21–1 
IS4125 and IS4225 Scan Engines 
 
 
Disable Old Serial Program 
 
Enable Old Serial Program 
 
 
Enable Non Buffered TTL UART 
 
Enable Detect and Notify Mode 
 
Cunningham Defaults – Scan this code 
followed by Recall Defaults code to enable and 
load Cunningham defaults. 
 
For Same Symbol Time Out information, see page 7–3.