XT2+ Series DISK RECORDER - Version 10.05 - Hardware Technical Reference Manual
Issue
10.05.A
EVS Broadcast Equipment SA – July 2011
37
Cable type
@ 1485 Mbps
RG59
45m / 148ft
RG6
90m / 484ft
RG11
120m / 393ft
Super HiQ
150m / 492ft
Fiber
80km(*)
(*) 80km/200km is the total length of the return path, i.e. the actual distances
between the 2 servers connected via the fiber link is half of this value, i.e. 40 km
@ 1485Mbps.
Note
When reclockers are used, the total delay induced by these reclockers
between 2 active servers on the network may not exceed 15μs.
2.7.4
S
TARTING
XN
ET
1.
When all above conditions are fulfilled, turn on the “Server” EVS video server
and start the Multicam application.
2.
Turn on all “Masters” and “Clients” EVS video servers, and make sure the
Multicam application is started on all of them. They should see the “Server” on
the network and they will connect automatically. Connection takes a few
seconds (usually between 2 and 5 sec) for each EVS video server.
2.7.5
XN
ET
P
ERFORMANCES
&
T
ROUBLESHOOTING
1.
With the default settings, 10 real-time transfers can be achieved on the
network with standard definition pictures in normal conditions, and 3 real-time
transfers with super motion pictures. Copy of a clip between 2 servers on the
network can be made up to 5 times faster than real time, depending on
network load.
With high definition pictures, these numbers are reduced to 3-4 real-time
transfers and copy clip 2 times faster than real time.
These performances are also limited by the disk bandwidth available from the
EVS server where the clips are stored. If the EVS server “owning” the clips is
doing multiple playbacks at the same time, freezes can occur on the remote
EVS server using those clips. Priority levels have been implemented to
maximize network bandwidth efficiency: PLAY requests have a higher priority
than SEARCH/BROWSE requests, which in turn have a higher priority than
COPY requests. Note that “Live” (E2E) mode on a remote record train has the
same priority level as a SEARCH/BROWSE request.
2.
Note that when working at 1485Mbps, only passive SDI routing equipment may
be used. The use of active SDI equipment should be avoided, because they
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