Microscan MS-810, User Manual

Page: 128 / 144

Chapter A
A-30
MS-810 Industrial Scanner User’s Manual
A
p
p
e
ndice
s
Decode rate okay
but getting only
noread messages in
triggered mode
Triggering/timeout out of
sync
Review triggering and timing. (See the “Oper-
ation Menu” on page 2-16 .)
Object detector or another
scanner interfering with
reads
Remedy by remounting, eliminating interfer-
ence, or shielding.
Many object detectors emit pulsed infrared sig-
nals that can seriously degrade the decode
rate if they shine into the scanner or onto the
bar code label when it is being read.
Window dirty or obstructed Clean or remove obstruction.
Previous label
read, but subse-
quent label will not
read
Scanner configured in Con-
tinuous Read 1 Output
Scan a label that contains different data than
that of the one being read.
Scanner in polled mode Check communications protocol.
Scanner not enter-
ing read cycle in
triggered mode
(trigger not work-
ing)
Proper trigger levels not
enabled
Ensure that the trigger pulse and the trigger
polarity settings are correct.
Trigger circuit not correctly
wired
Ensure that the trigger circuit wiring meets the
scanner requirements. (See “Attach Cabling”
on page 1-3 .)
Object detector inoperative
Check detector range and sensitivity.
Try a detector that is known to be good.
Problem Possible Cause Solution