
[2] CONNECTOR:
78
Switches to the MASTER/SLAVE selection
screen for the IrDA interface test.
Tests the direct-connect interface port.