EX-LOGIC

The Tesira EX-LOGIC is a half-rack logic box for use with Tesira SERVER, SERVER-IO, TesiraFORTÉ, IDH-1 and OH-1 devices.

The EX-LOGIC provides both logic inputs and outputs and through software can be configured as a control interface. There are 16 total connections that can be used as inputs or outputs. Pins 1 – 12 are designated as Logic connections only and will accept contact closure or 5V TTL for input or provide contact closure or LED power (5V/10mA) for output. The remaining 4 connections can also be used for Logic connection or as variable voltage control input (e.g. interface to a potentiometer). Please review the Logic I/O Wiring section for more details.

The EX-LOGIC also provides a serial port for the output of command strings that can be used to send action commands to other equipment in the system.

Tesira EX-LOGIC expanders must be associated (proxied) via the equipment table to a SERVER, SERVER-IO, TesiraFORTÉ, IDH-1 and OH-1 device. EX-LOGIC Expanders have one Ethernet port and connect to the Tesira control network. Please refer to the Supported Network Topologies section for more details

• 16 total logic connections can be used as inputs or outputs
• 4 connections can also be used as voltage control inputs
• Inputs can control actions within the software including: presets, mutes, ducking, room combining, paging functions, and much more
• Outputs can trigger status relays, indicators or provide logic input to other controllable equipment
• Serial port for the output of command strings
• Connects to Tesira SERVER or SERVER-IO over AVB
• Powered by PoE
• Plug-in barrier strip connections
• Front panel LEDs for device status indications
• Half-rack chassis
• RoHS compliant and AES grounded

 

 

Grounding screw. This is for grounding the chassis of the expander

Ethernet data connection. Standard RJ-45 connector for connection with minimum CAT-5e cabling. The expander must receive PoE (IEEE 802.3af) power on this connector in order for proper operation. This connection is for sending and receiving control data with the Tesira server. The expander will not operate if it is not on a network that includes a Server-Class Tesira device.

Serial port. This is a command string output connection. The serial port can be configured by a Command String block in the software to send a string to another device. The serial port Baud rate is configurable  in Device Maintenance using the Remote Devices selection The Baud can be set to 300,1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200. Default is 115200.

Connections 1-12. These GPIO connections can be used as either inputs as outputs. They can be assigned to actions within the software using the Logic Input and Logic Output blocks.

Inputs

Each of the 12 GPIO pins can be configured individually by a logic input block as a logic input. By default the voltage on these pins is high causing a 1 on the input. A contact closure grounds the voltage causing a 0 on the input.

Outputs

Each of the 12 GPIO pins can be configured individually by a logic output block as a logic output. These GPIO pins can be driven high or low depending on the state of the logic output block. Due to hardware constraints, the internal pull-up resistor is always enabled.

Current Source.

When configured as logic output, each of the 16 GPIO pins can be configured to enable a current source capable of driving an LED. The current source is enabled depending on the state of the logic output block.

Connections 13 – 16. These connections can function in the same way as connections 1-12 for Digitial GPIO. But they can also be assigned as variable voltage input controls to allow analog control within the Tesira System by connection to a potentiometer.

GPIO pins 13 – 16 can be configured individually by the Control Voltage block in the software. If any one of these is configured for voltage control, then the logic expander will turn on the 5V potentiometer power.

Voltage Control Calibration

The 4 analog GPIO pins support voltage control calibration because a potentiometer may not be able to achieve the full range of voltage expected by the internal analog/digital convertors. When calibrated, the logic expander records both the minimum and maximum voltage levels caused by the potentiometer to achieve the full range of voltage.