Grass Valley Trinix NXT v.3.3.1 User Manual
Page 102
102
Trinix NXT — Installation and Service Manual
Section 2 — Planning Guide
The next example applies to existing systems where re-arrangement of
cables in a sequential pattern is not practical or desirable:
Notice that in all cases the primary path I/O numbers are always in the 1-
128 range while the secondary path I/O numbers are always in the 129-256
range.
TRX-NXT-128x128
Recommended Protected path ranges for TRX-NXT-128x128 routers are as
follows:
For example, to protect an output in the range 1-32, choose a corresponding
input in the range 1-32; this selection will be the Primary path. For the Sec-
ondary (failover) path, choose an output in the range 33-128 and a corre-
sponding input in the range 33-128.
This will provide the most independent possible paths through a TRX-
NXT-128x128, that is, the primary path will use one pair of input and
output boards while the secondary path will use a different pair of boards.
CAUTION With a TRX-NXT-128x128, it is not possible to arrange completely indepen-
dent paths, that is, paths that use different matrix boards and power supplies.
Protected path configuration for TRX-NXT-128x128 routers provides redun-
dancy for input and output boards only.
Table 9. TRX-NXT-256x256 Protected Paths (Example of Non-Sequential Numbering)
Primary Path
Secondary Path
Out
In
Out
In
Name
No.
Name
No.
Name
No.
Name
No.
AirPP
21
MCPP
12
AirSP
190
MCSP
165
Sat1PP
53
StuAPP
54
Sat1SP
133
StuASP
248
Sat2PP
109
StuBPP
98
Sat2SP
189
StuBSP
129
.
.
.
.
.
.
.
.
.
.
.
.
NetPP
4
MainPP
56
NetSP
144
MainSP
145
Table 10. Recommended Protected Path Ranges
Primary Path
Secondary Path
Out
In
Out
In
1-32
1-32
33-128
33-128
33-64
33-64
1-32,
65-128
1-32,
65-128
65-96
65-96
1-64,
97-128
1-64,
97-128
97-128
97-128
1-96
1-96