Telos ZephyrExpress - Manual (Page 132)

SYSTEM FUNCTIONS 8-3
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.
w
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 doesn’t really describe what comes out ZephyrExpress’ serial port.
Modems for analog telephone lines use phase techniques to pack more than
one bit per transition, so — except for very slow ones — they should also be
described in bits per second rather than baud. But people generally use the
terms interchangeably.
RS-232 Pinouts
PIN FUNCTION
2 Rx (Computer to ZephyrExpress)
3 Tx (ZephyrExpress to Computer)
4 DTR (ZephyrExpress ready output)
5 Ground