PSC PT2000TM - Manual (Page 148)

Programming Bar Codes
138 PT2000 & Top Gun
UPC/EAN/JAN Extensions
Code 128
ALLOW 2-DIGIT EXTENSIONS
On
*$+$-3C1EE*
Off
*$+$-3C0EE*
ALLOW 5-DIGIT EXTENSIONS
On
*$+$-3D1EE*
Off
*$+$-3D0EE*
REQUIRE EXTENSIONS
On
*$+$-3E1EE*
Off
*$+$-3E0EE*
ENABLE
On
*$+$-401EE*
Off
*$+$-400EE*