Black Box SW545A, Manual, Page: 25 / 64

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PORT MANAGER SWITCHES
4.3 Initializing the Unit to Default Settings
If the SETUP Switch configuration has been changed while the PM Switch is
powered ON, the unit must be initialized in order for the new switch
configuration to take effect. To do this, simultaneously press the SET button
and CLEAR button, located on the front-panel of the PM Switch unit. Then
release the CLEAR button, wait one second, and then release the SET button.
CAUTION!
When the PM Switch is initialized, the unit will revert to the parameters
specified by the current SETUP Switch configuration. Any command-
selected parameters will be lost.
4.4 Connecting Devices to the PM Switch
From modems to printers, many different types of devices can be connected
to the PM Switch. To physically connect a device to the PM Switch, take these
steps:
1. Access the Command Mode.
2. Determine which PM Switch port will be used for connection to the new
device (Port 3, for example).
3. Type “/S” and press [Enter]. The PM Switch will display the Status
Screen. Find the “BUFF” column in the Status Screen. The BUFF
column lists the amount of memory currently being used to store
buffered data for each port.
a) If the Status Screen indicates the port has data stored in buffered
memory, issue the “/E” command to clear the buffer. The “/E”
command uses the format:
/E ## [Enter]
where ## is the number of the PM Switch port buffer to be cleared.
For example, to clear the buffer for port three, type “/E 3” and press
[Enter].
b) Note that buffered data which has been cleared using the /E
command cannot be recovered.
4. Attach an appropriate modular adapter to an RS-232 serial port on the
device you intend to connect.