4 - 6 2020/4820/4820i User’s GuideScan Stand ModeWhen a unit is in Scan Stand mode, it remains idle as long as it sees the ScanStand symbol. (SeeScan Stand Symbol that follows.) When a different codeis presented, the imager is triggered to read the new code.Note:The imager automatically adjusts the illumination LEDs to the lowest lightlevel possible to maintain a good lock on the Scan Stand symbol. When asymbol is presented, the imager’s light levels adjust to the saved setting (seeLED Power Level on page 4-9). This mode requires at least 50 lux of ambientlight to operate correctly.Scan Stand SymbolWhen a unit is in Scan Stand mode, the LEDs shine at the Scan Stand symbolon the base of the stand which tells it to remain idle. When the Scan Standsymbol is covered, the imager turns the LEDs on at the configured power level(Default High) and attempts to find and decode bar codes in its field of view.Presentation ModeNote: This mode requires at least 50 lux of ambient light to operate correctly.Scanning the bar code below programs the imager to work in Presentation Mode.Presentation Mode uses ambient light to detect bar codes. The LEDs are off untila bar code is presented to the imager, then the LEDs turn on automatically toread the code. If the light level in the room is not high enough, PresentationMode may not work properly.Scan Stand ModeScan Stand SymbolPresentation Mode
