Extron electronics SW HD 4K Series User Manual page 14

B
Input connectors — Connect HDMI video input sources to these female Type-A HDMI
connectors.
NOTE: LockIt cable lacing brackets are provided with the SW HD 4K units. These
brackets secure the HDMI cables to the rear panel connectors and reduce stress
on the connectors, preventing signal loss due to loose cable connections (see
LockIt Lacing Bracket Installation Guide
C
Output connector — Connect an HDMI display device to this female Type-A HDMI
connector.
The EDID information is read from the connected output device via this connector and
is written to memory on each input whenever the output device is connected to this
port and powered on.
NOTE: The EDID information is also read and stored whenever power is recycled to
the connected output device or when the output device is replaced.
D
Contact closure input and Tally output ports
Contact closure input — (Optional) Connect a push-button contact closure
•
device to a Contact In connector to enable input switching via contact closure (see
Wiring the Contact Closure Connectors
Tally Out port — (Optional) To identify the currently selected input when the
•
front panel buttons are not visible, connect a device such as an LED to the Tally
Out connector and +V connector. When the input you are using is selected, the
corresponding Tally Out pin (T) shorts to ground, activating the connected indicator
(see Wiring the Tally Out Port to Indicate the Input Selection
for more information).
E
+V connectors — These pins constantly output +5 VDC with 200 mA total (shared
between pins). Use these pins when power is needed for external Tally LEDs, such as
with Extron Show Me cables.
F
RS‑232 (3‑pole) and auto switching (2‑pole) connector — Use this 3-pole, 3.5 mm
captive screw connector for RS-232
communication with the switcher (including
firmware updates) and this 2-pole, 3.5 mm
captive screw connector to enable auto-input
switching.
To enable RS‑232 control, connect the Tx (transmit), Rx (receive) and G (ground)
•
pins to the serial port of your computer (see
Switching on page 9).
To enable auto‑input switching, short the two pins of this connector together.
•
In auto-input switch mode, the switcher automatically switches to the highest
numbered active input (see
on page 13).
on page 12 for more information).
RS-232 AUTO
Tx Rx G
Wiring for RS‑232 Control and Auto
Enabling Auto Switching (Optional)
SW HD 4K Series • Installation
on page 13
SW HD 4K Series Switcher
Rear Panel Remote Port
on page 12).
6