Adaptec 412R User Guide - Page 91
Faulty RS-232 cable, Improper setting.
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UPC - 760884139691
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Troubleshooting Symptom Nothing is displayed on the terminal emulator screen. Screen is updated, but will not respond to keystrokes. Probable Cause Faulty RS-232 cable connection or swapped transmit/ receive lines. Improper setting. Solution If the cable is properly connected on both ends, try a null modem adapter that will reverse the RS-232 transmit and receive signals. The need for a null modem adapter depends on both your enclosure and the RS-232 cable you are using. Disable hardware flow control on the terminal or terminal emulator. The controller supports XON/ XOFF flow control and works properly in most cases with no flow control. 6-7
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6-7
Troubleshooting
Nothing is
displayed on
the terminal
emulator
screen.
Faulty RS-232 cable
connection or
swapped transmit/
receive lines.
If the cable is properly
connected on both ends, try a
null modem
adapter that will
reverse the RS-232 transmit
and receive signals. The need
for a null modem adapter
depends on both your
enclosure and the RS-232
cable you are using.
Screen is
updated, but
will not
respond to
keystrokes.
Improper setting.
Disable hardware flow
control on the terminal or
terminal emulator. The
controller supports XON/
XOFF flow control and works
properly in most cases with
no flow control.
Symptom
Probable Cause
Solution