Planning and Installation Manual 93
8. Connect the desired input and output video cables.
To permit proper vertical interval switching, the inputs must be
aligned within plus/minus 1/4 line with respect to the reference
signal.
The use of 75 ohm BNC connectors (rather than 50 ohm) is recom-
mended for HDTV applications.
If the system includes port expanders, all unused BNC connectors
must be terminated with 75 ohm terminators.
On DV-33512 units, the output connectors are not arranged in a left-
to-right sequence. The rear-panel labels are correct.
Note Labels for “0-based” numbering schemes are available. See page 40.
9. For “protected path” operation, the Broadlinx software can be
configured to monitor router outputs that are feeding critical
downstream equipment (such as a transmitter). If the “primary”
output signal is interrupted, the system will automatically select the
“secondary” output that is carrying the same signal and trigger a
system alarm. For wiring information, see page 60. For
configuration instructions, see Section 5-Protected Path Configuration.
10. If the router is equipped with VI-33100 “universal” input boards,
and analog signals are received, an extensive set of gain, phase,
filtering, and other adjustments are available for each signal. For
more information about the VI-33100 module, please refer to
Section 6-Analog Input Processing.
11. Connect the appropriate house reference signal(s).
Depending on the system, up to four independent sync references
can be used. For system diagrams, see page 107.
12. Re-configure the switch point if desired.
The switch point is factory-set to the recommended video line for
the standard that is detected. A V-phasing feature, available with
the NR-33000, SR-33000 with Rev B FPGA Software Update, and
SR-33500 allows the user to adjust the switch point from -1 line to
+2.5 lines if necessary. For more information, see page 117.
Note If you make adjustments on the SR-33500 as part of this step, you may
want to wait until all remaining steps in this list have been followed and
any additional adjustments made before reinstalling the board.
13. Select the desired sync line on each Output board.
This applies to systems with more that one sync reference. Each
output board provides a block of 32 outputs and by factory default
each block is assigned to sync line 1, which corresponds to the “Pri-
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