Do you have a monitoring device for SPI bus?
It is possible by using LE-3500(v1.03 or later) with OP-SB5GL (option), or by using LE-8200A/LE-8200 with OP-SB85L (option).
LE-2500 with OP-SB5GL can monitor SPI by BURST mode. However, LE-2500 does not support CS(SS signal), it monitors all communications data of SPI bus. (Cannot monitor for selected communcation data.)