Datalogic Gryphon GD4500 - Beep on ASCII BEL; Beep on Not on File

RS-232/USB-COM SETTINGS ENTER/EXIT PROGRAMMING MODE
PRODUCT REFERENCE GUIDE 43
Beep On ASCII BEL
When this parameter is enabled, the reader issues a beep when a <BEL> character is
detected on the RS-232 serial line. <BEL> is issued to gain a user's attention to an illegal
entry or other important event.
Beep On Not on File
This option enables/disables the action of the reader to sound a three beep sequence
upon receiving a Not-On-File (NOF) host command.

Beep On ASCII BEL = Disable
$CR2BB00
$CR2BB01
Beep On ASCII BEL = Enable
Beep On Not On File = Disable
$CBPNF00
$CBPNF01

Beep On Not On File = Enable