Black Box ServManager SW995A-R2, Руководство пользователя

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CHAPTER 4: Operation
11”) connectors plus the appropriate adapter: For IBM type PCs and most
terminals, either DB25 female to RJ-12 female (our product code FA044) or
DE9 (“DB9”) female to RJ-12 female (our product code FA043), depending
on your computer/terminal. (If your computer is an Apple or Sun model, call
Black Box for technical suport.)
Take these steps:
1. Plug one end of the cable into the RS-232 serial port on the single or
master ServManager’s rear panel, and the other end of the cable into the
RJ-12 female connector on the appropriate adapter.
CAUTION!
Serial cabling in excess of 50 feet (15.2 m) should be routed with caution.
The maximum cable length depends upon the construction of the cable
and its routing. For extended runs, shielded cable should be used. Avoid
routing near fluorescent lights, air-conditioning compressors, or
machines that may create electrical noise. If you experience a lot of data
errors, use shorter cables. The ServManager’s data rate of 9600 bps
cannot be changed to alleviate this problem.
2. Connect the adapter to one of the computer’s (or terminal’s) COM ports.
4.5.2 S
WITCHING
P
ORTS
R
EMOTELY
(O
PTIONAL
)
To switch ports on a ServManager from a remote computer or terminal
attached to the ServManager’s RS-232 port, take these steps:
1. Set your computer for serial communication at 9600 bps, no parity,
8 data bits, and 1 stop bit.
2. To switch the ServManager to a different port, type or send the desired
port number followed by [ENTER] (a return).
NOTES
If the single or master ServManager is a very old unit, you might need to
type or send a number
one less than the desired port number (“0” for
Port 1, “1” for Port 2, etc.).
If the master unit is a very old ServSwitch, you might need to type or
send an “@” [“at sign”] character before typing or sending the port number.
If you type or send a “?” (question mark) rather than a port number, the
single or master Serv unit will send the number of the currenty selected
port, in ASCII decimal format, back to the remote computer or terminal.