3. Product Overview
MODEX-F15-OPTS, MODEX-F15-OPTM series – User's Manual
21
Settings for the Transmitter
▪
OPTS / OPTM output
: Set the Autoselect to
Enabled
. The Autoselect mode is Priority detect. The priorities
are the followings:
Source device
Input port
Priority
Blu-ray player
I1 (HDMI IN 1)
0
PC
I2 (HDMI IN 2)
1
Laptop
I3 (HDMI IN 3)
2
Priorities can be set in the Lightware Device Controller software, see in
for the transmitter and in
section for the receiver.
3.12. USB Interface (KVM Function)
MODEX extenders support HID-compliant (Human Interface Device) devices to transmit USB signal between
the source and sink devices. The MODEX transmitter connects to the controlled device (e.g. PC) and the
controlling devices (e.g. computer mouse, keyboard, touch panel) are connected to the MODEX receiver.
ATTENTION!
Only HID-compliant devices are supported by the extenders. Non-HID devices (USB sticks,
webcams, etc.) will not be working with the MODEX devices.
ATTENTION!
USB HUB devices are not supported by the MODEX extenders.
USB KVM function can be used in two different modes:
Transparent
and
Composite
mode
. The following
sections show the difference between the two modes:
Transparent Mode
Transparent mode is a simple USB data transmission between the extenders. The same data is transmitted
on the RX side which is received on the TX side. The content of the transmitted packets are unknown to the
Lightware infrastructure so
the data is not modified by any means during transmission.
Key Features:
▪
Supports all HID-compliant devices.
▪
Driver software for all connected USB devices has to be installed on the controlled computer. When
you switch a crosspoint between two sources, the connected mouse and keyboard will be detected
as a new hardware in the operating system.
▪
During normal operation any switching (more generally, any interruption in the signal path) results in
the ejection and re-enumeration of the USB device.
Composite Mode
The composite mode is an advanced data transmission method, recommended for most users. MODEX
devices use their own data packets during data transmission. Thus, the content of the transmitted packets
is known to the Lightware infrastructure.
Key Features:
▪
Supports the following HID-compliant devices: computer mouse, keyboard built with at most 107 keys
and/or specific multimedia keys.
▪
No driver software is required for the connected devices. The operating system uses the driver of the
MODEX to establish the connection for the USB devices.
▪
During normal operation any interruption in the signal path does not results in the ejection and re-
enumeration of the USB device. Thus, the computer will not be aware of any switching in the matrix.
INFO: You can find the related settings for Lightware Device Controller software in
USB KVM Function - Example
The Concept
Two computers connect to the 25G Hybrid Frame via MODEX transmitters. The PCs are the sink devices
for the USB KVM function. The MODEX receivers are connected to the output board of the matrix via fiber
optical cables. The keyboards and the mice are connected to the receivers at the end user side.
Composite USB mode
is recommended for most users when switching in the matrix is done frequently. The
advantages of this mode are:
▪
No driver installation is needed for the connected USB HID devices;
▪
The keyboard and mouse can be used immediately after input switching (there is no device re-
enumeration procedure in the operating system).
Transparent USB mode
is recommended for that users who want to use special USB HID devices with specific
buttons and/or do not switch between A/V input sources frequently. The advantages of this mode are:
▪
There is no restriction on the USB-HID devices if the driver is installed on the connected computer the
USB KVM signal is transmitted to the receiver without any limitation.
Keyboard & Mouse
MODEX receiver
PC
USB
FIBER OPTICAL
USB
25G Hybrid Frame
PC
USB
Keyboard & Mouse
MODEX receiver
USB
MODEX transmitter
MODEX transmitter
FIBER OPTICAL
FIBER OPTICAL
FIBER OPTICAL
