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iDP-3410 User’s Manual
(4) Signal polarity
RS-232C
•Mark = Logic "1" (-3 V ∼ -12 V)
•Space = Logic "0" (+3 V ∼ +12 V)
(5) Received data (RXD signal)
RS-232C
• Mark = 1
• Space = 0
(6) Reception control (DTR signal)
RS-232C
•Mark : Data transfer disabled
•Space : Data transfer enabled