IC Realtime Specialty: Interrogator DVR - a DVR for law enforcement User Manual
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1.3 Special Features
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Time information overlay, channel information overlay, temperature and humidity
information overlay
Time information is on the top right corner by default. Channel information is on left 
down corner by default. Temperature and humidity information is on top left corner by 
default. Time information position and channel information position can be modified. 
Please note, before you overlaying temperature and humidity information, please go to 
pan/tilt zoom setup interface. Then set as: LTM8230C, baudrate: 9600, data bit: 7 and 
stop bit: 2. finally, input corresponding address. 
 
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Good audio effect
System adopts ADPCM compression algorithm. It can lower the noise and enhance 
definition 
 
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Preview
PIP
Support PIP(picture in picture) function so that you can view the specified position in 
detail and at the same time observe the whole situation. 
 
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Real-time
backup
System supports synchronization backup, alternative backup and circle backup. 
You can backup current monitor data to the specified DVD (one or several DVDs) and 
at the same time the specified channel can be memorized in PIP mode. 
Synchronization backup: The specified device can burn the same data at the
same time.
Alternative backup: system support several burners to backup in turn. You can
insert the newt CD to continue backup once the current one is full. Please note 
to guarantee there is no data loss between these two CDs, please make sure 
current record function is normal. 
Circle backup: This function is based on alternative backup. When the first CD
is full, burner pop up the CD and you can input a new one. Once the alternative 
backup is full, system goes back to the first CD to begin burning. 
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Switch CD function
When the CD free space reaches a threshold, system can alarm you. (You can specify 
a value here. Minimum value is 50M) After you insert the new CD, system reads the 
previous three to five minutes data to current CD and then start burning. Please note 
during the whole process, you need to make sure manual record is working properly 
and record is successfully. 
 
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CD
playback
You can use this function to verify the real-time burning data or backup data. System 
supports CD playback only. For burning or backup operation, if you have selected 
multiple channels manually, playback operation is distinguished by channel and the 
image is the video effect of one specified channel. Sometimes, the specified channel is 
a PIP mode.