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Rigol DHO814 User Manual

Rigol DHO814
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15
Protocol Decoding
You can use the protocol analysis to discover errors, debug hardware, and accelerate
development easily, ensuring you to accomplish the projects with high speed and
good quality. Protocol decoding is the basis of protocol analysis. Only protocol
analyses with correct protocol decoding are acceptable, and only correct protocol
decoding can identify more error information. This oscilloscope provides four bus
decoding modules (Decode 1, Decode 2, Decode 3, and Decode 4) to make common
protocol decoding for the input signals of the analog channels. It provides standard
serial decodes including Parallel, RS232/UART, I2C, and SPI. As the decoding functions
and setting methods of Decode1, Decode2, Decode3, and Decode4 are the same, this
chapter takes Decode1 as an example for illustration.
• Click or tap > Decode to enter the "Decode" menu.
• Click or tap the Decode button on the toolbar to enter the "Decode" menu.
15.1 Parallel Decoding
Parallel bus consists of clock line and data line. As shown in the figure below, CLK is
the clock line, whereas Bit0 and Bit1 are the 0 bit and 1st bit on the data line
respectively. The oscilloscope will sample the channel data on the rising edge, falling
edge, or the rising/falling edge of the clock and judge each data point (logic "1" or
logic "0") according to the preset threshold level.
CLK
Bit0
Bit1
Parallel[BIN] 11 10
10
10 00
Figure 15.1 Schematic Diagram of Parallel Decoding
In the
Decode menu, click or tap the drop-down button of Bus Type to select
Parallel, then configure the parameters for Parallel decoding.
Protocol Decoding
DHO800 User Guide
168
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.

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Rigol DHO814 Specifications

General IconGeneral
BrandRigol
ModelDHO814
CategoryTest Equipment
LanguageEnglish

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