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Chapter 3
Communications Operations of
the BHT-100Q/100B
This chapter describes the communications operations of the BHT-100Q/100B—the IR
communication, RS-232C interface specifications, the basic communications specifica-
tions, and the communications protocols—for data transfer with the host computer or
other devices.
3.1 Infrared Communication ....................................................................................... 109
3.2 RS-232C Interface Specifications.......................................................................... 111
[ 1 ] Interface Connector and Pin Assignment ............................................. 111
[ 2 ] Interface Cable Connection .................................................................... 112
3.3 Basic Communications Specifications and Parameters ..................................... 113
3.3.1 Basic Communications Specifications.......................................................... 113
3.3.2 Communications Parameters........................................................................ 115
3.4 Communications Protocols................................................................................... 116
3.4.1 BHT-protocol ................................................................................................... 116
[ 1 ] Overview.................................................................................................. 116
[ 2 ] Control Characters .................................................................................. 117
[ 3 ] Basic Format of Transmission Messages.............................................. 119
[ 4 ] Text Format .............................................................................................. 120
3.4.2 BHT-Ir Protocol................................................................................................ 122
[ 1 ] Overview.................................................................................................. 122
[ 2 ] Control Characters .................................................................................. 123
[ 3 ] Basic Format of Transmission Messages.............................................. 125
[ 4 ] Text Format .............................................................................................. 126