Rane HAL1x Design Guide - Page 57

CHAPTER 2: Introduction to the HAL System You should use only linear "B" taper potentiometers with the DR4 Analog Control inputs because the corresponding Level control is ratio-metric (that is ranges from 0 - 100% in a linear manner). The HAL system applies any necessary taper to level controls that participate in a link. For example all Level controls that affect audio gain in the HAL system have an audio taper applied. The Level controls in the Processing Workspace that correspond to each DR4 Analog Control input are readonly controls. This is because the physical hardware connected to the DR4 port (for example a potentiometer) determines the ratio-metric value of the Level control. The analog input signal is constant as long as the device is attached and remains in the same position. IR Remote Inputs The IR ports provide six toggle inputs to the HAL system and are ideal for linking to the wall toggle controls in a Room Combine block. This allows automatic room configuration changes to occur as moveable walls change positions in the physical room. These ports are read-only and are not configurable, but are intended for use with a Rane IR2 device. When the IR Remote is sensing infrared the wall is considered 'open' and the associated toggle control in the Control palette of the Processing Workspace is checked. Following are pictures of the rear and front panels of a DR4, along with descriptions of the hardware features. Rear Panel 1. The Power IEC jackconnects to AC line voltage, 100-240 VAC, 50/60 Hz. 2. Locate and Power LEDs The Locate LED flashes when toggled from within the Halogen software to help identify a specific DR4 - useful if you have more than one DR4 installed. The Power LED lights when adequate power is applied to the unit. 3. Digital Remote Port Use this port to connect the DR4 to the HAL or EXP1 via a standard shielded CAT 5e cable. You must use a standard Ethernet cable for this connection. You can connect the DR4 to either a DR port or a RAD port. LEDs: Provides information about the health of the shielded CAT 5e connection between the DR4 and HAL or EXP1. The Comm LED (on the top row) lights solidly if the DR's data communications pair is working properly. The Power LED (on the bottom row) lights solidly if a HAL or EXP1 is supplying adequate power to the DR port. 4. Analog Control Input Ports A DR4 Analog Control input port allows you to connect an analog potentiometer and use it as a read-only level control. 5. Logic Out Ports 53