Operating instructions

October 20, 1998

Switch Operation 13

N Blocking Configurations

The relationship between the optical inputs and outputs of the VX500 2

N blocking switch

is shown in Figure 9.

Figure 9:

N Blocking Switch Configuration

The arrangement of the fiber pigtails on a VX500 2

N blocking switch is shown in

Figure 10. The left figure applies to switch units with up to 8 output channels. The right fig-

ure applies to units with 9–16 output channels.

Figure 10:

N Blocking Channel Order (Top View)

11100126 25

11101027 26

11101128 27

11110029 28

11110130 29

11111031 30

111111

block

a. When the channel address is set to N (the highest input channel), Common 1 is blocked and

Common 2 is aligned with Channel N.

Table 4:

Control Codes For 2

N Non-Blocking Configurations (Continued)

RESET D4 D3 D2 D1 D0

Common 1

Active Channel

Common 2

Active Channel

-1

block

COMMON 1

COMMON 2

CHANNEL 1

CHANNEL 2

CHANNEL N

COMMON 1

COMMON 2

CHANNEL 1

CHANNEL 2

CHANNEL N