Comprehensive CVG-724xl - Manual (Page 17)

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6.2 Connecting a PC
You can connect a PC (or other controller) to the CVG-724xl via the RS-232
port for remote control, and for upgrading the firmware.
To connect a PC to a
CVG-724xl unit, using the Null-modem adapter
provided with the machine (recommended):
Connect the RS-232 DB9 rear panel port on the CVG-724xl unit to the
Null-modem adapter and connect the Null-modem adapter with a 9-wire flat
cable to the RS-232 DB9 port on your PC
To connect a PC to a CVG-724xl unit, without using a Null-modem adapter:
Connect the RS-232 DB9 port on your PC to the RS-232 DB9 rear panel port
on the CVG-724xl unit, forming a cross-connection 1 , as Figure 8 illustrates
DB9 (To Presentation
Switcher / Scaler)
DB9 (From PC)
Figure 8: Connecting the PC
1 Also known as a Null-modem connection