
Installing the SDI Video Matrix Switcher
2.Set DIP 7 OFF (enabling 
6.4.1.4Connecting to a DB9 COM Port without a 
To connect the PC’s DB9 COM port to a 
aNull-modem  adapter:
1.Connect a flat cable1 between the PC’s DB9 COM port and the 
2.Set DIP 7 ON (disabling 
6.4.1.5Connecting to a DB25 COM Port
To connect the PC’s DB25 COM port to a 
1.Connect the PC’s DB25 COM port to the 
Female DB25 (From PC)  | 
PIN 20 connected to PIN 6  | 
Connect PINS 4, 5 and 8 together  | 
Figure 7: Connecting a PC (with a 25-pin  connector) without a Null-modem  Adapter
2.Set DIP 7 ON (disabling 
1 Straight 
14  | KRAMER: SIMPLE CREATIVE TECHNOLOGY  | 
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