GRASS VALLEY TRINIX NXT -, Installation Manual

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200 Trinix NXT — Installation and Service Manual
Section 10 — Hardware Installation
Output Monitoring
Output monitoring allows verification of Routing switcher performance
without interrupting normal operations. A separate internal switching
system is used to switch the Monitor Output to any output of the Routing
switcher.
Using a control panel, the operator picks an output as usual—in this case,
the Monitor Output. The operator then selects an
input , but this input is
actually one of the Routing switcher outputs.
With the TRX-NXT-128x128 and TRX-NXT-256x256 frames, two pairs of
output monitor ports are provided by the NR-33000 board (one side of each
pair is inverted). Two additional dual ports are optionally available when
a second NR-33000 is added; this provides four monitor ports.
Monitoring Ports
The TRX-NXT-128x128 frame, output monitoring come from NR cards (two
each).
The TRX-NXT-512x512 frame, the SR-33500 Sync/OPM board provides
four monitoring ports.
The TRX-NXT-512x1024 frame, the two TRX- OPM boards provides cas-
cading inputs and four monitoring ports.
The TRX-NXT-256x512 frame, the TRX-SR Sync/OPM boards provides
four monitoring ports.
The TRX-NXT-128x256 frame, the TRX- OPM boards provides four moni-
toring ports.
Symmetrical Frames
For Trinix Symmetrical frame configurations that require multiple frames,
the monitor signals are brought through a Port expander that is used as a
combiner (see
page 208 ).
Asymmetrical Frames
For Asymmetrical configurations that require multiple frames, the monitor
signal is cascaded from the expansion frames to the main frame via the
TRX-SR or TRX-OPM output monitor inputs (see
Figure 115 on page 202
for details). The Monitor Inputs are the bottom four connections.
The TRX-SR is used on the 256x512 frame and the TRX-OPM is used on the
128x256 and 512x1024 frames.
Examples of basic monitoring connections are shown below.