Computer Hardware User Manual

Documentation Number 232CCxx4502 37
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]
B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]
Troubleshooting
If you are unable to communicate with the card from your software:
1. Consult your software manual to make sure it supports the
address and interrupt that you have configured.
2. Double check that the address and interrupt are properly set.
3. Try another software package for troubleshooting. Download
SimpTerm (DOS Terminal Emulator) or Comtest (Windows
Terminal Emulator) from B&B Electronics’ web site. SimpTerm
and Comtest are shareware Simple Terminal Emulators which
can be used to vary the setup of any serial card. Both can be
downloaded from the following site location:
http://www.bb-elec.com/support.asp
4. Troubleshooting with a Loopback Test.
Load Simpterm or Comtest on the test PC. When loading
Simpterm you must set up the port address and IRQ you have set
on the B&B Electronics serial card.
Jumper TD to RD on the DB9 male connector located on the
serial card. You may have to make a “loopback connector” in order
to do this. This is done by jumpering pin 2 and pin 3 of a DB9
female connector and plugging it into the DB9 male port on the
serial card.
To test the RS-232 handshake lines you can also jumper RTS
to CTS and DTR to DSR. When you raise the RTS line you should
see CTS also go high. When you raise the DTR line you should see
DSRalsogohigh.
Send data from the Serial Port (B&B Electronics serial card) and
see if the data is echoed back to the port. When a character is typed
on the keyboard you must see a duplicate character after the first
character to verify that the same character was received. Perform
this test on all ports of your serial card to verify the ports can (or
cannot) transmit and receive data.
5. Call B&B Electronics' Technical Support at the number/s shown
below:
International/USA Office:
[phone], 8a.m. - 5:00 p.m. weekdays (Central USA Time).
European Office:
[phone], 8a.m. – 4:30 p.m. weekdays (UK).