Datalogic Matrix 300 Reference Manual page 128

7
The Parameter Setup window works in Interactive Mode in order to cause each parameter
setting to be immediately effective.
NOTE: If you want to save the temporary configuration to permanent
memory, you must first close the Calibration Tool window. Then, you must
disable the Interactive Mode and select the Permanent Memory option from
the Send Configuration item in the Device menu.
The following examples show some of the typical conditions occurring during the installation:
Under-exposure:
To correct this result it is recommended to change the following parameters in their order of
appearance:
1. increase the Exposure Time
2. increase the Gain
NOTE: In general, a longer exposure time corresponds to a lighter image but
is susceptible to blurring due to code movement. Exposure time is also
limited by the Internal Lighting mode parameter. Longer exposure times
can be set if the power strobe level is lowered.
High gain settings may produce a grainy image that may affect the decoding
process.
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Figure 82 - Example Under Exposure: Too Dark
MATRIX 300™ REFERENCE MANUAL