Service manual

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 contr
olled by an internal Crosspoint con-
troller (for example, an NR-33000 Sync/NI
C/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-