What is the basic termination for RS232 and RS422 Nortek cables?
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This article covers the standard termination for midlife instruments.
Different variations exist, but the transmit (Rx/Tx) and Power (Pwr/Gnd) lines are the same.
Opening the instrument and accessing the electronics or performing repairs requires technical understanding, please follow the manual and if you are unsure about anything have a technician perform the work or contact Nortek support.
RS232 setup:
D-sub (to converter) to 8 pin inline (wet end, at instrument):
End bell 8 pin to 9 pin Molex (first part inside instrument):
Harness 9 pin Molex to 24 pin Molex on mainboard:
RS422 setup:
D-sub (to converter) to 8 pin inline (wet end, at instrument):
End bell 8 pin to 9 pin Molex (first part inside instrument):
Harness 9 pin Molex to 24 pin Molex on mainboard:
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