ADIS16497 does not output data during burst read

I try to read data from the ADIS16497 using burst read. But I don't get any data. The IMU should output a BURST_ID (0xA5A5) in segment 1. I don't even get that (see file burst_read.png).

If I read the PROD_ID I get the correct product id value 0x4071. So I know that the SPI works (see file ID_read.png).

The serial clock is set to 2.8125 MBit/s.