Pelco C1572M Manuel d'utilisateur télécharger pdf (Page 45)

44 C1566M-C (10/05)

Downframing

To expand the matrix video outputs beyond 32, you can loop the video from the ﬁrst CM9780-MXB to subsequent CM9780-MXB units for an

additional 32 monitor outputs on each matrix bay. You can also loop the video using CM9700-VPPs and DVRs. Refer to Figure 34 and Figure 35.

You can connect a maximum of eight bays in a downframing conﬁguration for a total MXB capacity of 256 monitors; in addition, you can increase

monitor capacity further by using MDA units, for a total single-node system capacity of 512 monitors.

Set the termination jumpers on the CM9780-DFC cards in the unterminated position in each bay that is not the ﬁnal device. Terminate the video

signal at the ﬁnal point in the downframe conﬁguration, which could be either of the following:

• If you are not looping video out from the ﬁnal bay, terminate the video in the ﬁnal bay.

• If you are looping video to another device (such as a DVR, VCR, or switcher), terminate the video signal at the ﬁnal device.

The DFC card termination jumpers are illustrated in Figure 10 in the Installation section.

Figure 34. Downframing with DFC Cards

CM9780-MXB

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Pelco C1572M Manuel d'utilisateur Page 45