IWR1843: What's the max sample rate of IWR1843

Hi,

What's the max sample rate of IWR1843. It states "The maximum ADC sampling frequency in the TI’s radar devices is 37.5 MHz (AWR1xxx)". However, when I set the digOutSampleRate to 15000 in the configuration file, the program terminates with error "Error: mmWave Start failed [mmWave Error: -3101 Subsys: 0] {module#9}: "../mss_main.c", line 3219: error {id:0x10000, args:[0x1a0bc, 0x1a0bc]}".

Thanks.