User manual

Trigger Setup
3. Push Type.
Type
Bus
Source
Bus
B1 (I2C)
Trigger On
Address
Address
07F
Direction
Write
Mode
Auto
& Holdoff
4. Turn Multipur
pose a to scroll through the
trigger type side menu until you select Bus.
5. Push Source Bus and use the Source Bus
side menu to
select the bus that you want
to trigger on.
6. Push Trigge
rOnand select the desired
trigger on feature from the side menu.
Parallel Bus Trigger (requires option MDO3MSO)
You can trigger on a binary or hex data value. Push Data on the lower menu and enter the parameters of interest with the
Multipurpose a and Multipu rpo se b knobs.
I
2
CBusTrigger
You can trigger on Start, Repeated Start, Stop, Missing Ack, Address, Data,orAddress/Data.
If you are setting up an I
2
C trigger and have made a Trigger On selection of Address or Address/Data, push Address
on the l
ower menu to access the I
2
C Address side menu.
Push A
ddressing Mode on the side m enu and select 7bitor 10 bit.PushAddress on the side menu. Enter the address
parameters of interest with the Multipurpose a and Multipurpose b knobs.
Then push Direction on the lower menu and select the direction of interest: Read, Write,orRead or Write.
If you have made a Trigger On selection of Data or Address/Data, push Data on the lower menu to access the I
2
C
Data side menu.
Push Number of Bytes and enter the number of bytes with Multipurpose a.
Push Addressing Mode on the side menu and select 7-bit or 10–bit. Push Data on the side menu. Enter the data
para
meters of interest with the Multipurpose a and M ultipurpose b knobs.
For
more information on the I
2
C address formats, refer to item 2 under Setting Up Bus Parameters.
SPI Bus Trigger
You can trigger on SS Active, MOSI, MISO,orMOSI & MISO.
If you are setting up an SPI trigger and have made a Trigger On selection of MOSI or MISO,pushData on the lower
menu, push MOSI or MISO on the side menu, and enter the data parameters of interest using the Multipurpose a and
Multipurpose b knobs.
Then push Number of Bytes and enter the number of bytes with the Multipurpose a knob.
If you select MOSI & MISO, push Data on the lower menu and enter the parameters of interest in the side menus.
94 MDO3000 Series Oscilloscopes User Manual