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Bus trigger menu as below:
Function
Setting
Source
BUS0 ~ BUS3
0x0000~0xffff
(HEX)
Code
0~65535
(DEC)
=
>=
Qualifier
<=
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:
1.
Press "Trigger menu" and menu appears.
2.
Press "F1" till trigger mode display as "Bus"
3.
Press "F2" till signal source display as "BUS0"
4.
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,
5.
Press "F4" till type display as "="
6.
Turn "Trigger level " adjust knob or press "set 50%"till trigger position display as "NEXT T POS = 50%".
BUS trigger setting is finished and ready for data acquisition (ref to Fig. 79).
Instruction
BUS0 to BUS3 can be set as trigger source
Can be set discretionarily between 0x0000 and 0xffff (HEX) or
between 0 and 65535 (DEC) according to the bus and code
setting.
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
Fig. 79 Bus trigger
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