7
4.Structure
5.Operation instruction
5.1 Keys
Total six keys
：
▲
、
▼
、
Back
、
OK
、
run/stop
、
Three interfaces
：
Testing interface
、
Menu interface
、
Setting interface
Six keys will have different function in the three interfaces as the
following:
Testing interface
Menu interface
Setting interface
▲
----
move to left or up
move to left or up /data plus
▼
----
move to right or down
move to right or down/ data minus
Back
----
back
back
