Cascading Hubs
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UDM-0808-SIG, UDM-RX02N and UDM-ABB-8-SIG Operation /Reference Guide
Cascading Hubs
Overview
The UDM-0808-SIG features Cascade In/Out connectors which allow one UDM-0808-SIG to pass its inputs
to another UDM-0808-SIG. This cascade port can also be used to connect the UDM-0808-SIG to the
UDM-ABB-8-SIG Audio Breakout Box.
The UDM-0808-SIG supports up to eight inputs (A-H), and up to eight outputs (UDM Ports 1-8). Adding up
to three more UDM-0808-SIG Hubs is possible via the two sets of CASCADE ports (In/Out 1-4, In/Out 5-8),
and optional UDM Cascade Cables (FG-1402-71).
As indicated in FIG. 10 on page 10, the top set allows you to cascade Inputs E-H, while the bottom set is used
for cascading Inputs A-D.
Cascading UDM-0808-SIG Hubs requires physically connecting the Hubs via the CASCADE IN and
CASCADE OUT ports, as well as configuring the Source Hub and each Target Hub.
Up to four UDM-0808-SIG Hubs (one Source Hub and up to three Target Hubs) can be cascaded
together.
Using these connectors does not reduce the number of available user ports.
Cascading can increase the overall size of the matrix from 8x8 to 8x32.
Inputs are only cascaded down the chain (not bi-directional).
Each Hub can be assigned as either the Source Hub or as a Target Hub via NetLinx Send
Commands ("MMON" and "MMOFF" - see page 83 for details).
Cascade In/Out Connectors
The CASCADE IN and OUT connectors on the UDM-0808-SIG require a UDM Cascade Cable
(FG-1402-71 - not included).
FIG. 66
Cascade 5-8, 1-4 Ports
CASCADE
IN
ports 5-8: from Source Hub’s CASCADE OUT 5-8 port
CASCADE
OUT
ports 5-8: to Target Hub’s CASCADE IN 5-8 port
CASCADE
IN
ports 1-4: from Source Hub’s CASCADE OUT 1-4 port
CASCADE
OUT
ports 1-4: to Target Hub’s CASCADE IN 1-4 port
Cascaded Hubs must be stacked on top of each other, to ensure that the 6"
(15.24cm) UDM Cascade Cable is able to reach from Hub to Hub without strain.
