How to Connect to Audia/Nexia Using HyperTerminal RS232 CONTROL One of the many ways that Audia and Nexia can be controlled is via RS232 commands. This type of control is one of the preferred methods when using third party controllers. Sometimes it is required to test these commands before implementing them or gain access to a unit in order to view/change IP settings or rescue a faulty unit. In any of these cases, a unit can be accessed by using HyperTerminal. This note explains how to establish a connection via HyperTerminal. For further information on changing IP settings or rescuing a faulty unit, please refer to the proper notes. PROCEDURE 1. 2. 3. Connect your computer serial port (Com port) to the RS232 port on the unit using a 9 pin straight-through cable. (NOT a null-modem cable) In Windows XP or 2000, open a HyperTerminal session by going to Start Æ Programs Æ Accessories Æ Communications Æ HyperTerminal. Please note that Windows Vista does not have the HyperTerminal application installed by default. The application can be downloaded from the web. In the connection description dialog, enter a name for your connection and click OK. Figure 1 – Connection Description Dialog 4. In the Connect To dialog, under the pull-down menu labeled Connect Using, select the location of your Serial Com Port and click OK. Figure 2 – Connect to dialog BIAMP SYSTEMS TECHNICAL SUPPORT GROUP www.biamp.com • Page 1 of 3 5. In the COMx Properties dialog, set the Com port properties to 38400 / 8 / None / 1 / None as shown in figure 3 and click OK. Figure 3 – COMx Properties Dialog 6. To display what’s being typed, go to File Æ Properties, and select the Settings Tab. Click on ASCII Setup and enable "echo typed characters locally". For easier reading, you can also enable “Send line ends with line feeds” and click OK. Figure 4 – ASCII Setup Dialog 7. To test the connection, hit the Enter key a couple of times to ensure that communication has been established. The unit should respond with a –ERR message as seen in figure 5. If “Send line ends with line feeds” was also enabled, there will be a second message from the unit every time we hit the Enter key. Please disregard these. A second option would be to power cycle the unit (unplug the AC and plug it back in), after the unit reboots, it should respond with a welcome message as seen in figure 6. BIAMP SYSTEMS TECHNICAL SUPPORT GROUP www.biamp.com • Page 2 of 3 Figure 5 – Error messages Figure 6 – Welcome message If this application note did not answer your questions on the topic of “How to Connect to Audia/Nexia Using HyperTerminal”, please contact Biamp Technical Support Group by phone at + 1 800 426 1457 or by email at [email protected]. BIAMP SYSTEMS TECHNICAL SUPPORT GROUP www.biamp.com • Page 3 of 3