3com FlexWATCH 3110 Manuel D’Utilisation

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Network Video Server                                                        User’s Manual 
 
 
                                   
Seyeon Tech Co., Ltd 
 
 
 
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maximum number of pre alarm for e-mail, ftp or Alarm buffering service (Pre alarm only) 
can be done with this buffer size, if there is enough memory space for respective services. 
Note that there must be enough memory space left for e-mail, ftp and Alarm Buffering 
service (Pre alarm only), since respective service (e-mail, ftp or Alarm buffering service) 
consumes separate memory in addition to pre alarm buffer size configured to make a real 
service. 
 
Delay between pre-alarm image :  
This is the set up pre alarm speed when the server store image in the system memory. 
1000mse is equal to 1sec and basic unit is 10msec. If you want to get 10fps pre-
alarm speed, 10 will be very appropriate number for Delay value.  
 
* Maximum Pre alarm buffer  should be the half size of Total Pre Alarm buffer 
size  memory assigned in the system, since Pre alarm images for e-mail, FTP or 
alarm buffering service are taken from Pre alarm buffer pool and any Pre alarm 
image for these services  require additional memory space. 
 
1)  Go to Advance service mode in the Service configuration section 
2)  Go to “Buffering service” mode 
3)  Set up pre-alarm Buffer size and delay time. 
4)  Click “Buffer Calculator” button to run the calculator.  
 
1.2 
Buffer calculator 
Through “Buffer Calculator” option,  you can easily calculate assignable pre/post alarm 
buffer size for each channel before setting up Pre/Post alarm buffer frame in the system 
memory.  
 
Following is logic for Pre/Post alarm assignment. By running buffer calculator you can try 
pre/post alarm size. 
 
Total buffer size 
23500 kb 
Total Pre-alarm buffer size  
(40%) 
- INTPLUS [2005] -