Black Box 4-Port Manuale Utente Scaricare il pdf (Pagina 15)

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Chapter 2: Overview

Table 2-3. LES422A components.

Number in Figure

2-3 or 2-4 Component Description

1 (1) RJ-45 connector

Connects a standard Ethernet network drop using a straight-through RJ-45 male Ethernet cable.

2 (2) DB9 male connectors

Connects to RS-232, RS-422, or RS-485 serial devices.

3 (1) 2-wire terminal block connector

Removable 2-position terminal block with +, -, and chassis ground connections.

4 (2) Serial Port LEDs

Flashes green when data is being transmitted or received on the serial port.

Lights steady green when the serial port is open.

5 (1) Ethernet Link LED

Lights when a connection is made.

Flashes when there is data traffic on the Ethernet link.

6 (1) Ready LED

Lights green continuously when the unit is initializing.

Flashes once per second when the system is operating correctly.

Off when something is wrong, for example, another device uses the same IP address.

7 (1) Reset button

Used to initiate a hardware reset, enter console mode, or reload factory defaults.

2.4.3 4-Port Hardened Serial Server (LES424A)

Figures 2-5 and 2-6 show the front and side panels of the LES424A. Table 2-4 describes its components.

7 7 5 6 5 6

4 3 4 5 6 5 6

Figure 2-5. LES424A front panel.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 59 60

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Black Box 4-Port Manuale Utente Pagina 15