Over Dtp2 Rs-232 And Ir Control - Extron electronics DTP2 R 212 Series User Manual

Pin 1 is for 10 VCD reference voltage output (see
•
• Pin 2 (C) has two functions:
Volume control: it can be used as a variable voltage input between 0 and 10 VDC,
•
with 0 V giving full attenuation and 10 V giving maximum volume.
• Mute: it can be used for remote control muting. Sound is muted while this pin is
shorted to ground.
• Pin 3 is for the ground connection.
NOTE: All nominal levels are at ±10%.
Over DTP2 RS‑232 and IR Control
Use a female 9‑pin D connector to bare wire RS‑232 cable or a universal control cable
(UC50' or UC100') to connect your computer or control system to the Over DTP2 RS-232
and IR port (see figure 12, to wire this 5‑pole connector).
1. Wire the unterminated end of the RS‑232 cable to the first three pins on the 5‑pole
captive screw connector, starting at the left:
a. Connect the transmit wire from the RS‑232 device into the Rx pin on the switcher.
b. Connect the receive wire from the RS‑232 device into the Tx pin on the switcher.
c. Connect the ground wire from the RS‑232 device into the G pin on the switcher.
2. Wire the unterminated end of the IR cable to the third, fourth, and fifth pins of the
5‑pole captive screw connector:
a. Connect the transmit wire from the IR device into the Rx pin on the switcher.
b.
Connect the receive wire from the IR device into the Tx pin on the switcher.
c.
Connect the ground wire from the IR device into the G pin on the switcher.
3. Plug the 5‑pole connector into the Over DTP2 port on the rear panel of the switcher.
4. Connect the other end of the cable to the appropriate computer or control system port.
Tx/Rx
Pins
Figure 12.
NOTES:
• The RS‑232 and IR connectors share the ground pole and the data from both can
be transmitted simultaneously.
• The IR Tx and Rx line pairs and the RS‑232 Tx and Rx line pairs must each cross
once between their connectors and the source or destination.
•
The length and preparation of exposed wires is important (see the wiring
ATTENTION:
OVER DTP2 RS-232/IR
OVER DTP2 RS‑232 and IR Control Pin Assignments
on page 12 for details).
figure 11 on the previous page).
IR Device
Tx Rx Gnd
Tx Rx Gnd
RS-232 Device
DTP2 R 212 Series • Installation 17