RFL Communications 21 Sub-MUX Especificaciones descargar pdf (Pagina 70)

Page 4–12

FOCUS System Manual

Figure 4–6.

Four-fiber Hot Standby Test Connections

To test the Optical Transceiver Module’s four-

fiber hot standby functionality, complete the

following steps:

This test applies only to the version of the Optical

Transceiver Module with the four-fiber hot

standby option. For ease of reference, we will

refer to the four chassis according to their labels in

Figure 4-6 (i.e., Local, Remote 1, etc.).

1. Set up and energize the four chassis.

Set up and energize the four test chassis per

Steps 1–3 in the “Acceptance Test” section

earlier in this chapter.

2. Connect the four chassis with fiber optic

cables.

Connect the four test chassis using fiber optic

cables per the diagram in Figure 4-6.

3. Observe the LEDs.

All the green LEDs on both the main and

auxiliary boards of all four chassis should be

on (i.e., the STATUS, HSBOK-C, and

HSBOK-D LEDs).

4. Disable transceiver 1-1 A on the “Local”

chassis.

Disconnect the fiber optic cable going to the

receiver of transceiver 1-1 A on the “Local”

chassis.

5. Observe the LEDs on all four chassis.

Table 4-2 shows the LEDs that should be lit

on all four chassis after you complete Step 4.

Amore visual depiction of the LEDs on each

chassis is shown below (the darkened LEDs

are lit, or ON).

Hot Standby

Fiber Path

Main Fiber

Path

Local

1-2

1-1

Remote

1-1

1-2

Remote

1-1

1-2

Remote

1-1

1-2

CHASSIS

LED

LB-A LB-B LSIG-A LSIG-B SWTCH-C HSBOK-C LSIGC LSIGD SWTCH-D HSBOK-D

Local ON ON ON ON

Remote 1 ON ON ON ON

Remote 2 ON ON ON ON

Remote 3 ON ON ON

Table 4–2. LEDs on all Four Chassis with Transceiver 1-1 A on the “Local” Chassis Disabled.

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 341 342

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