116Chapter 3Communications Operations ofthe BHT-202Q/202QW-CEDescribes the communications operations of the BHT—the spread spectrum communication(BHT-202QW-CE only), infrared communication, USB interface specifications, basic communicationsspecifications, communication using Ymodem, and ActiveSync--for data transfer with the host PC orother devices.3.1 Spread Spectrum Communication ..................................................................................................................1173.1.1 Notes for Wireless Operations..................................................................................................................1173.1.2 RF-Related Parameters............................................................................................................................1183.2 Infrared Communication..................................................................................................................................1203.3 Connector interface specification ....................................................................................................................1213.4 Basic Communications Specifications and Ymodem ......................................................................................1233.4.1 Basic Communications Specifications ......................................................................................................1233.4.2 Using Ymodem .........................................................................................................................................1253.5 ActiveSync ......................................................................................................................................................1263.5.1 Configuring the Host PC ...........................................................................................................................1263.5.2 Connection Using ActiveSync...................................................................................................................128