Newland NL-8300 User Manual page 28

Aux Test requires Self-test Head, which short circuits the Send and
Receive PIN of Aux Port download cable.
The XXX shown in figure 3-19 indicates the number of successful attempts.
b. In the Fif3-17 press 3 to make the self-check of assistant port 1 and 2. When initialization
of assistant port 1 is success, the LCD will display 115200 8 N 1. At the same time,
system will respectively judge whether assistant port 1 are success of self-check.
A Self-Test Head is needed for each Aux Port to perform the self-test.
Assistant 2 don't have any exterior interface and can't connect the self-check head. When
self-check the LCD will display "assistant 2 self-check fail!"
Initial assistant port display "115200 8 N 1"means:
Ⅰ 115200" means communication port rate is 9600 . "
Ⅱ 8" mean date bit is 8. . "
Ⅲ N"is the parity check bit, no follow any number means no parity check bit. . "
Ⅳ 1" mean the stop bit is 1. . "
Received XXX Pack
ErrCount:0
Fig 3-19