KRAMER: SIMPLE CREATIVE TECHNOLOGY
Installing the Audio-Video Matrix Switcher
16
6.4.1.5 PC DB25 COM Port Connection to a Unit
To connect the PC’s DB25 COM port to a unit:
1. Connect the PC’s DB25 COM port to the RS-232 IN DB9 port on the
unit, as Figure 10 illustrates:
Female DB25 (From PC)
PIN 20 connected to PIN 6
Connect PINS 4, 5 and 8 together
Figure 10: Connecting a PC (with a 25-pin connector) without a Null-modem Adapter
2.
Set DIP 7 ON
(disabling Null-modem adapter use
1
6.4.2
Connecting the RS-485 Control Interface
) on the unit.
Figure 11 defines the RS-485 connector PINOUT for external RS-485
control. The RS-485 connector is also used (if required) for vertical sync:
VERT
ICA
L
SYNC
-
(F
OR RS
-485)
+ (F
OR RS
-485)
G
RO
UND
Figure 11: RS-485 Connector PINOUT
1 Straight one-to-one uncrossed connections with at least the 3 wires pins # 2, # 3 and # 5
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