5-22  Chapter 5: Programming 
Tone Frequency (Hertz) 
The Hex B tag sets the frequency of the Good Read tone. Each time the Hex B tag is scanned, 
the tone increments one unit. After reaching the highest frequency, the sequence starts over 
with the lowest frequency. End this mode by scanning the End tag or another valid Hex tag. 
The Good Read Tone frequency can have one of the following eight values: 
3348 Hz 
2976 Hz 
2679 Hz 
2435 Hz 
2232 Hz 
3906 Hz 
3750 Hz 
3538 Hz 
Tone Length (Milliseconds) 
The Hex C tag sets the length of the Good Read Tone. Each time the Hex C tag is scanned, the 
tone length changes from the shortest to the longest, and then back again. End this mode by 
scanning the End tag or another valid Hex tag. 
The Good Read Tone length is from 15 ms to 225 ms in 15 ms increments  
(15 total values). 
Tone Volume 
The Hex D tag selects the volume of the Good Read tone by increasing it as the Hex D tag is 
repeatedly scanned. After the loudest volume is reached, the sequence begins again with the 
softest volume. End this mode by scanning the End tag or another valid Hex tag. 
There are eight different volume settings available on the 7893. However, there is a 
programming sequence which allows the user to access eleven volumes. Refer to the Volume 
Adjust section in this chapter for details on activating the eleven volumes and other functions 
of the volume button. 
Not-On-File Volume 
The Hex E tag sets the volume of the Not–On–File tone by listening to it as the Hex E tag is 
repeatedly scanned. The new tone sounds for two seconds. End this mode by scanning the End 
tag or another valid Hex tag. 
The Not-On-File tone goes off when the scanner receives a command from the host terminal to 
do so. In RS-232 protocol, there is a Not–On–File command. Refer to the NCR Scanner/Scale 
Interface Programmer's Guide (BD20-1074-A) for more information about the Not-On-File 
command.