For serially connected optical probes (which do not have PS2 pigtail power) like the UNICOM III. The correct settings would be:
In ION setup> >Serial> Settings the RTS or DTS needs to be set to "Force ON".
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For serially connected optical probes (which do not have PS2 pigtail power) like the UNICOM III. The correct settings would be:
In ION setup> >Serial> Settings the RTS or DTS needs to be set to "Force ON".