1 connecting rs-232 devices, 2 connecting rs-485 devices, Connecting rs-232 devices – Kramer Electronics RC-78R User Manual
Page 11: Connecting rs-485 devices, Figure 2, Section
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RC-76R/RC-78R - Connecting the RC-76R/RC-78R
Figure 2: Connecting the RC-76R/RC-78R Room Controllers
4.1
Connecting RS-232 Devices
You can control up to two AV devices such as a projector or an RS-232 display by
connecting them to the RC-76R/RC-78R via their RS-232 connection.
To connect a device to the RC-76R/RC-78R via RS-232:
Using a straight cable, connect pin 2 to TX, pin 3 to RX and pin 5 to GND on
the RS-232 terminal block connector of the RC-76R/RC-78R
4.2
Connecting RS-485 Devices
You can control up to one AV device by connecting it to the RC-76R/RC-78R via
its RS-485 connection.
To connect a device to the RC-76R/RC-78R via RS-485:
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