Tektronix MDO4054-3, Руководство пользователя, Страница: 106 / 222

Trigger Setup
2. Push Trigger Menu .
3. Push Type . Type
Bus
Source
Bus
B1 (I2C)
Trigger On
Address
Address
07F
Direction
Write
Mode
Auto
& Holdoff
4. Turn multipurpose knob 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 Trigger On and select the desired
trigger on feature from the side-bezel menu.
Parallel Bus Trigger
You can trigger on a binary or hex data value. Push the lower-bezel Data button and enter the parameters of interest
with multipurpose knobs a and b .
I
2
C Bus Trigger
You can trigger on Start , Repeated Start , Stop , Missing Ack , Address, Data , or Address/Data .
If you are setting up an I
2
C trigger and have made a Trigger On selection of Address or Address/Data , push the lower-bezel
Address button to access the I
2
C Address side-bezel menu.
Push the side-bezel Addressing Mode button and select 7 bit or 10 bit . Push the side-bezel Address button. Enter the
address parameters of interest with multipurpose knobs a and b .
Then push the lower-bezel menu Direction button and select the direction of interest: Read , Write , or Read or Write .
If you have made a Trigger On selection of Data or Address/Data , push the lower-bezel Data button to access the I
2
C
Data side-bezel menu.
Push the Number of Bytes button and enter the number of bytes with multipurpose knob a .
Push the side-bezel Addressing Mode button and select 7-bit or 10–bit . Push the side-bezel Data button. Enter the data
parameters of interest with multipurpose knobs a and b .
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 , or MOSI & MISO .
MDO4000 Series Oscilloscopes User Manual 87