User’s Manual of
OWON
Color Mixed Signal Digital Storage Oscilloscope
Fig 64
：
Bus trigger menu
Bus trigger menu as below:
Function Setting
Instruction
Source
BUS0
～
BUS3
BUS0 to BUS3 can be set as trigger source
Code
0x0000
～
0xffff
（
HEX
）
0
～
65535
（
DEC
）
Can be set discretionarily between 0x0000 and 0xffff
（
HEX
）
or between 0 and 65535 (DEC
）
according to the bus
and code setting.
Qualifier =
>=
<=
Trigger occur when the Bus value equal to the set
code.
Trigger occur when the Bus value is more than or
equal to the set code
Trigger occur when the Bus value is less than or equal
to the set code
For example, to measure an 8 bit data signal we need to observe when data value
as 0X18 how the data changed before and after. We set the BUS0 to include
CH00
～
CH07 and use channel CH00~CH07 to measure the signal. Trigger setting
steps as below;
A. Press
“
Trigger menu
”
and menu appears.
B. Press
“
F1
”
till trigger mode display as
“
bus
”
C. Press
“
F2
”
till signal source display as
“
BUS0
”
D. Press “
F3
” and data in code type as red background and green digital
indicator on, then insert data value “18” and set code as “
0X18
”. Press “
F3
”
again and red background disappeared. Repeat operation of step D if
setting error or need to be modified,
E. Press
“
F4
”
till type display as
“
=
”
F. Turn “
Trigger level
” adjust knobtill or press
“
set 50%
”
till trigger
69
