Axis 24HUM Administration Manual page 43

AXIS 2400/2401 Administration Manual
Symptoms
The Network indicator
displays red.
The Active and Network
indicators are flashing
every 0.5 seconds
Your AXIS 2400 works
locally, but not externally.
No image using Refresh
and/or
Slow updating of
snapshots using the
Server push function.
Triggering difficulties with
programming scripts
Bad snapshot images.
Note:
If you still have a problem after reading this information, please contact your reseller or check the
FAQ on the Axis Website at http://cctv.axis.com.
Possible causes
Faulty cabling.
Hardware failure.
Firewall protection
Default routers required
The Internet site is too
heavily loaded.
Complex images, i.e.
those containing great
picture contrasts, have
greater file size and thus
place greater demand on
the available file space
within the AXIS
2400/2401.
Unable to triggering on
both positive and negative
transitions of the Control
Button and/or IO ports
(double-edged trigger-
ing).
Display configured incor-
rectly on your worksta-
tion.
Appendix A - Troubleshooting
Remedial actions
1. To verify that the cables are functional, PING the address
of a known existing unit on your network.
2. If the cabling is OK and your network is reachable, you
should receive the reply similar to this:
...bytes = 32 time = 2 ms,
Contact your Axis dealer.
Check the Internet firewall with your system manager.
Check if you need to configure the default router settings.
Use a script running on your web server to relay images
from the AXIS 2400/2401 to the Internet.
The memory constraints become significantly more acute if
multiple clients try to access the same snapshot.
Try limiting the number of clients.
Repetitive trigger conditions that occur in quick succession
of one another can be missed. This is because the com-
mand initiated by the first trigger event may not have been
fully executed prior to the second event. This scenario is
demonstrated in the illustration below:
Command
?
Command
T1
Trigger
This feature has particular significance when using com-
mands that take a relatively long time to process, e.g. mail
or ftp, especially if they are conjugated with a loop state-
ment. See also Appendix H- The Programming Script.
Within Display Properties, configure your display to show at
least 65'000 colors, i.e. at least 16-bit.
Using only 16 or 256 colors on your computer will produce
dithering artifacts in the image.
Command
T2 T3
Time
41