User guide

36 Chapter 7 Troubleshooting
1. Download RealPort from the CD enclosed with the device server or
from the Tech Support FTP site.
2. Verify you have the latest version of the driver installed.
3. Open up HyperTerminal and connect to the COM Port you want to test.
4. Plug the DB-9 Loop back (shipped with the product) into the serial port
into the Digi device.
5. Type a unique word or phrase to see if it displays on the screen properly
- that is every character or keystroke is displayed. Verify that local echo
is not on by removing the loopback and typing another word or phrase.
There should be no display. If the display is correct with the loopback,
you have successfully connected to the port and your device server is
configured correctly. If it doesn’t work go to step 6.
6. If you continue to have problems, try to Telnet to the device server serial
port (as discussed earlier in this chapter) to verify the hardware setup.
Firmware
If your hardware is okay, make sure you are running the latest firmware
version available. Check the Digi Support site for the latest firmware and/or
POST updates for your device:
http://ftp.digi.com/support/firmware
1. Download a copy of the firmware file.
2. Access the Digi device server’s web interface by entering the Digi
device server’s IP address in a browser’s URL window and log on (User
Name root, Password dbps).
3. Click Update Firmware from main menu.
4. Browse to the location on your system where the firmware has been
saved, select the correct file, and click Update.
5. Reboot the device when prompted.
6. Access the Digi device server’s web interface and verify on the
Information Page that the Firmware version has been successfully
updated.
If Hyper-
Terminal
works with
the loop back
but you
cannot
communicate
with your
serial device,
check the
cabling.
Do not leave
your
browser until
you are
prompted to
reboot.