Enova DGX Audio Switching Boards
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Hardware Reference Manual – Enova DGX 100 Series Digital Media Switchers
Options for Wiring ASB Boards to Source and Destination Devices
Source and destination devices will require either balanced (differential) or unbalanced (single-ended) connections.
The figure below illustrates options for wiring between sources and input connectors and between output connectors and the
destinations. More than one option can be used in the same system.
NOTE: To minimize low frequency noise – for stereo audio signals using twisted pair wire, connect the shield (ground) only at one end
(recommend receiving end as shown in the top set of Source/Destination connections in the “Stereo Connections” diagram above).
Attaching the HSSI SMA (Sub-miniature version A) Cable
An HSSI (High-Speed Serial Interface) SMA cable (AMX part # 64-0051) is provided when Audio Switching Boards are either
purchased separately or with an enclosure. The HSSI cable attaches from the ASB input board to the ASB output board and is
required on all enclosure models except the Enova DGX 6400. Do not dispose of or break this cable as the Audio Switching Boards
will not function without it.
TIP: The command ?EXT_AUD sent to 5002:1:0 responds with TRUE when the cable is attached and the Audio Switching Boards are
fully functional.
To attach a cable to HSSI SMA connectors (Enova DGX 800/1600/3200 only):
1. Press and hold the cable connector face flat against the Audio Switching Input Board’s HSSI SMA connector face.
2. Using your free hand, push cable connector’s coupling nut forward until threads begin to engage between connectors.
IMPORTANT: The cable must not be allowed to rotate while tightening the coupling nut to avoid damage to the center conductor
(male pin) on the SMA connector.
3. Rotate coupling nut clockwise until resistance is felt, being careful to avoid cross-threading coupling nut.
4. Attach free-running end of cable to Audio Switching Output Board’s HSSI SMA connector per Steps 1-3.
5. Test/check the routing of Audio Switching Board signals (see page 150).
FIG. 89 Wiring from an Audio Switching Board to a variety of source and destination devices
FIG. 90 Audio Switching Boards with HSSI cable connected
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