Installation guide

EXP3x Device

The EXP3x is an 8-channel analog output &DSP Expansion Unit for the HAL1x expansion bus. It adds full sup-

port for eight zones of Distributed Background Music and Paging, including 2 RAD ports, 6 DR ports and all of

the required Digital Signal Processing. The EXP3x provides power to the RADs and DRs while HAL provides a

conduit of control. As soon as the EXP3x is connected, its audio outputs, RAD and DR ports become visible and

available for configuration from within the Halogen software.

As with all the HAL1xExpansion Units, the EXP3x connects to HAL via a shielded CAT5e with a cable length

maximum of 100 meters (300 feet).

NOTE: The Expansion Bus is a daisy-chain topology supporting up to 32 expansion devices. See "HAL1x

Expansion Units" on page 58 for details on latency, cable type and cable length.

Digital Signal Processing

Each EXP3x output supports one of two selectable fixed configurations: A Zone Output configuration and a Line

Output configuration. The only difference is that the Line Output omits the Zone Processor and Emergency Zone

blocks from the processing chain. The reason for including two output configurations is some applications don't

require Zone Processing, which provides support for Paging and the Distributed Program Bus. An example is using

the EXP3x for analog Line Outputs in a Room Combine configuration, where the Room Combine block in the

HAL1x already provides support for Paging and the Distributed Program Bus.

The following sections describe each of the output configurations:

Zone Output

The EXP3x provides all of the Digital Signal Processing required to support eight zones. Each zone output

includes the following processing blocks:

Zone Processor with support for up to 32 Distributed Program Bus Sources, 32 Paging Sources and 32

AUX Inputs per zone.

NOTE: This block is identical in function and use to the Zone Processor in the HAL.

Emergency Zone for support of an emergency page source.

NOTE: This block is identical in function and use to the Emergency Zone processing block in the

HAL.

Soft-knee Compressor.

HAL SYSTEM DESIGN GUIDE