Control Cabling
USB connections
Connect a host computer to the USB mini-B port on the receiver (see
figure
8,
A
Transmitter connections for input selection and indication
The remote control contact input ports (see
ports (see
to select the corresponding input. Connect a tally output pin and tally voltage pin to light an
LED to indicate that the corresponding input is selected.
NOTES:
Only the HCT 103 has tally output ports.
•
Input selection and tally feedback behavior cannot be changed: the contact closure
•
and tally ports cannot be configured using GC software.
Input selection via contact closure has the same priority as input selection from the
•
front panel.
When an input is selected, the corresponding tally port is set to logic low, allowing
•
voltage to pass through that tally output pin, providing power for an indicator LED. If
the tally port is connected to an Extron Show Me cable, the LED in the cable lights.
Show Me cables are available only as part of an Extron TeamWork kit.
•
Follow the wiring instructions for either an Extron HDMI Show Me cable or an external push-
button keypad, as appropriate.
Extron HDMI Show Me cable
For each Extron Show Me cable, connect the red wire from
the cable pigtail to the associated pin of the contact closure
input connector on the HCT 103 transmitter and connect the
black pigtail wire to the associated pin on the tally connector
(see the system diagram in
diagram at right).
Extron Show Me Cable
Input
(To Source
Device)
NOTES:
For Show Me cables, the ground pin (drain wire)
•
connection is optional.
Do not connect Show Me cables to the +V pin of the Tally port. The source device
•
provides the +5 VDC supply voltage needed to illuminate the Share button. Some
sources (such as mobile devices) do not provide sufficient voltage to light the button.
Digital (HDMI) Show Me cables support embedded audio and CEC signals. Analog
•
Show Me cables do not.
on page 16) for device configuration with PCS software.
J
) are typically used together. Momentarily short a contact input pin to ground
figure 1
on page 4 and see the
Share
Button
Three-Conductor
Pigtail for Contact
Closure and Tally
HC 400 Series • Hardware Features and Installation
figure 7
figure 7
and
figure
8,
I
) and tally output
Red,
Contact
Output
(To Transmitter
or Receiver)
and
REMOTE
CONTACT
TALLY
HCT 103
Rear
Panel
2
3
4
G
2
3
4 +V
Black,
Tally
Show Me
Cables
Input 4
Input 2
21
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