Video Streaming - JAI Drive5 Installation Manual & Quick Start Manual

to/from the NTP Server and thereby help the NTP Client start/restart faster. "Burst + Min/Max Poll
intervals" mode will both speed up initial communication as well as set the minimum and maximum
poll interval for communication between the NTP Server and the NTP Client. This typically means that
the minimum and maximum poll intervals are changed to a lower value than that of the "Default"
mode, thereby making the NTP Client more responsive and more accurate, especially in cases where
the NTP Server is not a high-end dedicated time server, but instead is a service running on a
standard PC on the network.
NTP Minimum/Maximum Poll interval – These two settings specify the poll interval range used by the
NTP Client. The values are defined in seconds as a power of two so a minimum value of 4 translates
4
to 2 seconds = 16 seconds. A value of 6 translates into 2
value is the poll interval being used whenever the NTP Client starts up. It will then gradually increase
the poll interval to the maximum value and this maximum value will be used when the time
synchronization is in a steady state.
It is recommended to use the "Burst + Min/Max Poll Interval" mode when a standard PC is being
utilized as the NTP Server on the network.
The following three items are status readouts only and are not configurable by the user:
NTP estimated error (us) - This status value shows the estimated accuracy of the camera's time
value relative to the UTC. The estimate is based on the NTP protocol's ability to measure the
communication latency and jitter and based on these measurements the NTP Client inside the
camera can calculate the deviation from the NTP master to which it is connected. The master does
the same and the two measurements are used to give an estimate for the overall accuracy of the
clock. The estimate is in micro-seconds.
NTP Status - This is the "state" of the NTP Client. It uses the status/states from the NTP protocol and
displays one of the following values:
 Unknown (not a real NTP state but instead it indicates that the NTP is not enabled)
 UNSYNC – This means that the NTP Client is not synchronized
 PLL – This means that the NTP Client has been synchronized to the NTP Master
NTP Restart Count – This is the number of times the NTP Client has been restarted. If there are
communication problems with the NTP Server then the camera will automatically restart the NTP
Client in order to re-connect to the NTP Server. A high restart count typically indicates a
communication problem or configuration problems for the NTP Client

4.10 Video streaming

In addition to capturing triggered "still" images of passing vehicles and plates, the Drive5 system
offers live streaming. Live streaming outputs a continuous compressed video stream for real-time
remote viewing. Figure 29 shows the streaming-related settings. Explanations follow.
6
seconds = 64 seconds. The minimum
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