Imagine Nexio AMP NX3601 HDX Hardware Installation And User's Manual page 20

20
Chapter 2
Hardware Installation
HD/SD SDI Video
The HD/SD SDI video ports use BNC connectors for HD-SDI and SDI video input and output.
The ports can be configured for SMPTE-259M SD or SMPTE-292M HD outputs.
Reference Ports
There are two reference ports on the NEXIO AMP back panel: REF IN and LOOP.
The reference ports use BNC connectors for analog bi-level or tri-level sync reference
connection. A valid reference signal must be applied to the REF IN port when the system is
configured for external sync.
Looping is not recommended. If you do loop, use caution when looping reference
throughout the server system. If one external cable fails or you replace a failed server, you
will compromise the reference signal to other servers in the looped chain. Always terminate
unused loop outputs with a 75terminatorprovided in the accessories bag).
Each frame should have its own reference for the source device to ensure correct timing.
Referencing the Server System to the House Time Clock (Optional)
Refer to the NXUSBTC User Guide for more information on referencing the NEXIO AMP
to your house time clock. When recording from a satellite feed, apply frame
synchronization hardware between the receiver and the video input channel. The
synchronization hardware and the NEXIO AMP mainframe must be connected to the house
reference.
In addition, refer to the NXUSBLTC User Guide for support of one LTC input per channel
and one LTC output per channel. NXUSBLTC is ideal if you want to preserve LTC input
timecode from VTRs and other sources, and if you are using downstream devices that
require an LTC input, such as closed caption insertors.
Do not use wire or plastic ties on cables as this can impede cable performance. Use soft
cable ties such as Velcro-based ties for wrapping cables.
The BNC connectors use coaxial cable to connect devices together. Use high-quality cable
suitable for HD-SDI with the NEXIO AMP frame, for example, the Belden 1694A cable.
Cable used for analog, SDI, and ASI devices may not be high enough quality.
AES Audio
The audio ports use HD-BNC connectors for AES/EBU digital audio input.
RECORD 1 (5) and RECORD 2 (6) — Supports a total of 4 pairs (8 channels) of digital
audio in per video channel. Each input connector supports one pair of AES/EBU digital
audio.
PLAY 1-4 — Supports a total of 4 pairs (8 channels) of digital audio out per video channel.
Each output connector supports one pair of AES/EBU digital audio.