26 Vuquest 3320g User Guide
RS232 Word Length: Data Bits, Stop Bits, and Parity
Data Bits sets the word length at 7 or 8 bits of data per character.  If an application 
requires only ASCII Hex characters 0 through 7F decimal (text, digits, and punctua-
tion), select 7 data bits.  For applications that require use of the full ASCII set, select 
8 data bits per character.  Default = 8.