Grass Valley Trinix NXT v.3.3.1 - Manual (Page 148)

148 Trinix NXT — Installation and Service Manual
Section 3 — Hardware Installation
Setting the Rear Panel Dip Switch
INPUT EXPAND
OUTPUT EXPAND
SYNC REDUNDANT
INT XPT CNTL
60Hz ENABLE
A
B
C
OPEN CLOSED
The above figure is an example of a DIP switch that is located on the rear
panel of the routing switcher. The different settings on this switch are
explained in the sections below
Input/Output Expand
See Duplication and Expansion on page 186 .
Sync Redundant
Note This switch may be labeled “VIT Redundant” on some units.
If the system is equipped with a secondary NR-33000 board, closing this
switch will provide continued operation in case of a single NR failure.
However, operating in the redundant mode will limit the number of pos-
sible sync sources to two. In TRX-NXT-512x512 systems, if Sync Redundant
mode is selected the “C” switch must also be closed. For more information,
see
Figure 79 on page 158 and Figure 80 on page 159 .
Internal XPT (Crosspoint) Control
Open = Trinix Crosspoint bus is controlled by an external Crosspoint bus
controller (for example, a Jupiter VM-3000 or CM-4000; or, an NR board in
another frame).
Closed = Trinix Crosspoint bus is controlled by an internal Crosspoint con-
troller (for example, an NR-33000 Sync/NIC/OPM board). This setting is
used when the NR is in turn being controlled through a LAN connection to
a control system such as a Grass Valley Series 7000 Signal Management
System or Encore.
For more information, see SMS 7000 / Encore Control on page 219 and Jupiter
Control on page 214.
60 Hz Enable Switch
This switch is reserved for future use.
A B C Switches
The “A” switch is closed to disable a frames active NR33000 board from
driving the Com Bus. The switch is only read on startup. If the switch posi-