Extron electronics DTP T SW4 HD 4K User Manual page 30

In the Contact/Tally Mode 3 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 S3 monitors the status of the CCR 2BLB through ports 5
and 6 to bring the volume up or down on the display.
Operation of Contact/Tally Mode 3:
The Extron Show Me cables switch the video for inputs 1 through 3 on the switcher.
•
• The Extron IPL Pro S3 is configured with GCP (see Control Processor Configuration for
Contact/Tally Modes) to monitor the switcher and send commands to bring the volume
up or down on the display via Extron RS-232 drivers.
• The CCR 2 BLB is wired to contact/tally ports 5 and 6 to control the volume on the
display. The IPL monitors the status of ports 5 and 6, via the RS-232 driver.
The CCR button is wired to contact/tally 5:
• VOL UP
When the contact pin of port 5 is closed (shorted), the IPL receives an
•
unsolicited response from the switcher via an RS-232 driver.
The IPL sends a command to the display via the DTP connection to bring the
•
Volume Up.
The tally pin lights the
•
The CCR button is wired to contact/tally 6:
• VOL DN
When the contact pin of port 6 is closed (shorted), the IPL receives an
•
unsolicited response from the switcher via an RS-232 driver.
The IPL sends a command to the display via the DTP connection to bring the
•
Volume Down.
The tally pin lights the
•
• In Mode 3, firmware controls the tally pins in ports 5 and 6, lighting the LED buttons.
LED.
VOL UP
LED.
VOL DN
DTP T SW4 HD 4K • Operation 22