User’s Manual of
OWON
Color Mixed Signal Digital Storage Oscilloscope
Duration trigger function as below:
Function Setting
Instruction
Source BUS0
～
BUS3
Select the trigger source from BUS0~BUS3
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.
Duration 10ns
～
50s
The duration width can be set from 10ns (1-2-5)
to 10.00us (1-2-5) according to the sampling
rate from high to low.
Qualifier >=
<=
Trigger occur on condition that the bus value is
equal to the code type and the duration is more
than or equal to the duration width.
Trigger occur on condition that the bus value is
equal to the code type and the duration is less
than or equal to the duration width.
For example: measure a 16 bit data bus signal, bus will appear data of “0X99” and
continuous time is 50ns. We set BUS0 to include 16 measurement channels and
sample rate as “100M”, trigger setting as duration trigger. Setting steps as below:
A
、
Press
“
Trigger MENU
”
and menu appears.
B
、
Press
“
F1
”
till trigger mode display as
“
Data Width
”
C
、
Press
“
F2
”
till signal resource display as
“
BUS0
”
D
、
Press “
F3
” and data in code type as red background and green digital
indicator on, then insert data value “
0X99
”. Press “
F3
” again and red
background disappeared. Repeat operation of step D if setting error or
need to be modified,
E
、
Press
“
F4
”
and duration in menu setting window correspond to F4
display red background. Turn
“
CH1 Volts/Div
”
knob and set duration as
“
50ns
”
.
F
、
Press
“
F5
”
till qualifier display as “
>=
”
G
、
Turn “
Trigger level
” adjust knobtill or press
“
set 50%
”
till trigger
position display as “
NEXT T POS = 50%
”.
Then duration trigger setting finished (refer to Fig. 73) and ready for data
acquisition.
75
