
SETUP AND OPERATION SECTION 2
Page 2-7
5. Receiving a sign on message and can't enter
characters.
Check U9, pin 14 for at least -6 volts with the serial
cable connected to the PC . W hen it is near 0 volts,
the terminal or PC' s Txd line is not connected.
When you press a character on the terminal or PC,
you should see the voltage go positive on the
oscilloscope.
If all of this fails, call technical sup port listed in
SECTION 1.
Kommentare zu diesen Handbüchern