Grass Valley Trinix v.2.4.1 - Manual (Page 56)

Planning Guide
56 Planning and Installation Manual
Termination for Pre-wired Expansion Frames
As described above, unused BNC connectors on port expanders should
be terminated for best performance. However, it may be desirable to
install an empty or partially stuffed frame and associated cabling to
simplify future expansion, and when such cabling connects to a port
expander that is carrying active signals, special termination hardware
is required. Since the presence of pre-wired cabling will not permit
standard BNC terminators to be installed on the expander, an LD-33100
Loader board is installed in the associated frame in place of an input or
output board to provide correct termination.
Figure 25. LD-33100 Loader board
Input Expansion
For example, Figure 26 shows a 512 x 512 system expandable to 1024 x
512:
Figure 26.
Frame 1 contains no input or output boards, but wiring has already
been installed between Frame 1 and the PE-331016 Port Expanders.
Frame 0
Trinix
512 x 512
1 - 512
1 - 512
Future input
wiring
1 - 512
outputs 32
PE 33016
used as
combiners
Trinix
512 x 512
Frame 1
(unused) Installed pre-wiring
Output slots should be terminated
using LD-33100 Loader boards