Telos Zephyr Xstream - Manual (Page 259)

USER’S MANUAL
Section 12: System Functions and Remote Control 247
Contact Closures
For additional information on connecting to the parallel GPIO port see manual Sections 3.2
(Guided Tour of the Hardware ‐ non mixer) and Section 3.4 Guided Tour of the Hardware MX/P
and Section 11.6 ‐ 11.7 (Detailed Menu Reference).
Parallel outputs may be affected either by the corresponding input at the remote Zephyr or
Xstream (end‐to‐end operation), or can be used to monitor functions of the Xstream. See
Section 11.6 for details on the menu selections affecting the contact closures functionality.
Normally, the closures are simply passed‐through from one end to the other. The function of
each input or output can be set using the front panel:
12.2 Remote Control
The Command Line Interface
The command line interface can be accessed in two ways: Via the RS‐232 serial port or by using
Telnet to access the unit over IP through the serial port.
RS‐232 Port
The RS‐232 serial port can be used for computer control of the system. Full status and control
are available via this port, including ISDN dialing, storage of set‐ups, etc.
The communication protocol is simple ASCII text, so it may be used easily with any computer
and terminal emulation software. Some are using a palm top computer with macros to control
their Xstreams in the field
Some “terminal emulation” software possibilities are:
• For the PC: Crosstalk, Procomm, MS Windows built‐in HyperTerminal, etc.
• For the Macintosh: Z‐Term, White Knight, etc.
The Zephyr Xstream may be connected locally to a personal computer, or to a modem for
control from a remote site. There will be differences in the required cabling, as described in the
Section 3. The Zephyr Xstream serial port is configured as DCE (Data Terminal Equipment),
which means it looks like the connection on a modem, rather than on a computer.
• With local computer operation, a standard (non‐null) cable is used.
• With a modem connection, a special "null modem" cable is required. For
more information on the correct cable see Section 4.
Accessing the command line using the serial port
Note, this same command language is available using Telnet to access the Zephyr Xstream.
First connect the Xstream to a computer’s serial port. Since the Xstream has a DCE interface you
will need to use a straight through cable.