Rane HAL1x Design Guide - Page 78

Digital Signal Processing, Zone Output, EXP3x Device

Page 78 highlights

CHAPTER 2: Introduction to the HAL System EXP3x Device The EXP3x is an 8-channel analog output & DSP Expansion Unit for the HAL1x expansion bus. It adds full support 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 64 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: l 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. l 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. l Soft-knee Compressor. 74

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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 64 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:
l
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.
l
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.
l
Soft-knee Compressor.
CHAPTER 2: Introduction to the HAL System
74