User manual

52
Appendix 11
Troubleshooting
If a problem cannot be resolved, please contact DVTel’s Technical Support Department.
The version numbers of the internal processors can be viewed on a special page. Please note this information
before contacting Technical Support.
– In the address field of the browser, append /version.htm to the IP address of the unit (e.g.
192.168.0.12/version.htm) and press Enter.
– Write down the information or print out the page.
The following table is intended to help you identify the causes of malfunctions and correct them whenever
possible.
Problem Possible Causes Solution
No connection between the
unit and a terminal program.
Faulty cable connections. Check all cables, plugs, contacts and
connections.
The computer's serial interface is not
connected.
Check the other serial interfaces.
Interface parameters do not match. Select a different COM port if necessary and
make sure that the computer's interface
parameters match those of the unit. You can also
try the following standard parameters: 19,200
baud, 8 data bits, no parity, 1 stop bit. After that,
switch off the power to the unit and switch it on
again after a couple of seconds.
No image transmission from
the target location.
Defective camera. Connect a local monitor and check the camera.
Faulty cable connections. Check all cables, plugs, contacts and
connections.
No connection established,
no image transmission.
The unit's configuration. Check all settings.
Faulty installation. Check all cables, plugs, contacts and
connections.
Wrong IP address. Check the IP address (with a terminal program).
Faulty data transmission within the
LAN.
Check data transmission with the ping
command.
The maximum number of allowed
connections has already been reached.
Wait until there is a free connection and contact
the transmitter again.
No audio transmission from
the target location.
Hardware failure. Check that all audio devices connected function
correctly.
Faulty cable connections. Check all cables, plugs, contacts and
connections.
Faulty configuration. Check the audio settings (volume and coding
mode).
Audio/voice communication is busy with
another receiver.
Wait until a connection is available and contact
the transmitter again.
The unit does not report an
alarm.
No alarm source is chosen. Select alarm input on the Alarm sources
configuration page.
No alarm action selected. Define the desired alarm actions on the Alarm
connections configuration page. If necessary,
change the IP address.