Grass Valley Trinix NXT v.3.3.1 - Manual (Page 111)

Trinix NXT — Installation and Service Manual 111
LAN and Com Bus Connections
Encore Control
For information about the Encore control system working with Trinix, see
Encore Control
on page 375 .
Com Bus
In multi-frame systems, a Com Bus” is used to loop through each frame, up
to a maximum of four. The Com Bus is intended to provide Routing
switcher monitoring of multiple frames using Broadlinx web pages or
SNMP. The Com Bus uses a 10/100BaseT (Cat 5 twisted pair) cable with RJ-
45 connectors. Shielded cable is recommended, maximum length 60
meters.
1
Maximum length for a non-shielded cable is 100 meters.
Figure 60. Com Bus Example
In TRX-NXT-512x512 systems, if the power supply frame is equipped with
an NR-33000 Broadlinx board, a Cat 5 twisted pair cable must be installed
between the power supply frame Com Bus connector associated with the
NR board and one of the main frame Com Bus connectors.
The Com Bus should be daisy-chained to any additional TRX-NXT-512x512
main frames in the systems that do not have Broadlinx boards. For an illus-
tration, see
Figure 67 on page 140 .
1. Compliance with EEC, EMC, EN series, UL- 1950, and CSA C22.2 No. 950-M89 standards requires use of a shielded cable.
Com Bus cable
(see discussion
for specifications)
Trinix frames
with SR-33000
Sync/OPM
or SR-33500
Sync/OPM
boards
Trinix frame
with NR-33000
Sync/NIC/
OPM board
(Broadlinx
board)