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7.
After selecting the appropriate menu items for each setting, click the “
Apply
”
button and then the “
OK
” button. A Hyper Terminal window will appear. See
figure #21
.
Figure #21
8.
You should be able to type characters on the Hyper Terminal window. These
characters should echo back to the window. If you type characters and nothing
appears in the Hyper Terminal window perform the following:
•
Place a Loopback connector (or connect pin 2 to pin3) on the serial port of
your PC. If the Loopback test fails, there is a problem with the serial port on
your PC.
•
Place the Loopback connector (or connect pin 2 to pin3) on the end of the
serial cable coming from your PC and repeat the Loopback test. If the
Loopback test fails replace the serial cable. If the Loopback test passes
check the position and programming of the RF Modems. Bring the modem
from the sign into your room and try the test again with the two modems in
visual range on each other. If the Loopback test passed with the modems
within visual range and fails with one modem in the sign you probably have
too many obstructions between the Modems or the Modems are not within
communication range of each other, or there is RF Interference washing out
the signal from your RF MODEMS.
