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G
H
I
J
K
Wiring the CONTACT/TALLY Connectors
To make input selections via contact closure, short the C pin of each port momentarily to the
ground pin G. Input switching occurs immediately on contact, and not on the release.
To enable input switching via contact closure, connect a push-button contact closure device
to a CONTACT/TALLY connector (see figure 5,
To identify the currently selected input when the front panel buttons are not visible, connect
a device such as an LED to the CONTACT/TALLY connector and to the +V connector (see
figure 8,
Tally Out pin shorts to ground, activating the connected indicator.
LAN port — Connect the switcher to an active network using an Ethernet cable,
terminated with an RJ-45 connector. To wire this port, see
page 14).
NOTES:
If the UCS is set as a DHCP client and cannot locate a DHCP server, the port is
•
set to a local address link.
•
All Ethernet interfaces on the UCS 303 support up to 10/100/1000 Mbps
(Gigabit Ethernet).
Contact/Tally ports — (Optional) Wire a push-button switch or other contact closure
device to pin C (contact) and to the shared pin G (ground) of any of these 2-pole
Wiring the CONTACT/TALLY Connectors
connectors (see
information). These ports are configured via PCS or SIS commands.
CONTACT/TALLY
1
2
3
4
5
C T
C T
C T
C T
C T +V G
Figure 7.
CONTACT/TALLY Ports
Alternatively, wire a Show Me (SM) cable to the C and T pins (see
an SM Cable
on page 11 for connection instructions).
USB‑C input — Connect a USB-C source device, such as a laptop or PC, to this
USB-C connector.
This port can be configured in DP Alt Mode via SIS commands to convert USB-C
signals from the connected PC to DisplayPort. Once USB-C has been converted to DP,
four DisplayPort lanes are available. The DisplayPort signal is then converted to TMDS,
to be output on the HDMI output port.
This port provides up to 60 watts of power to the connected source. If the source
requires more than 60 watts, this port keeps the device functioning but does not charge
it. If the source is connected to an external power supply, the UCS 303 does not send
power to it.
DisplayPort input — Connect a DisplayPort source device to this DP connector. This
port supports up to 4k @ 60 Hz, 8-bit color with 4:4:4 chroma sampling.
HDMI input — Connect an HDMI (or DVI with appropriate adapters) video input source
to this female HDMI port for HDMI video with embedded audio.
NOTE: LockIt cable lacing brackets are provided to secure the HDMI cables to
the ports to reduce stress on the HDMI connectors and prevent signal loss
due to loose cable connections (see
Installation
on page 13).
on the next page). When the input being used is selected, the corresponding
3
Wiring the LAN Port
on page 10 for more
Connecting Using
LockIt HDMI Cable Lacing Bracket
, on page 9).
H
UCS 303 • Installation
on
10
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