Sailor RE2100 Technical Manual page 75

3 SERVICE RE2100
Check of SPI Data
Connect an oscilloscope channel A to U10 pin 4 and channel B to U10 pin 10. Set TB=50 uS. Control that
the two wave forms are the same. The voltage is 5Vpp +/-0.5V.
Check of SPI Clock
Connect an oscilloscope channel A to U10 pin 2 and channel B to U10 pin 12. Set TB=50 uS. Control that
the two wave forms are the same. The voltage is 5Vpp +/-0.5V. The clock period is 26 uS.
Check of Timing Between SPI Data and Clock
Connect an oscilloscope channel A to U10 pin 2
and channel B to U10 pin 4. Set TB=5 uS and
control the data set-up time as shown below.
Check of SPI Address Select
Connect an oscilloscope channel A to U09 pin 2.
Set TB=5uS and control the wave form as shown
below. Control the same wave form on U09 pin
3,4,5,6,7,8 and 16.
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