Black Box SW545A, Руководство пользователя, Страница: 12 / 64

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CHAPTER 2: Introduction
2.2 The Port Manager Switches Illustrated
2.2.1 T
HE
F
RONT
P
ANELS
The front panels of the Port Manager Switches are very similar to each other.
The front panel of the 16-port unit is shown in Figure 2-1 below; it includes
several controls and indicators, whose functions are described beneath the
illustration. The front panel of the 8-port unit does not have ACTIVITY LEDs
9 through 16.
Figure 2-1. The front panel of the 16-port PM Switch.
➀
CLEAR Button: Press this to restart the PM Switch’s operating program
without changing the parameter settings you’ve chosen or breaking
existing port connections.
➁
ON LED:
Lights when the unit is receiving AC power.
➂
SET Button: Press this button to initialize the PM Switch to the default
values corresponding to the current settings of its SETUP Switch (see
Section 3.1 ). To initialize the PM Switch, press and hold both the SET
button and the CLEAR button, release only the CLEAR button, and then
release the SET button.
NOTE
Be aware that when you initialize the PM Switch, all command-selected
parameters will be cleared, and the PM Switch will revert to its default
parameters. This might cause existing connections to fail and prevent
new connections until you issue commands to change parameters on
certain ports.
➃
RDY LED: Flashes to show that the unit is operational.
➄
ACTIVITY LEDs: Light to show that the corresponding port is receiving
data.