Wiring The Contact/Tally Connectors - Extron electronics IN1804 Series User Manual

Wiring the Contact/Tally Connectors

On the rear panel of all three models are seven sets of contact and tally captive screw
connectors (labeled
and tally indicator devices. The
connector with a
devices connected to the tally (
These ports can be used for triggering and feedback associated with the selected input,
for contact-based input switching, and for other triggered functions such as CEC display
control or video mute. These ports are typically used with Extron Show Me cables or with
external equipment (such as the Extron CCB 30) to control IN1804 functions, depending on
which
Contact/Tally
Contact/Tally ports 1 through 4 control inputs in either of the following ways:
The input switches as the corresponding contact port is activated.
•
• The IN1804 sends an unsolicited SIS response out of its control ports when a contact
port is activated so that an external control system can trigger events. In this case,
the IN1804 uses a separate SIS command that an external control system can use to
activate individual IN1804 tally ports.
1
C T
Figure 12.
Contact/Tally ports 5 through 7 are configurable via PCS to enable functions such as
unit-specific commands, CEC actions, RS-232 commands, etc..)
To configure input switching via contact closure:
1. Connect contact input and tally output devices to one or more of the 2-pole Contact/
Tally connectors (see figure 12,
To enable input switching via contact closure, connect a push-button contact
•
closure input device to pins
To identify the currently selected input, connect an indicator device, such as an
•
LED, to tally output pin
When the input you are using is selected, the corresponding tally out pin shorts to
ground, which activates the connected indicator.
2. Attach the power wires for your connected contact indicator devices to the
connector (
3.
Press the button on the contact closure device to switch the connected input to the
output.
through ), each with two pins labeled
1 7
Contact/Tally
(ground) pin and a
G +V
) ports.
T
port is used.
2 3 4 5
C T C T C T C T
1 1
Contact/Tally Panel
) as desired:
1
(contact) and
C
of the same 3-pole connector.
T
).
2
IN1804 Scaling Presentation Switcher • Installation
and
C T
panel also contains a 2-pole captive screw
pin that provides +5 VDC power to the indicator
6 7
C T C T G V+
(ground).
G
, for contact closure
+V
20