Tektronix DPO5000 Series User Manual

Oscilloscope Reference Bus trigger
Bus trigger
A bus trigger occurs when a supported instrument detects a bus pattern that you specify for a parallel bus,
or a bus cycle you select for aserial bus.
You can set the instrument to trigger on a parallel bus when the instrument det ects a match to the bus
pattern, or when the instrument detects that the value on the bus is < or > the value of the bus pattern. The
pattern can
be in Binary, Hex, or Symbolic format.
You can set the instrument to trigger on an SPI bus when the instrument detects an SS or an MISO + MOSI
bus cycle.
For the MISO + MOSI selection, click the Edit button to d efi netheDataValuepattern,and
then set the Format to match.
You can se
t the instrument to trigger on an I2C bus when the instrument detects a Start, Stop, R epeated
Start, Missing Ack, Address, Data, or Addr + Data bus cycle or activity. For some Trigger O n s elections,
you need to set additional fields to define other parameters, such as for an Address. In this example, you
need to set an Address Format, Address Value (click the Edit button), Data Direction, and Addressing
Mode.
You can set the instrument to trigger on an USB bus when the instrument detects a Sync, Reset, Suspend,
Resume, End of Packet, Token (Address) Packet, Data Packet, Handshake Pa cket, Handshake Packet,
Special Packet, o r Error bus cycle or activity. For some Trigger On selections, you need to set additional
fields
to define other parameters, such as for a Token (Address) Packet. In this example, you need to set
a Token Type, Trigger when address is, Address Format, Address (click the Edit button), and when
endpoint is equal to Endpoint Format, and Endpoint.
You can set the instrument to trigger on an RS232 bus when the instrument dete cts a S tart, End of Packet,
Data, or Parity Error bus cycle or activity. For some Trigger On selections, you need to set additional fields
to define other parameters, such as for a Data. In this example, you need to set a Data Format, Number
of Bytes, and Data Value (click the Edit button).
You can set the instrument to trigger on an 8b10b bus when the instrument detects a Pattern,
Character/Symbol, Error, or Any Control Character. For some Trigger On selections, you need to set
additional fields to define other parameters, such as for a Pattern.
For all the serial standard buses, you can also set the component threshold levels through the Logic
Thresholds Setup button.
Communication trigger
Use the Comm trigger to trigger the instrument in conjunction with mask testing on communications codes
and standards. The controls work together to define the parameters for the trigger event.
The standards that appear in the Standard drop-down list depend on the coding format that you selected.
The coding format also determines whether upper, lower, single, or clock threshold levels or pulse forms
are used. The standard determines the bit rate.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 703

Tektronix DPO5000 Series Specifications

General

Brand	Tektronix
Model	DPO5000 Series
Category	Test Equipment
Language	English