SENA ProBee-ZE20S-HAOL User Manual
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ProBee-ZE20S-HAxx User Guide Rev 1.9
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2.2
Using Terminal Software for AT Commands
Once the hardware installation is complete, the ZE20S unit is ready to communicate with the computer
using the AT commands using a terminal emulation software. You can use any kind of terminal emulation
software. This document assumes HyperTerminal is used. If you are using Windows Vista or 7,
HyperTerminal is no longer included in the Windows so you need to download HyperTerminal from the
Internet. For more details on HyperTerminal, please refer to Microsoft web page.
Once the HyperTerminal is installed, launch HyperTerminal and select the serial port that is connected to
the ZE20S development board and enter the serial settings to use. The default serial settings of the
ZE20S are 9600 bps, 8 data bit, none parity, 1 stop bit, none flow control.
Figure 2-8 HyperTerminal Serial Settings
To display the AT commands that are being typed, you need to enable the local echo option on the
HyperTerminal. To enable this option, Go to File->Properties->Settings->ASCII setup and select the “Echo
typed characters locally” option. To verify the connection, type AT and press the Enter key. If the AT
command is accepted by the ZE20S, OK string will be displayed on the screen.