Miranda NV8144, Руководство пользователя

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76 Rev 2.2 • 27 Mar 10
2. Installation
Making Video Reference Connections
AES reference connection requires a stable signal source set at 48 kHz. For a detailed description of
the AES reference connections, see AES Reference Connections on page 35.
How to Make Connections to the AES Reference
Locate the AES reference connections on the rear of the router, as shown in Figure 2-20. AES ref-
erence connections are labeled ‘AES REF 1’ and ‘AES REF 2’.
Figure 2-20. AES Reference Connection (Rear View)
5 Connect to the ‘AES REF1’ connection using a BNC connector and 75
Ω
cable.
6 Connect the other end of the cable to a stable source of 48kHz AES audio signals.
7 For redundancy, connect to the ‘AES REF 2’ connection as described in Step 2.
8 Connect the other end of the cable to a stable source of 48 kHz AES audio signals.
Making Video Reference Connections
Routers in the NV8500 family provide timing reference connections for analog video signals,
labeled ‘VIDEO REF 1’ and ‘VIDEO REF 2’. The control card uses these references to perform
takes at the proper point in time (per SMPTE RP168), determining the router’s video frame switch
points. The video reference connections require a stable source of PAL, NTSC or Tri-level sync.
Both video reference connections use 75
Ω
BNC connectors and coaxial cable. For a detailed
description of the video reference connections, see Video Reference on page 35.
Each ‘VIDEO REF’ connection can use the same reference source (redundant) or two unique refer-
ence sources (dual). For more information, see
Redundant and Dual References on page 36.
If a video reference is present, signals switch at the defined frame and line switch points. If a video
reference is not present, the router performs takes using an internally generated reference signal and
the control card displays a lit red LED. (See
Indicator LEDs on page 101.) Switchpoint configura-
tion is managed through the UniConfig application. For detailed instructions, see the UniConfig
User’s Guide .
AES Reference
Connectors