Bose 321 tg pages40 64
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41 Computer Setup Procedure (continued) 4. In the properties dialog box, click on the SETTINGS tab and set the controls as shown in the example at right. Note: Be sure to check "Beep three times when connecting or disconnecting". 5. In the properties dialog box under the SETTINGS tab, click on the ASCII Setup button and set the controls to look like the example at right. Click OK to return to the properties dialog box. 6. Once you have made all of the settings in the properties dialog box, click OK to close it. You have now configured your PC to communicate with the 3 21 system console. To connect to the console under test, in the terminal window, click on CALL, then CONNECT and listen for 3 beeps. This will tell you that the PC is connected to communicate with the console. When you have completed your session, click on CALL, then DISCONNECT to end communication with the console.
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42 Console TAP Commands The 3 21 console can be controlled by means of test access port (TAP) commands via the 3 21 system TAP cable, part number 266603, from one of the computer's serial data por ts to the TAP por t located on the LCD display PCB. This port can be accessed from the outside of the console without disassembling the unit. You will need the TAP cable and a RS-232 to TTL con- verter, such as the B+B Electronics model 232LPTTL. You can purchase the converter online at http://www.bb-elec.com. The communication link for the TAP facility is: Via a three wire TTL electrical interface (Transmit data, Receive data, Ground). Logically inverted receive and transmit signals from RS-232 specification. Same asynchronous character / timing construction as RS-232 specification requires. The computer serial data port used for communication should be configured as follows: Half-Duplex operation 9600 baud 8-bits / data character 1 stop bit No parity The console echoes all commands Refer to the computer setup procedure earlier in this section for instructions. There is no special action required to put the 3 21 console into TAP mode. Once power is applied TAP control may be used. The 3 21 console does not respond to multiple commands simultaneously. The user must receive an acknowledgement (ack) prior to issuing the next TAP command. The tables on the following pages list the TAP commands broken down into the various sub- sections of console functions.