October 20, 1998
Switch Operation
13
2
×
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: 2
×
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: 2
×
N Blocking Channel Order (Top View)
1
1
1
0
0
1
26
25
1
1
1
0
1
0
27
26
1
1
1
0
1
1
28
27
1
1
1
1
0
0
29
28
1
1
1
1
0
1
30
29
1
1
1
1
1
0
31
30
1
1
1
1
1
1
block
a
31
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
2
3
N
0
2
-1
block
1
block
block
block
COMMON 1
COMMON 2
CHANNEL 1
CHANNEL 2
CHANNEL N
COMMON 1
COMMON 2
CHANNEL 1
CHANNEL 2
CHANNEL N