Figure A-5 Ms-Sensor Range - Microscan MS-710 User Manual

cm 20 15
in.
5
MS-sensor's
detection area

Figure A-5 MS-Sensor Range

a) Determine the setting for Reflectance Threshold (the minimum reflective level at
which an object is detected) by selecting a value that is one or two numbers greater
than the value posted next to REF when nothing is in the scanner's beam.
b) Determine the setting for Transition Counter (each bar and space along a bar code
symbol is counted as a "transition") by testing the TRANS readout for several objects
with symbols and then selecting a value that is one or two numbers less than the
smallest value that was posted next to TRANS during the test period.
c) Enter <J> to exit the extended decode rate test.
d) Set Transition Counter and Reflectance Threshold (see
trol (AGC)" on page 4-16) to the numbers you have selected during the extended
decode rate test.
e) Activate the triggering event. The scanner will either output the symbol's data or the
sensor will display a message signifying that the bar code symbol is defective, that
no symbol is present, or that no object is present.
1. Reflectance can also be modified by sending the <KQoffset> test command which samples 50
scans for the highest reflectance value and adds a user-defined offset to this value.
MS-710 Scanner User's Manual
A-16
Scan Width
10 5 0 5 10 15 20
0 5
Scan Beam
specular
25
20
15
Specular Objects
10
Diffused Objects
5
0
Scan angle equals
cm
60 degrees
MS-710
Range
10
5
0
in.
1
"Automatic Gain Con-