GPIO In (Core 110f, 110c)

The General Purpose Input Output (GPIO) is used to integrate Q-SYS with custom or third-party controls. Using the GPIO Output you can control external hardware. With the GPIO Input, you can control certain aspects of Q-SYS using external hardware.

Note: Use the GPIO property (in Core Properties) to toggle the GPIO In and Out components in the Inventory tree, depending on your Core 110 Series model. GPIO connections are not applicable to the Core 110f v2.

The GPIO pins in Q-SYS Designer are representative of the pins on the color-coded (black) Euro-style connector on the rear panel of the Core. The numbers stamped on the rear panel relate to the GPIO pins in Q-SYS Designer.

Flanking each row of eight GPIO inputs and outputs is a +12V DC terminal and a ground or reference terminal that can be used for potentiometers (input), relay coils and LEDs (output), and other uses. The current limit for the +12V pins is 200mA.

GPIO In Core Properties

Name

The Name may contain ASCII letters 'a' through 'z' (case-insensitive), the digits '0' through '9', and the hyphen. Names cannot begin or end with a hyphen. No other symbols, punctuation characters, or blank spaces are permitted.

Note: This name must match the Hostname for the device as defined in Core Manager or Peripheral Manager.

Location

User-defined name that groups the component with other components in the same physical location – for example, "Rack 1" – or in the same organizational scheme.

Is Network Redundant

Indicates if the amplifier is connected to redundant networks.

GPIO

(Core 110f and Core 110c models only)

  • For existing designs that use the Core 110f or Core 110c for processing, the GPIO property defaults to Enabled. If you are swapping the unit for a Core 110f v2 model (which does not feature GPIO inputs and outputs), change this property to Disabled. This automatically changes the Clocking > Clock Source property to 'Internal'.
  • For new designs, this property defaults to Disabled. If you are using a Core 110f that includes GPIO inputs and outputs or a Core 110c, set this property to Enabled, which will expose GPIO In and GPIO Out components in the Inventory tree.

External USB Audio

When enabled, you can connect an external audio device to the USB input and route audio to and from that device. See External USB Audio Device In and External USB Audio Device Out.

Telephony

Telephone Country

Select the country in which the telephone service resides.

Telephone Tone Output

When 'Yes' is selected, the Ring, Entry, Exit, and DTMF tones are fed to a separate output channel (Tone Output) on the POTS In component. These tones can now be routed independent of the voice audio.

Network Receive Buffer

Adds extra buffer time to the default maximum of 1 ms.

Additional Network Receive Buffer time is useful in (rare) cases where the network latency through the network exceeds the default maximum. Additional network latency my be introduced by sub-optimal QoS functionality, some layer-3 routing implementations, long distances or large networks.

Because the specified additional latency is added both to transfers from IO Frames to the Core and from the Core to IO Frames, the additional system latency is twice the amount of additional receive buffer selected. Total system latency based on this setting is calculated and displayed immediately below the Network Receive Buffer property.

Clocking

Clock Source

The GPIO selection requires an external TTL level word clock or a GPS connection: pin 1 is signal, ground in is indicated by the ground symbol on either end of the connector. When you select GPIO In Pin 1 as the clock source, GPIO Pin 1 is no longer displayed. The clock source should be connected to pin 1 of the GPIO connector.

GPIO 1 -16 Type

GPIO Type 1-16

  • Digital Input (TTL 3.3V)
  • Contact Closure Input
  • Potentiometer (10k ohm, 12V)
  • Potentiometer (2-wire)
  • Analog Input (0-24V, Low z)
  • Raw

USB Bridging – Common Properties

These properties appear based on the USB bridging capabilities of the Q-SYS device. Refer to the USB Video Bridge and USB Audio Bridge topics to see what Q-SYS Core processors and peripherals support USB bridging.

USB Bridge Name

User-defined name given to the USB Bridge, from 1 to 24 characters. The Name may contain ASCII letters 'a' through 'z' (case-insensitive), the digits '0' through '9', and the hyphen. Names cannot begin or end with a hyphen. No other symbols, punctuation characters, or blank spaces are permitted.

Zoom Compatibility

If you are using the HID Conferencing component to control a remote computer running Zoom, set this property to 'Enabled.' Otherwise, when controlling another conferencing app such as Skype for Business, set to 'Disabled' (default). When this property is enabled, the USB Bridge Name property is disabled, and the USB Bridge automatically uses the name of the device for compatibility with Zoom's allowed device list – for example, "Q-SYS Core 110f" or "Q-SYS NV-32-H".

Tip: Enabling Zoom Compatibility may improve the user experience with macOS conferencing solutions.

USB Video Bridge

Enable the USB Video Bridge to bridge Q-SYS Mediacast streams to USB, enabling you to view Mediacast video on a connected computer. This exposes the USB Video Bridge component in the I/O-USB Bridge Inventory tree. To see what Properties are available when the USB Video Bridge is enabled, see USB Video Bridge.

USB Audio Bridge

Provides the capability of passing audio via USB. When this is set to anything except 'Disabled', you can drag the Speakerphone and/or Sound Card components from the device's Inventory tree into your design. To see what Properties are available when the USB Audio Bridge is enabled, see USB Audio Bridge.

  • Disabled: (Default)
  • Speakerphone (1 x 1): Provides a speakerphone with an input and output component, each having 1 audio connection.
  • Sound Card (2 x 2): Provides a sound card with an input and output component, each having two (stereo) audio connections.
  • Speakerphone and Sound Card: Provides one speakerphone and one sound card with the same capabilities as described above.
  • Advanced – If supported, allows up to any combination of four speakerphone / sound cards.

Graphic Properties

Label

Use the Label property to change the name of the component in the schematic. The Label property defaults to the component name. To learn more about renaming schematic elements, see Organizing Your Design.

Position

The coordinates reference a specific place in the schematic - for example,"100,100" (horizontal, vertical). 0,0 is the upper left corner of the schematic.

Fill

Sets the fill color of the component in the schematic.

Script Access Properties

Code Name

Displays the currently assign name for control access. You can use the auto-assigned name or customize it. Q-SYS will automatically check all Code Names in the design to ensure name is unique.

Script Access

Defines whether the component will be accessible by script and/or externally, or not at all. Choices include All, External, None (default), and Script.

Tip: Use Script Programmer Mode to quickly view the Script Access setting directly on the component in the design schematic without the need to disconnect from the Q-SYS Core processor.

The following table describes the controls available in the GPIO Input Control Panel.

Digital Input (LED) 

This LED illuminates when there is a digital input on a GPIO pin. Each of the following Types of input has an LED to indicate a digital input is present:

  • Digital Input (+3.3VDC)
  • Contact Closure – When this Type is selected, the pin has approximately 9 to 10VDC present when the contact is open (or nothing is connected) and the LED is off. When the contact is closed (pin is shorted to ground), the LED is on.
  • Raw

Analog Input (Knob)

The analog input knob is provided when one of two Input Types is selected.

  • Analog – allows a low impedance, 0 – 24VDC signal input
  • Raw

Both input voltages are displayed on a read-only knob control.

Potentiometer

The Potentiometer knob follows the position of the physical potentiometer connected to the GPIO pin. To calibrate Q‑Sys to the potentiometer:

  1. Turn the physical potentiometer to its minimum position.
  2. Click the Calibrate Min button. A value displays in the Min Position field.
  3. Turn the physical potentiometer to its maximum position.
  4. Click the Calibrate Max button. A value displays in the Max Position field.

If you know the values for Min Position and/or Max Position, you can enter them manually.

Pullup Enable

Provides a 5.11K Pullup resistor to +12VDC on the input pin when the Type is Raw.

The available Control Pins depend on settings in Properties. Each of the following Control Pins are available on all GPIO Input pins.

Pin Name

Value

String

Position

Pins Available

Digital Input
(LED)

0

1

false

true

0

1

Output

Contact Closure
(LED)

0

1

false

true

0

1

Output

Potentiometer

0 to 1.00

0 to 1.00

0 to 1.00

Output

Minimum Position 1

0 to 1.00

0 to 1.00

0 to 1.00

Input / Output

Minimum Calibrate 1

0

1

false

true

0

1

Input / Output

Maximum Position 1

0 to 1.00

0 to 1.00

0 to 1.00

Input / Output

Maximum Calibrate 1

0

1

false

true

0

1

Input / Output

Analog Input

(Knob)

 0 to 24 nn.nnnV 0 to 1.00 Output

Raw

 

 

 

 

Digital Input

(LED)

0

1

false

true

0

1

Output

Analog Input

(Knob)

 0 to 24 nn.nnnV 0 to 1.00 Output

Pullup Enable

0

1

false

true

0

1

Output
1. These control pins are selectable in the Control Pins list at the bottom of the GPIO selections. You must select the Type (Potentiometer or Raw) to make these Control Pins accessible.