Relay Interface; Usb Interface; Usb Control; Usb 2.0 Interface - Lightware MMX8x4-HT420M User Manual

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5. Device Concept
5.13. Relay Interface
INFO:
Only the MMX8x4-HT420M model has relay connector.
The matrix contains four relay modules which can be accessed by an 8-pole Phoenix connector. The relays
can be controlled by Lightware protocol commands (LW3) and Event manager actions can be assigned to
the port.

ATTENTION! The device built with normally open (N.O.) contact relays which means when the unit is not
powered (DC plug is disconnected), the relays will open.
Application of Relays - Example
The Concept
Projection screen is rolled down by relay when the audio signal is present on the microphone input of the
Matrix. When HDMI signal is not present on the input, the projection screen is rolled up.
Settings
Create an event in Event manager: when signal is present on the microphone input (I9) then set Relay 1. (P1)
to be closed.
Condition (on Advanced tab):
/MEDIA/AUDIO/I9.IndicatorNominal=true
Action (on Wizard tab):
Category: Relay, Expression: Close contact on relay, Port: P1
Step 3. Create another event when signal is not present on Input 5 (I5)then set the Relay 2. (P2) to be closed.
The lecturer can roll down the projection screen by talking to the microphone. It means, the audio signal is
present on the microphone input (signal peak indicator becomes true), the Relay 1. (P1) closes.
When the presentation is finished, signal ceases on the HDMI input, so the Relay 2. (P2) closes and projection
screen returns to its enclosure.
See the LDC settings for Relay port in the
settings in the Macros section.
Relay Tab section. See also the details about the Event Manager
Applied firmware package: v1.3.0 | LDC software: v2.4.2
MMX8x4-HT series – User's Manual
5.14. USB Interface
5.14.1. USB Control
All models can be controlled over front panel USB port (mini B-type connector). This interface supports LW3
protocol. The interface can be used to establish a connection to Lightware Device Controller software.
5.14.2. USB 2.0 Interface
DIFFERENCE:
MMX8x8-HDMI-4K-A-USB20 matrix can transmit the USB 2.0 data via USB type-A and USB
type-B connectors. In the other models, USB control operates locally, USB data is not transmitted.

INFO: The first USB-A port can send 1000mA output power and the capacity of the other three are 500mA.
Host detection
One host is available from the four in the same time. MMX8x8-HDMI-4K-A-USB20 gives a feedback about
the connected hosts. When the 5V is detected on USB Vbus, the Host5VSensePC property becomes true (this
can be a trigger or condition in the Event Manager).
Enable the Power Switch Delay
After switching between the hosts, some connected USB devices need reset to operate properly. Enable
power switch delay function allows users to reset the connected USB device within the software without the
need to physically unplug/re-plug a device. It turns off the 5V power of all the devices for 2s, and this forces
them to restart.
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