© Copyright Qvis® All documentation rights reserved. 122Figure 5-605.5.9 Card OverlayThe card overlay function is for financial areas. It includes Sniffer, information analysis and titleoverlay function. The Sniffer mode includes COM and network.COM TypeThe COM interface is shown as below. See Figure 5-61. Protocol: Please select from the dropdown list. Setting: Click COM setting button, the interface is shown as in RS232 interface. Pleaserefer to Chapter 5.3.4 RS232. Overlay channel: Please select the channel you want to overlay the card number. Overlay mode: There are two options: preview and encode. Preview means overlay thecard number in the local monitor video. Encode means overlay the card number in therecord file. Overlay Position: Here you can select the proper overlay position from the dropdown list.Figure 5-61