Step 5 - Calculate Number Of Scans - Microscan MS-7100 User Manual

Chapter 1 Setup and Installation
5
Calculate Number of Scans
To ensure reliable scanning, we recommend that you apply a minimum of
five scans to each label. Use the formulas below to calculate the number of
scans that your label will receive.
If the number of scans you derive from one of these calculations is less than
the minimum for your application, plug in the minimum number of scans and
solve for another parameter that might be changed, such as label speed or
scans per second (SPS).
See Appendix C, "Orientation," on page A-6
fence, and label characteristics.
MS-7100
Ladder Calculation

LH
×
------- -
SR

LS
Where LH
Example: If LH = 1, LS = 10, and SR = 1000, then the number of scans will
equal 97.
Picket Fence Calculation
(

SW LL –
------------------------- -

LS
Where SW
LS =
Example: If LL = 2, LS = 10, SW = 8, and SR = 1000, then the number of
scans will equal 597.
Angled Picket Fence Calculation
The number of complete scans for angled picket fence is calculated the same
as that for picket fence, with the exception that the scan width is shortened in
proportion to scan tilt.
1. The -3 component is added to allow for AGC acquisition and for incomplete first and last
scans. This applies only if the calculation in the brackets is 3 or more. If it equals 2, then sub-
tract only 1, giving 1 good scan.
1-6
MS-7100/7180 Industrial Scanner User's Manual
for explanation of ladder, picket

– 3 = number of complete scans

= Label Height, LS = Label Speed, and SR
)

×
SR – 3 = number of complete scans

= Scan Width, LL = Label Length,
Label Speed and SR = Scan Rate
1
= Scan Rate.
1