QSC Q-SYS Core 110f Manuals

™ Hardware User Guide Q-SYS Core 110f Q-SYS Cinema Core 110c TD-001541-01-B *TD-001541-01*

Technical Notes Q-SYS Core 110f Rev. B, 14 November 2017 Using the GPIO inputs and outputs The Q-SYS Core 110f features General Purpose Input/Output (GPIO) connections that allow the core to interface with miscellaneous outside devices, such as LED indicators, switches, relays, and potentiometers, and with custom or third- party controls. The GPIO allotment on the Core 110f totals 16 inputs and 16 outputs. Use Q-SYS Designer to select the type of input or output and configure it. Each GPIO input and output is independent of the others. Flanking each row of eight GPIO inputs and outputs is a +12 V DC terminal (up to 200 mA available on each, protected by a self-resetting fuse) and a ground or reference terminal. This can be used for potentiomenters (input), relay coils and LEDs (output), and other uses. GPIO configurations These are the various ways that GPIO inputs and outputs can be configured. Type Conceptual schematic Control pins Notes Input Digital Input (TTL 3.3 V)—The input is fed by a 3.3 V TTL digital source. The two states are logic high (1) and logic low (0). None Contact Closure Input—This setting enables an in- ternal pull-up resistor, allowing actuation by a contact closure to ground. This can be through a switch, set of relay contacts, etc. None Internal pull-up resistor to +12 V. When contacts are closed, GPIO In = 0 V; when open, GPIO In = +12 V. Potentiometer (10 kΩ, 12 V)—In this setting, the external potentiometer acts as a variable voltage divider. The GPIO input reads the voltage delivered. The ground terminal is the reference. The GPIO interprets the voltage as a proprtion between the minimum and maximum pot positions, with better resolution and accuracy than the two-wire potentiometer configura- tion offers. This configuration requires calibration of the pot’s minimum and maximum positions. Calibrate Maximum Calibrate Minimum Maximum Position Minimum Position Calibrate the minimum and maximum positions of the pot.

18 November 2015 Technical Notes Q-SYS Core 110f USB Endpoint functions in Core 110f: Soundcard or Speakerphone Overview A USB Type-B port on the Core 110f allows you to connect it to a PC, through a USB Type-A to Type-B cable, and have it serve as a soundcard, a speakerphone, or both. (Do not try to use the Core’s USB Type-A host ports for this purpose.) Configuration Before you can use the Core 110f’s USB endpoint functions, though, you must configure them in the Q-SYS design. In Q-SYS Designer, open the design. Click on the Core 110f component in the Inventory Panel. Under Core Properties, enter the number of endpoints you wish to have in the box USB Endpoint Count (up to four USB endpoints). Repeat the following procedures for each endpoint. Configure each endpoint as either a speakerphone or a soundcard; a speakerphone is typically used for teleconferencing, whille a soundcard is typically used for media playback, presentations, or multitrack recording. You can have soundcard and speakerphone endpoints simulta- neously in the same design. To configure a soundcard endpoint 1. In the Type list, select Soundcard (for multitrack recording or playing back audio through or from the PC). See Figure 1. 2. Configure these additional parameters: • In the Input Mode list, click Line (for playing audio from streaming apps and sites such as Pandora, Spotify, et al, or for multi-track recording, for example) or Speaker (for multi-channel playback, for example). The term “Input” is from the Core’s perspective, and it represents audio output from the PC. If you selected Line, configure these additional parameters: • In the Input Count list, click 0, 2, 4, 6, or 8. By default, Windows can handle only the first two channels. For more than two channels, install Figure 1. In this example, End- point 1 is configured as a 5.1 surround audio input for the Core; Endpoint 2 is configured as two input channels and two output channels.