Tenma 72-14520 Instructions Manual page 22

• TRIGGER CHANNEL: Press the button to select comparative data channel and
switch between MOSI and MISO.
• FRAME LENGTH: The bit width of SPI communication is usually different due to
the different situation. Now the Multi-purpose control can select the data bit of the
decoding data switch either 4, 8, and 16.
• Press the RETURN to return to the first level menu.
• IDLE TIME: Set the idle time value. The Multi-purpose control can set the different
overtime value.
• TRIGGER SETTING: Set the trigger selection
Press the button TRIGGER SETTING to enter the trigger setting menu. The Trigger
Mode can be set to Auto or Normal.
• The Trigger Coupling can be set: DC, AC, low frequency, high frequency
suppression, and noise suppression.
• Press the RETURN to return to first level menu.
• If you need more detailed communication analysis, you can use native protocol
decoding function. The oscilloscope will capture the continuous communication
data. The communication content can be displayed by the screen or the event list.
• BUS SETTING: Press SETTING to enter the decoding bus setting.
• BUS STATUS: Press the button BUS STATUS, and the bus control selection list
pops up. The decoding function can be open or closed. The multi-purpose control
can also be used.
• DISPLAY FORMAT: Press the button DISPLAY FORMAT, and then there are four
kinds of display options: hexadecimal, decimal, and binary and ASCII. The multi-
purpose control can also set it after the list displays.
• EVENT LIST: Press the button EVENT LIST, and the decoding events can be open
or closed. The multi-purpose control can also set it after the list displays.
• PSEUDO SQUARE WAVE: Select this option and the pseudo square wave function
can be open and closed. The multi-purpose control can also be used.
• The pseudo square wave displays 0/1 collected by oscilloscope. The function
can display logic 0 and logic 1 on the screen under the condition that the input
waveform is severely distorted.
• Press the NEXT PAGE to enter the following settings.
• VERTICAL POSITION: Press the button and rotate the multi-purpose control, which
can adjust the position of decoding data on the screen. It is convenient for you to
observe the waveform and decoding data.
• EVENT LIST CHECK: When the oscilloscope is in the state of decoding, RUN/
STOP is green. At the moment when pressing RUN/STOP, RUN/STOP is red. The
oscilloscope will stop refreshing waveform and the collected data will be stored in
the oscilloscope. The menu will display decoding data selection.
• The button displays the times of captured transmission signal and the
corresponding number of the present selected data. The selected decoding data
will be highlighted in green. The multi-purpose control can select any collected data.
This function can find the content of captured multiple transmission communication
and help to conveniently debug the system.
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