Telos user manual ZephyrExpress data ports, Serial Port

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3.Select System Software: Set default. This restarts ZephyrExpress. Since the newer version was previously running (because of step 2), it becomes the default. The older version is erased from system memory.

WARNING!

Try new, Revert, and Set default all reboot the system. This drops any current calls, and causes ZephyrExpress to resynchronize to the ISDN line.

ZephyrExpress data ports

The Serial Port

ZephyrExpress’ serial port lets you control ZephyrExpress’ from a modem or personal computer. Any parameter that can be set using a menu can be queried and set via remote control, and you can remotely instruct ZephyrExpress to place a call on one or both ISDN lines. There is no provision for remotely controlling the front-panel routing switches or volume knobs.

You can connect a palmtop or portable computer to ZephyrExpress to quickly set parameters in the field. You can connect ZephyrExpress to a modem or terminal adapter on a separate telephone line for remote control of broadcasts or emergency studio- transmitter links.

?The serial port accepts a male DB-9 and matches the pinouts on most personal computers. The default line protocol is 8 bits, 1 Stop Bit, No Parity, 9600 bps. You can change the speed using System: Baud Rate or via a remote command.CURIOSITY NOTE!Baud refers to the speed of an analog data stream in transitions per second, so

the term doesnÕt really describe what comes out ZephyrExpressÕ serial port. Modems for analog telephone lines use phase techniques to pack more than one bit per transition, so Ñ except for very slow ones ÑÊthey should also be described in bits per second rather than baud. But people generally use the terms interchangeably.

RS-232 Pinouts

PIN FUNCTION

2Rx (Computer to ZephyrExpress)

3Tx (ZephyrExpress to Computer)

4DTR (ZephyrExpress ready output)

5Ground

SYSTEM FUNCTIONS 8-3