What type of image compression does the DX-TL900U uses and what are their file size?
a. The DX-TL900U records in wavelet format. The DVR supports 5 recording quality grades. Superior is the best quality and its file size per image is 42K, High is the second best and the image file size is 28K, Standard is 18K, Basic is 12K and the lowest quality grade is 6K. Remember that PPS and grade quality affect how long the DVR will record with its HDD capacity.