User guide

Introduction
700-0160 R003 1–5
1.2.2. Recording Capacity for DVR Hard Drive Storage
The Explorer MX-HD uses MPEG-4 (for analog cameras), H.264 and MJPEG (for an
HD camera) video compression to extend the recording time on the hard drive. The
recording time varies, depending on the settings for frames per second (speed),
resolution (pixel count), and picture quality. The picture quality setting determines the
amount a picture is compressed versus the amount of memory the picture takes up on
the hard drive.
• A lower picture quality of setting 1, for example, means higher compression and a
lower memory requirement.
• A higher picture quality of setting 4, for example, means lower compression and a
higher memory requirement.
1.2.2.1. Estimated Recording Times
Table 1-1
to Table 1-7 show the estimated recording time in hours for a 750 GB Hard
Drive at different settings, including Record 2 set at 5 FPS, (3) 360x240.
Important: The average image size is dependent on the scene content, amount of motion, and the
lighting conditions. Actual recording times will vary greatly.
Table 1-1 MX-HD— Estimated Recording Times for 1 HD Camera
FPS Picture Quality* (3), 720p (1280 x 720)
30 481 hours
15 865 hours
10 1286 hours
5 1843 hours
Table 1-2 MX-HD— Estimated Recording Times for 1 HD and 1 Analog Camera
FPS
Picture Quality* (3), 720p (1280 x 720)
CIF (360×240) Half D1 (720×240) D1 (720×480)
30 435 hours 390 hours 355 hours
15 784 hours 730 hours 666 hours
10 1150 hours 1033 hours 925 hours
5 1663 hours 1559 hours 1462 hours
Table 1-3 MX-HD— Estimated Recording Times for 1 HD and 2 Analog Cameras
FPS
Picture Quality* (3), 720p (1280 x 720)
CIF (360×240) Half D1 (720×240) D1 (720×480)
30 397 hours 328 hours 281 hours
15 716 hours 632 hours 542 hours
10 1040 hours 863 hours 722 hours
5 1515 hours 1351 hours 1212 hours