Metrologic Instruments MS1890 User Manual download pdf (Page 18)

CANNER

PERATION

Visual

Indicators

The MS1890 has three LED indicators (yellow, white and

blue) located on the top of the scanner. When the scanner

is on, the flashing or stationary activity of the LEDs

indicates the status of the current scan and the scanner.

No LEDs are Illuminated

The LEDs will not be illuminated if the scanner is not

receiving power from the host or transformer.

The scanner is in stand-by mode. Present a bar code to

the scanner and the blue LED will turn on when the IR

detects the object.

Steady Blue

The blue LED is illuminated when the scanner is active and linear illumination

is on or when the scanner is attempting to decode a barcode.

Steady Blue and Single White Flash

When the scanner successfully reads a bar code it will beep once and the

white LED will turn on indicating data is being transmitted.

If the scanner does not beep once and the white light does not turn on, then

the bar code has not been successfully read.

Steady White

When the scanner successfully reads a bar code it will beep once and the

white LED will turn on indicating data is being transmitted.

After a successful scan, the scanner transmits the data to the host

device. Some communication modes require that the host inform the

scanner when data is ready to be received. If the host is not ready to

accept the information, the scanner’s white LED will remain on until the

data can be transmitted.

Alternating Flashing of Blue and White

This indicates the scanner is in configuration mode. A short razzberry tone

indicates that an invalid bar code has been scanned while in this mode.

Figure 11.

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Metrologic Instruments MS1890 User Manual Page 18