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Contact/Tally Mode 0
Ports
Operations
1 through 4
•
Contact ports are controlled externally, using Show Me cables or other button switches.
•
When a specific contact port is shorted (closed), the DTP T SW4 HD 4K switches to the
associated video input.
•
Firmware controls the actions of the tally port.
•
The tally ports indicate the input currently selected using an LED connection, similar to the front
panel LED buttons.
•
When an input button is selected and the contact pin (C) is momentarily shorted, the tally
follows the associated contact port. The associated tally port latches closed, lighting the
button selected. All other tally ports latch open, causing their buttons to not light.
Channel and contact port status (open or closed ) for the input selected can be monitored via SIS
•
unsolicited responses.
5 and 6
Contact ports can be used for control with an external control processor configured to monitor
•
unsolicited responses.
Contact port status (opened or closed) can be monitored by SIS unsolicited responses sent from
•
the switcher to the control processor via the RS-232 port.
•
Tally ports are controlled via SIS commands (see
An external control processor provides control of the tally ports through the RS-232 port of the
•
switcher via SIS commands, and monitors the status of the contact ports.
Extron
DTP T SW4 HD 4K
Extron
HDMI Show Me Cables
Figure 8.
In the Contact/Tally Mode 0 diagram, ports 1 through 4 are associated with inputs 1 through
4, so the video input can be selected using the Extron Show Me cables or the input buttons
on the front panel. The IPL Pro S1 monitors the status of ports 5 and 6 to control the
display.
Contact
Closure
and Tally
Extron
n
OCS 100C
00C
CONTACT/TALLY
1
2
3
4
5
6
C
T
C
T
C
T
C
G
T
+V
C
G
T
+V
C
G
T
+V
POWER
1
2
3
4
12V
- - A MAX
INPUTS
TeamWork System
The DTP T SW4 HD 4K PLUS in Contact/Tally Mode 0
Tally Ports
on page 44).
HDMI
HDMI OUT
Display
Extron
DTP R HWP 4K 331 D
Receiver
CATx Cable
(up to 230'
(70 m)
DTP T SW4 HD 4K
REMOTE
OVER TP
SIG
LINK
POWER
HDBT
RS-232
IR
RS-232 AUTO
12V
0.2A MAX
DTP
Tx
Rx
G
Tx
Rx
Tx
Rx
G
OUT
Extron
IPL Pro S1
RS-232
DTP T SW4 HD 4K • Operation
Ethernet Display
Control
IPL PRO S1
COM
LAN / PoE
Tx Rx
G
RTS CTS
Ethernet/PoE
LAN
16
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