NV5128 Multi-Format Router • User’s Guide
33
2. Introduction
Active Cards
32 outputs crosspoint array on each card set for switching (creating a 64 inputs x 64 outputs switch-
ing matrix) without going through the motherboard.
Figure 2-26 shows the signal flow path through a pair of Machine Control card sets.
Figure 2-26. Machine Control Signal Flow (64-Port Configuration)
Time Code Signals
The NV5128 supports SMPTE time code signals. A time code is a sequence of numeric codes gen-
erated at regular intervals by a timing system. Time codes are usually used to synchronize a variety
of signals to a specific start and end time, without regard to any other timing device. For example, a
production plant may use a time code signal to which all signals distributed within the plant are
synchronized. This ensures synchronization of signals to a single “master” clock instead of individ-
ual equipment clocks.
Input Card
The time code input card (EM0408) receives 16 time code signals through 16 Phoenix connectors
housed on a backplane. (See
on page 13.) 16 differential input receivers accept time
code input signals from the input backplane. The receivers send the single-ended outputs to Low
Voltage Differential Signal (LVDS) buffers and then to the motherboard. The signal format on the
motherboard is differential.
Output Card (EM0409)
The time code output card (EM0409) receives up to 16 inputs from the motherboard. Differential
receivers buffer the inputs and forward them to a 128 inputs x 16 outputs crosspoint array for
switching. The time code outputs are reformatted to comply with SMPTE standards and then sent to
the output backplane through time code signal differential line drivers.
Figure 2-27 shows the time code signal path:
Figure 2-27. SMPTE Time Code Signal Flow
32
32
Transmitters
(×32)
EM0482 Port Module
32
16
64×32 Crosspoint Array
and Port Control Logic
Receivers
(×32)
16
32
16
Modules
Motherboard
Transmitters
(×32)
Special Motherboard Traces
EM0482 Port Module
32
16
116
RJ-45 Ports
64×32 Crosspoint Array
and Port Control Logic
Receivers
(×32)
32
16
16
16
32
EM0383
Backplanes
1732
3348
4964
16
32
Slots 12 and 13
Slots 14 and 15
I/O
Connectors (up to 16)
Motherboard
Input Card
Recr
Output Card
XPT
128x16
I/O
Connectors (up to 16)
Recr
Refor-
matter
Summary of Contents for NV5128
Page 1: ...User s Guide NV5128 Multi Format Router...
Page 44: ...34 Rev 2 3 14 Oct 08 2 Introduction Active Cards...
Page 92: ...82 Rev 2 3 14 Oct 08 6 Maintenance Obtaining Service...
Page 102: ...92 Rev 2 3 14 Oct 08 8 Glossary Glossary...
Page 106: ...96 Rev 2 3 14 Oct 08 A Part Numbers Power Supplies...
Page 114: ...104 Rev 2 3 14 Oct 08 Index...
