CHAPTER 2: Hardware Component DetailsThis chapter provides details about the HAL System hardware devices that you'll be installing.Overview of HAL DevicesThe HAL host device (which is referred to as HAL throughout this guide) is the brain that controls the entireHAL System. It can connect to a variety of other hardware (or slave devices) such as analog equipment, RADs,DRs, and EXPs. Inside the HAL hardware is a DSP audio processing engine and a host controller that controlsDSP operations and manages control links, presets, and more. There is only one HAL device per system. You can-not connect one HAL to another.NOTE FOR DRAG NET USERS: The DSP processing engine in the HAL1 device is four times more powerfulthan the RPM88, the HAL2 has twice the power as the RPM88, and the HAL3, HAL3s, and HAL4 havethe same amount of DSP processing power as the RPM88.Other FunctionalityIn addition to hosting other hardware devices and managing system operations, HAL also does the following:l Provides power to connected RADs, and DRsl Stores configuration settings and compatible firmware for itself and for each connected RAD, DR, and EXPl Provides a connection to an Ethernet network (for control of HAL and the connected devices)l Displays various status indicators (LEDs) providing information about the health of the systemAvailable HAL ModelsThe following HAL models are currently available. For the most current list of HAL models, see the Rane website.HAL1xThe device connections that are possible on a HAL1x are as follows:l 4 Remote Audio Devices (RADs)l 8 Digital Remotes (DRs)—Can add up to 4 more by plugging them into the RAD portsl 1–32 Expansion Unit Devices (EXPs) (CAT 5e Expansion Bus)l 8 Mic/Line Inputsl 8 Line Outputsl 4 Logic Inputsl 2 Relay OutputsHAL2The device connections that are possible on a HAL2 are as follows:l 4 Remote Audio Devices (RADs)l 4 Digital Remotes (DRs)—Can add up to 4 more by plugging them into the RAD ports13