Hitachi VZ-HD4000A User Manual

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Using RS-422 terminal 
block connectors
1  Insert the wire (AWG 28-18) into 
the hole you wish to connect 
and tighten the corresponding 
screw with a slotted screwdriver.
Slotted screwdriver
Wire (AWG 28-18)
2  Plug the RS-422 terminal block 
connector into the RS-422 
terminal.
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3 4
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7 8
9
RS-422
When Unplugging 
Connector Plugs
Grasp both ends of the RS-422 
terminal block connector plug and 
unplug it as shown in the diagram.
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3 4
5 6
7 8
9
RS-422
Caution
Ÿ
In order to stabilize the voltage 
level of signals, cross ground 
them.
Ÿ
When connecting via RS-422, 
connections via RS-232C 
cannot be made.