PSC Scanners - Manual (Page 46)

40 User’s / Programming Guide
Transmission of the last character in a UPC symbol (the check digit) is
disabled by scanning Option QF, or is enabled by scanning Option
QG.
QF
Disable Transmission of Check
Digit
QG
Enable Transmission of Check
Digit *#
Scanning QJ causes UPC-A labels to be transmitted as EAN-13
labels. Scanning QK disables this feature.
QJ Enable UPC to EAN Translation
QK
Disable UPC to EAN Translation
*#@
QN
Disable second beep on
Supplement decoded *
QO
Enable second beep on
Supplement decoded
QP
Set supplement retry count (16 by
default) range = 1-32
QR
Disable transmissionof UPC-E
check digit