Epson PLQ-20 Reference Manual page 90

Magnetic standard
You can select the magnetic standard in this setting.
This feature is available only for PLQ-20M.
End sentinel
You can select C or F as the letter which will be attached to the
end of the data recorded on magnetic stripes.
This setting is effective only when the format for IBM3604 or
IBM4746 is selected in the Magnetic standard setting.
This feature is available only for PLQ-20M.
Displacement
This option allows you to select the displacement value of the
magnetic stripe.
This feature is available only for PLQ-20M.
Duplicate
When this feature is set to On, the magnetic stripes record the data
in duplicate.
This feature is available only for PLQ-20M.
Retry
This setting allows you to set the number of times the printer tries
to receive data before it fails.
This feature is available only for PLQ-20M.
Chapter 5 Control Panel 90