L-DALI User Manual
102
LOYTEC
Version 5.2
LOYTEC electronics GmbH
Figure 102: Part of the CEA-852 Statistics Page
5.5.6 Enhanced Communications Test
The Enhanced Communications Test allows testing the CEA-852 communication path
between the CEA-852 device on the L-DALI and other CEA-852 devices as well as the
configuration server. The test thoroughly diagnoses the paths between individual members
of the IP channel and the configuration server in each direction. Port-forwarding problems
are recognized. For older devices or devices by other manufacturers, which do not support
the enhanced test features, the test passes as soon as a device is reachable, but adds a
comment, that the return path could not be tested. A typical output is shown in Figure 103.
The round-trip value (RTT) is measured as the time a packet sent to the peer device needs
to be routed back to the L-DALI. It is a measure for general network delay. If the test to a
specific member fails, a text is displayed to describe the possible source of the problem.
The reasons for failure are summarized in Table 13.
