Condition Setting - Tenma 72-14520 Instructions Manual

Start SPI Trigger
• Press the DECODE button then press the TYPE option key to open protocol type
list. Rotate Multi-purpose control to select the SPI mode. Press to confirm selection.
• CS SETTING: Set Chip Selection Enable Signal
Use this feature to enter the enable signal setting up interface. Press the CS
SOURCE option button to switch any channel among CH1-CH4 as chip selection
signal. The corresponding logic level can be adjusted when the corresponding
signal source is selected. The way of adjusting is the same with that of trigger level.
To avoid the effect of signal noise, it is suggested that the comparative level should
be set in the waveform centre area to obtain the accurate captured result. Press
the CS POLARITY option button to set the positive or negative polarity of the chip
selection signal. The normal SPI communication uses the transmission signal with
negative polarity.
• SCLK SETTING: Set the Clock Signal
Use this function to enter the clock signal setting interface. Press the SCLK button
to switch any channel among H1-CH4 as clock source. The corresponding logic
level can be adjusted when the corresponding signal source is selected. The way of
adjusting is the same with that of trigger level. To avoid the effect of signal noise, it
is suggested that the comparative level should be set in the waveform centre area
to obtain the accurate captured result. Press the SCLK EDGE button to set the
clock source as rising edge or falling edge.
• MOSI SETTING: Set Master Output Slave Input Signal
Use this function and enter the MOSI signal setting interface. Press the MOSI
Source button to switch any channel among CH1-CH4 as data source. If MOSI is
off, there will be no corresponding data in decoded display. The corresponding logic
level can be adjusted when the corresponding signal source is selected. To avoid
the effect of signal noise, it is suggested that the comparative level should be set
in the waveform centre area to obtain accurate captured result. Press the MOSI
POLARITY button to set the positive or negative polarity of the chip selection signal.
The normal SPI communication uses the transmission signal with negative polarity.
• CONDITION: Select the Trigger Condition
Use this function to switch the trigger condition between CS, Idle, CS&Data, and
Idle&Data. CS will trigger when chip selection enable is effective. Idle is idle trigger.
CS&Data will trigger when enable is effective and the data is correct. Idle&Data will
trigger when it is idle and the data is correct.

Condition Setting

• BIT ORDER: Set the bit order to MSB/LSB
• DATA SETTING: Set the comparative values
• BIT WIDTH: Set the data bit width need to be compared. The range is 4-32 bits
• BIT: Select the bit. The Multi-purpose control can select bit under the data setting
interface when a certain bit is needed to be set. The present selected bit will be
highlighted red at the left corner. Note that the bit you can select is directly related
to the byte you set. For example, if 1 byte is selected, the bit you can select is 0-7.
• DATA BIT: Set every data. The present bit can be set to H/L as required. The
present data setting status will be displayed at the left corner of the screen. The set
value display by the method of hexadecimal and MSB.
• ALL BITS SET: the all bits to the same value, which is helpful for you to set and
reset quickly.
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